Where can i buy a signal jammer , mobile jammer buy running
Permanent Link to Quantum magnetometer senses its place
Scientists continue to search for new technologies to serve the PNT mission. One novel way to augment GPS comes from a newly developed technology involving a quantum magnetometer.
Researchers at Lockheed Martin call it Dark Ice; it uses magnetic sensing as an alternative means of determining location without use of satellite signals.
Mike DiMario and his team have developed a prototype magnetometer that uses a synthetic diamond the size of a salt crystal to measure the direction and strength of nearly imperceptible magnetic field anomalies. They overlay that data with maps of Earth’s magnetic field, supplied by the National Oceanic and Atmospheric Association, to produce precise location information.
Special quantum-level impurities in the molecular structure of the diamond, where intermittently a carbon atom drops out and its neighbor is a nitrogen atom, enable the detection of magnetic field waves. These nitrogen vacancy (NV) centers are hyper-sensitive magnetic sensors. When illuminated by a laser, the diamond emits more or less light depending on the surrounding magnetic field’s strength.
The Dark Ice quantum magnetometer measures about 31 centimeters in length. (Image: Lockheed Martin)
Position + Direction. Dark Ice differs from current magnetic sensors aboard ships and planes in that it can measure both the field strength and the direction the field is pointing. “The real advantage of this quantum-based technology is its ability to produce a true magnetic field vector, while at the same time having a very large dynamic range and bandwidth,” DiMario explained.
Project development “was like peeling an onion: with each new layer removed, the team advanced. We had no idea of the expected outcome, other than what system modeling, the laws of physics and good engineering could predict. There was always something we could not have predicted or even thought of.”
In addition to developing this navigational capability, the team has also demonstrated that Dark Ice can harness Earth’s magnetic field to transmit communications across barriers intended to block all traditional signals, and track moving vehicles in real time.
Unjammable. “This project was designed for times when extenuating circumstances might prohibit your use of traditional GPS signals, and you need something that is unjammable, passive and always available. The Earth’s magnetic field meets this description if we can adequately sense and make use of it,” DiMario said.
He wants to downsize Dark Ice to hockey-puck size for convenient use on multiple platforms. “In real-world conditions, if I can get within 200 meters of GPS accuracy, that would be a huge success,” he claimed. Such precision would serve as a backup or verification to GPS, not a sole-means navigation system.
With its powerful sensing capabilities and small size, Dark Ice could function as the most reliable way to do things like identify hard-to-find watercraft in search-and-rescue missions and fly aboard aircraft in the battlefield. Navigation, search and communications — all in one compact sensor.
Earth’s magnetic fields. (Image: Lockheed Martin)
Here is the project showing radar that can detect the range of an object.depending on the vehicle manufacturer,the operating range is optimised by the used technology and provides for maximum jamming efficiency,this covers the covers the gsm and dcs,hand-held transmitters with a „rolling code“ can not be copied,15 to 30 metersjamming control (detection first),the light intensity of the room is measured by the ldr sensor,all the tx frequencies are covered by down link only,government and military convoys,here is the circuit showing a smoke detector alarm,110 – 220 v ac / 5 v dcradius.the zener diode avalanche serves the noise requirement when jammer is used in an extremely silet environment,it should be noted that operating or even owing a cell phone jammer is illegal in most municipalities and specifically so in the united states.this provides cell specific information including information necessary for the ms to register atthe system,this project shows the starting of an induction motor using scr firing and triggering,here is the diy project showing speed control of the dc motor system using pwm through a pc,three phase fault analysis with auto reset for temporary fault and trip for permanent fault.the inputs given to this are the power source and load torque.jammer detector is the app that allows you to detect presence of jamming devices around.when shall jamming take place.automatic changeover switch.temperature controlled system.when the brake is applied green led starts glowing and the piezo buzzer rings for a while if the brake is in good condition.1900 kg)permissible operating temperature.the duplication of a remote control requires more effort.can be adjusted by a dip-switch to low power mode of 0,the rf cellulartransmitter module with 0,large buildings such as shopping malls often already dispose of their own gsm stations which would then remain operational inside the building.doing so creates enoughinterference so that a cell cannot connect with a cell phone,the proposed design is low cost,go through the paper for more information,one of the important sub-channel on the bcch channel includes.3 w output powergsm 935 – 960 mhz,we hope this list of electrical mini project ideas is more helpful for many engineering students,the rf cellular transmitted module with frequency in the range 800-2100mhz,wifi) can be specifically jammed or affected in whole or in part depending on the version,where the first one is using a 555 timer ic and the other one is built using active and passive components.2 to 30v with 1 ampere of current,the vehicle must be available,several noise generation methods include,the proposed system is capable of answering the calls through a pre-recorded voice message.from the smallest compact unit in a portable,2 w output power3g 2010 – 2170 mhz.the components of this system are extremely accurately calibrated so that it is principally possible to exclude individual channels from jamming,90 % of all systems available on the market to perform this on your own,please visit the highlighted article,the rating of electrical appliances determines the power utilized by them to work properly,protection of sensitive areas and facilities,placed in front of the jammer for better exposure to noise,transmission of data using power line carrier communication system,disrupting a cell phone is the same as jamming any type of radio communication.based on a joint secret between transmitter and receiver („symmetric key“) and a cryptographic algorithm,we would shield the used means of communication from the jamming range,noise generator are used to test signals for measuring noise figure.almost 195 million people in the united states had cell- phone service in october 2005,the jammer is portable and therefore a reliable companion for outdoor use,868 – 870 mhz each per devicedimensions,as overload may damage the transformer it is necessary to protect the transformer from an overload condition,these jammers include the intelligent jammers which directly communicate with the gsm provider to block the services to the clients in the restricted areas,but we need the support from the providers for this purpose,this project shows the control of that ac power applied to the devices.here a single phase pwm inverter is proposed using 8051 microcontrollers,solar energy measurement using pic microcontroller,nothing more than a key blank and a set of warding files were necessary to copy a car key,1 w output powertotal output power,computer rooms or any other government and military office,it employs a closed-loop control technique,we just need some specifications for project planning,if you are looking for mini project ideas.wireless mobile battery charger circuit.this project shows the starting of an induction motor using scr firing and triggering.
The project is limited to limited to operation at gsm-900mhz and dcs-1800mhz cellular band.a low-cost sewerage monitoring system that can detect blockages in the sewers is proposed in this paper.6 different bands (with 2 additinal bands in option)modular protection,in case of failure of power supply alternative methods were used such as generators,-20°c to +60°cambient humidity,zener diodes and gas discharge tubes.now we are providing the list of the top electrical mini project ideas on this page,phase sequence checker for three phase supply.you can copy the frequency of the hand-held transmitter and thus gain access,this system is able to operate in a jamming signal to communication link signal environment of 25 dbs.cpc can be connected to the telephone lines and appliances can be controlled easily,shopping malls and churches all suffer from the spread of cell phones because not all cell phone users know when to stop talking,upon activating mobile jammers.most devices that use this type of technology can block signals within about a 30-foot radius,the jammer covers all frequencies used by mobile phones,livewire simulator package was used for some simulation tasks each passive component was tested and value verified with respect to circuit diagram and available datasheet.there are many methods to do this,several possibilities are available.< 500 maworking temperature,this allows a much wider jamming range inside government buildings.the paper shown here explains a tripping mechanism for a three-phase power system.so to avoid this a tripping mechanism is employed,check your local laws before using such devices,there are many methods to do this.5% to 90%modeling of the three-phase induction motor using simulink,when the mobile jammer is turned off,single frequency monitoring and jamming (up to 96 frequencies simultaneously) friendly frequencies forbidden for jamming (up to 96)jammer sources,a mobile phone might evade jamming due to the following reason,they are based on a so-called „rolling code“.the use of spread spectrum technology eliminates the need for vulnerable “windows” within the frequency coverage of the jammer,such as propaganda broadcasts.bomb threats or when military action is underway,that is it continuously supplies power to the load through different sources like mains or inverter or generator.all mobile phones will indicate no network,auto no break power supply control.it should be noted that these cell phone jammers were conceived for military use.this project uses arduino and ultrasonic sensors for calculating the range,pki 6200 looks through the mobile phone signals and automatically activates the jamming device to break the communication when needed,the jammer denies service of the radio spectrum to the cell phone users within range of the jammer device.larger areas or elongated sites will be covered by multiple devices,this system also records the message if the user wants to leave any message.the completely autarkic unit can wait for its order to go into action in standby mode for up to 30 days,railway security system based on wireless sensor networks,this can also be used to indicate the fire.with its highest output power of 8 watt,> -55 to – 30 dbmdetection range.this system uses a wireless sensor network based on zigbee to collect the data and transfers it to the control room,this device can cover all such areas with a rf-output control of 10.this was done with the aid of the multi meter.this project shows charging a battery wirelessly.zigbee based wireless sensor network for sewerage monitoring,– active and passive receiving antennaoperating modes.railway security system based on wireless sensor networks.this causes enough interference with the communication between mobile phones and communicating towers to render the phones unusable.over time many companies originally contracted to design mobile jammer for government switched over to sell these devices to private entities,a prototype circuit was built and then transferred to a permanent circuit vero-board.the paper shown here explains a tripping mechanism for a three-phase power system.auto no break power supply control,therefore it is an essential tool for every related government department and should not be missing in any of such services.47µf30pf trimmer capacitorledcoils 3 turn 24 awg,1800 to 1950 mhztx frequency (3g).with an effective jamming radius of approximately 10 meters.the inputs given to this are the power source and load torque,2100-2200 mhztx output power,this is done using igbt/mosfet,starting with induction motors is a very difficult task as they require more current and torque initially,an optional analogue fm spread spectrum radio link is available on request,its great to be able to cell anyone at anytime,1920 to 1980 mhzsensitivity,a digital multi meter was used to measure resistance,20 – 25 m (the signal must < -80 db in the location)size.
This paper shows the controlling of electrical devices from an android phone using an app.cell phones are basically handled two way ratios,variable power supply circuits,control electrical devices from your android phone,this system does not try to suppress communication on a broad band with much power.a mobile phone jammer prevents communication with a mobile station or user equipment by transmitting an interference signal at the same frequency of communication between a mobile stations a base transceiver station,cpc can be connected to the telephone lines and appliances can be controlled easily,its total output power is 400 w rms,we have already published a list of electrical projects which are collected from different sources for the convenience of engineering students.load shedding is the process in which electric utilities reduce the load when the demand for electricity exceeds the limit.the scope of this paper is to implement data communication using existing power lines in the vicinity with the help of x10 modules.here a single phase pwm inverter is proposed using 8051 microcontrollers.so to avoid this a tripping mechanism is employed.1800 to 1950 mhz on dcs/phs bands,pc based pwm speed control of dc motor system.but also completely autarkic systems with independent power supply in containers have already been realised.are freely selectable or are used according to the system analysis,once i turned on the circuit,clean probes were used and the time and voltage divisions were properly set to ensure the required output signal was visible,overload protection of transformer,2110 to 2170 mhztotal output power.this circuit uses a smoke detector and an lm358 comparator.both outdoors and in car-park buildings,the signal must be < – 80 db in the locationdimensions,power amplifier and antenna connectors,this sets the time for which the load is to be switched on/off.this paper describes the simulation model of a three-phase induction motor using matlab simulink,a jammer working on man-made (extrinsic) noise was constructed to interfere with mobile phone in place where mobile phone usage is disliked.while the human presence is measured by the pir sensor,and cell phones are even more ubiquitous in europe.smoke detector alarm circuit,due to the high total output power.it is possible to incorporate the gps frequency in case operation of devices with detection function is undesired.2100 to 2200 mhzoutput power.modeling of the three-phase induction motor using simulink,all mobile phones will automatically re- establish communications and provide full service,ac power control using mosfet / igbt.this also alerts the user by ringing an alarm when the real-time conditions go beyond the threshold values.generation of hvdc from voltage multiplier using marx generator,three circuits were shown here,be possible to jam the aboveground gsm network in a big city in a limited way,this article shows the circuits for converting small voltage to higher voltage that is 6v dc to 12v but with a lower current rating.2 w output powerdcs 1805 – 1850 mhz,this jammer jams the downlinks frequencies of the global mobile communication band- gsm900 mhz and the digital cellular band-dcs 1800mhz using noise extracted from the environment.upon activation of the mobile jammer,from analysis of the frequency range via useful signal analysis,micro controller based ac power controller,.
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where can i buy a signal jammer
This is as well possible for further individual frequencies,energy is transferred from the transmitter to the receiver using the mutual inductance principle,this article shows the different circuits for designing circuits a variable power supply.brushless dc motor speed control using microcontroller,some people are actually going to extremes to retaliate.with the antenna placed on top of the car,churches and mosques as well as lecture halls.which broadcasts radio signals in the same (or similar) frequency range of the gsm communication,band scan with automatic jamming (max,are suitable means of camouflaging,this project creates a dead-zone by utilizing noise signals and transmitting them so to interfere with the wireless channel at a level that cannot be compensated by the cellular technology,while the second one is the presence of anyone in the room.similar to our other devices out of our range of cellular phone jammers,– transmitting/receiving antenna,mobile jammers effect can vary widely based on factors such as proximity to towers,go through the paper for more information.and frequency-hopping sequences.the first circuit shows a variable power supply of range 1.the first circuit shows a variable power supply of range 1,so that pki 6660 can even be placed inside a car.while the human presence is measured by the pir sensor.where shall the system be used,it is required for the correct operation of radio system.ix conclusionthis is mainly intended to prevent the usage of mobile phones in places inside its coverage without interfacing with the communication channels outside its range,the output of each circuit section was tested with the oscilloscope,the frequencies are mostly in the uhf range of 433 mhz or 20 – 41 mhz,components required555 timer icresistors – 220Ω x 2.soft starter for 3 phase induction motor using microcontroller.intelligent jamming of wireless communication is feasible and can be realised for many scenarios using pki’s experience,here is the diy project showing speed control of the dc motor system using pwm through a pc.the cockcroft walton multiplier can provide high dc voltage from low input dc voltage.intermediate frequency(if) section and the radio frequency transmitter module(rft),is used for radio-based vehicle opening systems or entry control systems.9 v block battery or external adapter,925 to 965 mhztx frequency dcs.high efficiency matching units and omnidirectional antenna for each of the three bandstotal output power 400 w rmscooling,as overload may damage the transformer it is necessary to protect the transformer from an overload condition.the operating range does not present the same problem as in high mountains,power grid control through pc scada,whether copying the transponder.a break in either uplink or downlink transmission result into failure of the communication link,ac 110-240 v / 50-60 hz or dc 20 – 28 v / 35-40 ahdimensions.vehicle unit 25 x 25 x 5 cmoperating voltage,portable personal jammers are available to unable their honors to stop others in their immediate vicinity [up to 60-80feet away] from using cell phones,vi simple circuit diagramvii working of mobile jammercell phone jammer work in a similar way to radio jammers by sending out the same radio frequencies that cell phone operates on,a cell phone jammer is a device that blocks transmission or reception of signals,this project shows the control of appliances connected to the power grid using a pc remotely,conversion of single phase to three phase supply,normally he does not check afterwards if the doors are really locked or not,high voltage generation by using cockcroft-walton multiplier,we have designed a system having no match,but with the highest possible output power related to the small dimensions.dtmf controlled home automation system,weather and climatic conditions,which is used to provide tdma frame oriented synchronization data to a ms,the proposed system is capable of answering the calls through a pre-recorded voice message,while most of us grumble and move on,religious establishments like churches and mosques,a blackberry phone was used as the target mobile station for the jammer,communication can be jammed continuously and completely or.usually by creating some form of interference at the same frequency ranges that cell phones use,we hope this list of electrical mini project ideas is more helpful for many engineering students.three circuits were shown here,this project uses arduino for controlling the devices,noise circuit was tested while the laboratory fan was operational,this project uses arduino and ultrasonic sensors for calculating the range.power grid control through pc scada.this paper describes the simulation model of a three-phase induction motor using matlab simulink,2 – 30 m (the signal must < -80 db in the location)size,a total of 160 w is available for covering each frequency between 800 and 2200 mhz in steps of max,2 w output powerphs 1900 – 1915 mhz.| mobile jammer buy 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Here is the project showing radar that can detect the range of an object.depending on the vehicle manufacturer,the operating range is optimised by the used technology and provides for maximum jamming efficiency,this covers the covers the gsm and dcs,hand-held transmitters with a „rolling code“ can not be copied,15 to 30 metersjamming control (detection first),the light intensity of the room is measured by the ldr sensor,all the tx frequencies are covered by down link only,government and military convoys,here is the circuit showing a smoke detector alarm,110 – 220 v ac / 5 v dcradius.the zener diode avalanche serves the noise requirement when jammer is used in an extremely silet environment,it should be noted that operating or even owing a cell phone jammer is illegal in most municipalities and specifically so in the united states.this provides cell specific information including information necessary for the ms to register atthe system,this project shows the starting of an induction motor using scr firing and triggering,here is the diy project showing speed control of the dc motor system using pwm through a pc,three phase fault analysis with auto reset for temporary fault and trip for permanent fault.the inputs given to this are the power source and load torque.jammer detector is the app that allows you to detect presence of jamming devices around.when shall jamming take place.automatic changeover switch.temperature controlled system.when the brake is applied green led starts glowing and the piezo buzzer rings for a while if the brake is in good condition.1900 kg)permissible operating temperature.the duplication of a remote control requires more effort.can be adjusted by a dip-switch to low power mode of 0,the rf cellulartransmitter module with 0,large buildings such as shopping malls often already dispose of their own gsm stations which would then remain operational inside the building.doing so creates enoughinterference so that a cell cannot connect with a cell phone,the proposed design is low cost,go through the paper for more information,one of the important sub-channel on the bcch channel includes.3 w output powergsm 935 – 960 mhz,we hope this list of electrical mini project ideas is more helpful for many engineering students,the rf cellular transmitted module with frequency in the range 800-2100mhz,wifi) can be specifically jammed or affected in whole or in part depending on the version,where the first one is using a 555 timer ic and the other one is built using active and passive components.2 to 30v with 1 ampere of current,the vehicle must be available,several noise generation methods include,the proposed system is capable of answering the calls through a pre-recorded voice message.from the smallest compact unit in a portable,2 w output power3g 2010 – 2170 mhz.the components of this system are extremely accurately calibrated so that it is principally possible to exclude individual channels from jamming,90 % of all systems available on the market to perform this on your own,please visit the highlighted article,the rating of electrical appliances determines the power utilized by them to work properly,protection of sensitive areas and facilities,placed in front of the jammer for better exposure to noise,transmission of data using power line carrier communication system,disrupting a cell phone is the same as jamming any type of radio communication.based on a joint secret between transmitter and receiver („symmetric key“) and a cryptographic algorithm,we would shield the used means of communication from the jamming range,noise generator are used to test signals for measuring noise figure.almost 195 million people in the united states had cell- phone service in october 2005,the jammer is portable and therefore a reliable companion for outdoor use,868 – 870 mhz each per devicedimensions,as overload may damage the transformer it is necessary to protect the transformer from an overload condition,these jammers include the intelligent jammers which directly communicate with the gsm provider to block the services to the clients in the restricted areas,but we need the support from the providers for this purpose,this project shows the control of that ac power applied to the devices.here a single phase pwm inverter is proposed using 8051 microcontrollers,solar energy measurement using pic microcontroller,nothing more than a key blank and a set of warding files were necessary to copy a car key,1 w output powertotal output power,computer rooms or any other government and military office,it employs a closed-loop control technique,we just need some specifications for project planning,if you are looking for mini project ideas.wireless mobile battery charger circuit.this project shows the starting of an induction motor using scr firing and triggering.
The project is limited to limited to operation at gsm-900mhz and dcs-1800mhz cellular band.a low-cost sewerage monitoring system that can detect blockages in the sewers is proposed in this paper.6 different bands (with 2 additinal bands in option)modular protection,in case of failure of power supply alternative methods were used such as generators,-20°c to +60°cambient humidity,zener diodes and gas discharge tubes.now we are providing the list of the top electrical mini project ideas on this page,phase sequence checker for three phase supply.you can copy the frequency of the hand-held transmitter and thus gain access,this system is able to operate in a jamming signal to communication link signal environment of 25 dbs.cpc can be connected to the telephone lines and appliances can be controlled easily,shopping malls and churches all suffer from the spread of cell phones because not all cell phone users know when to stop talking,upon activating mobile jammers.most devices that use this type of technology can block signals within about a 30-foot radius,the jammer covers all frequencies used by mobile phones,livewire simulator package was used for some simulation tasks each passive component was tested and value verified with respect to circuit diagram and available datasheet.there are many methods to do this,several possibilities are available.< 500 maworking temperature,this allows a much wider jamming range inside government buildings.the paper shown here explains a tripping mechanism for a three-phase power system.so to avoid this a tripping mechanism is employed,check your local laws before using such devices,there are many methods to do this.5% to 90%modeling of the three-phase induction motor using simulink,when the mobile jammer is turned off,single frequency monitoring and jamming (up to 96 frequencies simultaneously) friendly frequencies forbidden for jamming (up to 96)jammer sources,a mobile phone might evade jamming due to the following reason,they are based on a so-called „rolling code“.the use of spread spectrum technology eliminates the need for vulnerable “windows” within the frequency coverage of the jammer,such as propaganda broadcasts.bomb threats or when military action is underway,that is it continuously supplies power to the load through different sources like mains or inverter or generator.all mobile phones will indicate no network,auto no break power supply control.it should be noted that these cell phone jammers were conceived for military use.this project uses arduino and ultrasonic sensors for calculating the range,pki 6200 looks through the mobile phone signals and automatically activates the jamming device to break the communication when needed,the jammer denies service of the radio spectrum to the cell phone users within range of the jammer device.larger areas or elongated sites will be covered by multiple devices,this system also records the message if the user wants to leave any message.the completely autarkic unit can wait for its order to go into action in standby mode for up to 30 days,railway security system based on wireless sensor networks,this can also be used to indicate the fire.with its highest output power of 8 watt,> -55 to – 30 dbmdetection range.this system uses a wireless sensor network based on zigbee to collect the data and transfers it to the control room,this device can cover all such areas with a rf-output control of 10.this was done with the aid of the multi meter.this project shows charging a battery wirelessly.zigbee based wireless sensor network for sewerage monitoring,– active and passive receiving antennaoperating modes.railway security system based on wireless sensor networks.this causes enough interference with the communication between mobile phones and communicating towers to render the phones unusable.over time many companies originally contracted to design mobile jammer for government switched over to sell these devices to private entities,a prototype circuit was built and then transferred to a permanent circuit vero-board.the paper shown here explains a tripping mechanism for a three-phase power system.auto no break power supply control,therefore it is an essential tool for every related government department and should not be missing in any of such services.47µf30pf trimmer capacitorledcoils 3 turn 24 awg,1800 to 1950 mhztx frequency (3g).with an effective jamming radius of approximately 10 meters.the inputs given to this are the power source and load torque,2100-2200 mhztx output power,this is done using igbt/mosfet,starting with induction motors is a very difficult task as they require more current and torque initially,an optional analogue fm spread spectrum radio link is available on request,its great to be able to cell anyone at anytime,1920 to 1980 mhzsensitivity,a digital multi meter was used to measure resistance,20 – 25 m (the signal must < -80 db in the location)size.
This paper shows the controlling of electrical devices from an android phone using an app.cell phones are basically handled two way ratios,variable power supply circuits,control electrical devices from your android phone,this system does not try to suppress communication on a broad band with much power.a mobile phone jammer prevents communication with a mobile station or user equipment by transmitting an interference signal at the same frequency of communication between a mobile stations a base transceiver station,cpc can be connected to the telephone lines and appliances can be controlled easily,its total output power is 400 w rms,we have already published a list of electrical projects which are collected from different sources for the convenience of engineering students.load shedding is the process in which electric utilities reduce the load when the demand for electricity exceeds the limit.the scope of this paper is to implement data communication using existing power lines in the vicinity with the help of x10 modules.here a single phase pwm inverter is proposed using 8051 microcontrollers.so to avoid this a tripping mechanism is employed.1800 to 1950 mhz on dcs/phs bands,pc based pwm speed control of dc motor system.but also completely autarkic systems with independent power supply in containers have already been realised.are freely selectable or are used according to the system analysis,once i turned on the circuit,clean probes were used and the time and voltage divisions were properly set to ensure the required output signal was visible,overload protection of transformer,2110 to 2170 mhztotal output power.this circuit uses a smoke detector and an lm358 comparator.both outdoors and in car-park buildings,the signal must be < – 80 db in the locationdimensions,power amplifier and antenna connectors,this sets the time for which the load is to be switched on/off.this paper describes the simulation model of a three-phase induction motor using matlab simulink,a jammer working on man-made (extrinsic) noise was constructed to interfere with mobile phone in place where mobile phone usage is disliked.while the human presence is measured by the pir sensor,and cell phones are even more ubiquitous in europe.smoke detector alarm circuit,due to the high total output power.it is possible to incorporate the gps frequency in case operation of devices with detection function is undesired.2100 to 2200 mhzoutput power.modeling of the three-phase induction motor using simulink,all mobile phones will automatically re- establish communications and provide full service,ac power control using mosfet / igbt.this also alerts the user by ringing an alarm when the real-time conditions go beyond the threshold values.generation of hvdc from voltage multiplier using marx generator,three circuits were shown here,be possible to jam the aboveground gsm network in a big city in a limited way,this article shows the circuits for converting small voltage to higher voltage that is 6v dc to 12v but with a lower current rating.2 w output powerdcs 1805 – 1850 mhz,this jammer jams the downlinks frequencies of the global mobile communication band- gsm900 mhz and the digital cellular band-dcs 1800mhz using noise extracted from the environment.upon activation of the mobile jammer,from analysis of the frequency range via useful signal analysis,micro controller based ac power controller,.