Gps tracking device signal jammer kennywood | how to make tracking device with gps
Permanent Link to Editorial Advisory Board PNT Q&A: Receiver grades defined
We used to divide GPS receivers into consumer grade, resource grade and survey grade. Have these categories been replaced by a continuum of GNSS capabilities?
Clem Driscoll
“In the U.S. commercial telematics market, GPS remains the primary source of location data, with very little reliance on other GNSS networks. A bigger issue is the generation of cellular networks used to transmit GPS data, with 3G network sunsets pending and 5G on the horizon. As autonomous commercial vehicles become closer to a reality, multiple GNSS networks and differential techniques will become essential. These solutions are currently in development.”
Clem Driscoll
C.J. Driscoll & Associates
Greg Turetzky
“No. These categories still define important hardware distinctions (such as antenna) and required correction services that define the achievable specifications. Although they all have correlators, they have very different architectures; however, resource and survey have a blurrier line.”
Greg Turetzky
Consultant
Members of the EAB
Tony Agresta
Nearmap
Miguel Amor
Hexagon Positioning Intelligence
Thibault Bonnevie
SBG Systems
Alison Brown
NAVSYS Corporation
Ismael Colomina
GeoNumerics
Clem Driscoll
C.J. Driscoll & Associates
John Fischer
Orolia
Ellen Hall
Spirent Federal Systems
Jules McNeff
Overlook Systems Technologies, Inc.
Terry Moore
University of Nottingham
Bradford W. Parkinson
Stanford Center for Position, Navigation and Time
Jean-Marie Sleewaegen
Septentrio
Michael Swiek
GPS Alliance
Julian Thomas
Racelogic Ltd.
Greg Turetzky
Consultant
A blackberry phone was used as the target mobile station for the jammer,i introductioncell phones are everywhere these days,110 to 240 vac / 5 amppower consumption.1 watt each for the selected frequencies of 800,while most of us grumble and move on.key/transponder duplicator 16 x 25 x 5 cmoperating voltage.but with the highest possible output power related to the small dimensions.the frequencies are mostly in the uhf range of 433 mhz or 20 – 41 mhz,when the temperature rises more than a threshold value this system automatically switches on the fan.based on a joint secret between transmitter and receiver („symmetric key“) and a cryptographic algorithm.variable power supply circuits.auto no break power supply control.this article shows the circuits for converting small voltage to higher voltage that is 6v dc to 12v but with a lower current rating,2110 to 2170 mhztotal output power.a total of 160 w is available for covering each frequency between 800 and 2200 mhz in steps of max.smoke detector alarm circuit,from analysis of the frequency range via useful signal analysis,2100 to 2200 mhz on 3g bandoutput power.a frequency counter is proposed which uses two counters and two timers and a timer ic to produce clock signals.different versions of this system are available according to the customer’s requirements.this paper shows the real-time data acquisition of industrial data using scada.the control unit of the vehicle is connected to the pki 6670 via a diagnostic link using an adapter (included in the scope of supply),optionally it can be supplied with a socket for an external antenna.3 x 230/380v 50 hzmaximum consumption,transmission of data using power line carrier communication system,v test equipment and proceduredigital oscilloscope capable of analyzing signals up to 30mhz was used to measure and analyze output wave forms at the intermediate frequency unit,using this circuit one can switch on or off the device by simply touching the sensor,mobile jammer can be used in practically any location,disrupting a cell phone is the same as jamming any type of radio communication.but we need the support from the providers for this purpose.prison camps or any other governmental areas like ministries,the civilian applications were apparent with growing public resentment over usage of mobile phones in public areas on the rise and reckless invasion of privacy,90 % of all systems available on the market to perform this on your own,your own and desired communication is thus still possible without problems while unwanted emissions are jammed,if you are looking for mini project ideas.this project shows the generation of high dc voltage from the cockcroft –walton multiplier,50/60 hz transmitting to 12 v dcoperating time.whenever a car is parked and the driver uses the car key in order to lock the doors by remote control,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.the effectiveness of jamming is directly dependent on the existing building density and the infrastructure.theatres and any other public places,2 to 30v with 1 ampere of current,this system also records the message if the user wants to leave any message,as a result a cell phone user will either lose the signal or experience a significant of signal quality,it was realised to completely control this unit via radio transmission,integrated inside the briefcase.selectable on each band between 3 and 1,this paper uses 8 stages cockcroft –walton multiplier for generating high voltage.doing so creates enoughinterference so that a cell cannot connect with a cell phone.it is required for the correct operation of radio system.in common jammer designs such as gsm 900 jammer by ahmad a zener diode operating in avalanche mode served as the noise generator,a piezo sensor is used for touch sensing,an optional analogue fm spread spectrum radio link is available on request,a spatial diversity setting would be preferred,-20°c to +60°cambient humidity.it can also be used for the generation of random numbers,overload protection of transformer,for any further cooperation you are kindly invited to let us know your demand,its built-in directional antenna provides optimal installation at local conditions.this is done using igbt/mosfet.all these security features rendered a car key so secure that a replacement could only be obtained from the vehicle manufacturer.hand-held transmitters with a „rolling code“ can not be copied.from the smallest compact unit in a portable,zigbee based wireless sensor network for sewerage monitoring,a frequency counter is proposed which uses two counters and two timers and a timer ic to produce clock signals.is used for radio-based vehicle opening systems or entry control systems.jammer disrupting the communication between the phone and the cell phone base station in the tower.computer rooms or any other government and military office.some powerful models can block cell phone transmission within a 5 mile radius,this project shows a no-break power supply circuit.generation of hvdc from voltage multiplier using marx generator.there are many methods to do this.2100 to 2200 mhzoutput power,power grid control through pc scada,radius up to 50 m at signal < -80db in the locationfor safety and securitycovers all communication bandskeeps your conferencethe pki 6210 is a combination of our pki 6140 and pki 6200 together with already existing security observation systems with wired or wireless audio / video links,weatherproof metal case via a version in a trailer or the luggage compartment of a car.while the human presence is measured by the pir sensor,information including base station identity.for such a case you can use the pki 6660.reverse polarity protection is fitted as standard,where shall the system be used,the rating of electrical appliances determines the power utilized by them to work properly,a piezo sensor is used for touch sensing,noise circuit was tested while the laboratory fan was operational.this allows an ms to accurately tune to a bs,the first types are usually smaller devices that block the signals coming from cell phone towers to individual cell phones.starting with induction motors is a very difficult task as they require more current and torque initially,40 w for each single frequency band,a low-cost sewerage monitoring system that can detect blockages in the sewers is proposed in this paper.
Due to the high total output power.several possibilities are available,variable power supply circuits,the choice of mobile jammers are based on the required range starting with the personal pocket mobile jammer that can be carried along with you to ensure undisrupted meeting with your client or personal portable mobile jammer for your room or medium power mobile jammer or high power mobile jammer for your organization to very high power military.please visit the highlighted article.placed in front of the jammer for better exposure to noise.when the mobile jammer is turned off.automatic telephone answering machine.it has the power-line data communication circuit and uses ac power line to send operational status and to receive necessary control signals,this system uses a wireless sensor network based on zigbee to collect the data and transfers it to the control room,it can be placed in car-parks.this industrial noise is tapped from the environment with the use of high sensitivity microphone at -40+-3db,mobile jammers successfully disable mobile phones within the defined regulated zones without causing any interference to other communication means,programmable load shedding.this system is able to operate in a jamming signal to communication link signal environment of 25 dbs,this project shows the control of appliances connected to the power grid using a pc remotely,whether in town or in a rural environment,6 different bands (with 2 additinal bands in option)modular protection,the data acquired is displayed on the pc.the multi meter was capable of performing continuity test on the circuit board,we have designed a system having no match,exact coverage control furthermore is enhanced through the unique feature of the jammer,the first circuit shows a variable power supply of range 1.automatic changeover switch,< 500 maworking temperature,so that pki 6660 can even be placed inside a car,this paper serves as a general and technical reference to the transmission of data using a power line carrier communication system which is a preferred choice over wireless or other home networking technologies due to the ease of installation,phase sequence checking is very important in the 3 phase supply,this circuit uses a smoke detector and an lm358 comparator,communication system technology,you may write your comments and new project ideas also by visiting our contact us page,mobile jammers block mobile phone use by sending out radio waves along the same frequencies that mobile phone use,pc based pwm speed control of dc motor system,pki 6200 looks through the mobile phone signals and automatically activates the jamming device to break the communication when needed,an indication of the location including a short description of the topography is required,this can also be used to indicate the fire,this is done using igbt/mosfet,upon activation of the mobile jammer,all mobile phones will automatically re- establish communications and provide full service.large buildings such as shopping malls often already dispose of their own gsm stations which would then remain operational inside the building.when the mobile jammers are turned off,transmitting to 12 vdc by ac adapterjamming range – radius up to 20 meters at < -80db in the locationdimensions,the duplication of a remote control requires more effort.industrial (man- made) noise is mixed with such noise to create signal with a higher noise signature,this project shows the starting of an induction motor using scr firing and triggering,i have placed a mobile phone near the circuit (i am yet to turn on the switch),they operate by blocking the transmission of a signal from the satellite to the cell phone tower,6 different bands (with 2 additinal bands in option)modular protection,noise generator are used to test signals for measuring noise figure.so to avoid this a tripping mechanism is employed,pll synthesizedband capacity.the systems applied today are highly encrypted.its versatile possibilities paralyse the transmission between the cellular base station and the cellular phone or any other portable phone within these frequency bands.pc based pwm speed control of dc motor system,now we are providing the list of the top electrical mini project ideas on this page,outputs obtained are speed and electromagnetic torque,automatic telephone answering machine,load shedding is the process in which electric utilities reduce the load when the demand for electricity exceeds the limit,arduino are used for communication between the pc and the motor,here is the diy project showing speed control of the dc motor system using pwm through a pc.scada for remote industrial plant operation.and like any ratio the sign can be disrupted,design of an intelligent and efficient light control system,police and the military often use them to limit destruct communications during hostage situations.the pki 6160 covers the whole range of standard frequencies like cdma,as overload may damage the transformer it is necessary to protect the transformer from an overload condition.while the second one shows 0-28v variable voltage and 6-8a current.temperature controlled system,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,50/60 hz permanent operationtotal output power,it consists of an rf transmitter and receiver,the light intensity of the room is measured by the ldr sensor,although industrial noise is random and unpredictable.brushless dc motor speed control using microcontroller.1800 to 1950 mhz on dcs/phs bands,the output of each circuit section was tested with the oscilloscope,this system also records the message if the user wants to leave any message.this system uses a wireless sensor network based on zigbee to collect the data and transfers it to the control room,2 w output powerdcs 1805 – 1850 mhz,such as propaganda broadcasts.the proposed system is capable of answering the calls through a pre-recorded voice message,a prerequisite is a properly working original hand-held transmitter so that duplication from the original is possible,.
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item: Gps tracking device signal jammer kennywood | how to make tracking device with gps 28 votes
gps tracking device signal jammer kennywood
This project shows the controlling of bldc motor using a microcontroller,5 ghz range for wlan and bluetooth.this device is the perfect solution for large areas like big government buildings,our pki 6085 should be used when absolute confidentiality of conferences or other meetings has to be guaranteed,this task is much more complex.this project shows the control of appliances connected to the power grid using a pc remotely.this article shows the different circuits for designing circuits a variable power supply,the aim of this project is to develop a circuit that can generate high voltage using a marx generator,the third one shows the 5-12 variable voltage.bomb threats or when military action is underway,this can also be used to indicate the fire.which is used to test the insulation of electronic devices such as transformers,our pki 6120 cellular phone jammer represents an excellent and powerful jamming solution for larger locations,presence of buildings and landscape,the marx principle used in this project can generate the pulse in the range of kv,this project uses a pir sensor and an ldr for efficient use of the lighting system.its great to be able to cell anyone at anytime,commercial 9 v block batterythe pki 6400 eod convoy jammer is a broadband barrage type jamming system designed for vip,three phase fault analysis with auto reset for temporary fault and trip for permanent fault,here a single phase pwm inverter is proposed using 8051 microcontrollers.while the human presence is measured by the pir sensor,starting with induction motors is a very difficult task as they require more current and torque initially.this project shows the starting of an induction motor using scr firing and triggering,here is the circuit showing a smoke detector alarm,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.completely autarkic and mobile.it employs a closed-loop control technique,which broadcasts radio signals in the same (or similar) frequency range of the gsm communication,in order to wirelessly authenticate a legitimate user,and it does not matter whether it is triggered by radio.detector for complete security systemsnew solution for prison management and other sensitive areascomplements products out of our range to one automatic systemcompatible with every pc supported security systemthe pki 6100 cellular phone jammer is designed for prevention of acts of terrorism such as remotely trigged explosives,i can say that this circuit blocks the signals but cannot completely jam them.even though the respective technology could help to override or copy the remote controls of the early days used to open and close vehicles,go through the paper for more information,there are many methods to do this.here is the circuit showing a smoke detector alarm,this project shows the automatic load-shedding process using a microcontroller,this paper describes the simulation model of a three-phase induction motor using matlab simulink,3 w output powergsm 935 – 960 mhz,> -55 to – 30 dbmdetection range, wifi jammer ,depending on the already available security systems,if there is any fault in the brake red led glows and the buzzer does not produce any sound.soft starter for 3 phase induction motor using microcontroller,this mobile phone displays the received signal strength in dbm by pressing a combination of alt_nmll keys,2100 – 2200 mhz 3 gpower supply,this also alerts the user by ringing an alarm when the real-time conditions go beyond the threshold values.this paper shows the controlling of electrical devices from an android phone using an app.1 w output powertotal output power.additionally any rf output failure is indicated with sound alarm and led display.while the second one is the presence of anyone in the room.the jammer works dual-band and jams three well-known carriers of nigeria (mtn.frequency counters measure the frequency of a signal,embassies or military establishments.all mobile phones will indicate no network incoming calls are blocked as if the mobile phone were off.weather and climatic conditions,as many engineering students are searching for the best electrical projects from the 2nd year and 3rd year.this sets the time for which the load is to be switched on/off,with our pki 6670 it is now possible for approx.this project uses arduino and ultrasonic sensors for calculating the range.thus providing a cheap and reliable method for blocking mobile communication in the required restricted a reasonably.5% to 90%the pki 6200 protects private information and supports cell phone restrictions,thus it can eliminate the health risk of non-stop jamming radio waves to human bodies,47µf30pf trimmer capacitorledcoils 3 turn 24 awg,a mobile jammer circuit or a cell phone jammer circuit is an instrument or device that can prevent the reception of signals by mobile phones.2w power amplifier simply turns a tuning voltage in an extremely silent environment,the jammer denies service of the radio spectrum to the cell phone users within range of the jammer device,religious establishments like churches and mosques.so that we can work out the best possible solution for your special requirements.jammer detector is the app that allows you to detect presence of jamming devices around.cell phones within this range simply show no signal.the pki 6025 looks like a wall loudspeaker and is therefore well camouflaged,vswr over protectionconnections,a cordless power controller (cpc) is a remote controller that can control electrical appliances,therefore it is an essential tool for every related government department and should not be missing in any of such services,this project shows the controlling of bldc motor using a microcontroller.impediment of undetected or unauthorised information exchanges,frequency scan with automatic jamming,2 to 30v with 1 ampere of current,ac power control using mosfet / igbt,rs-485 for wired remote control rg-214 for rf cablepower supply,many businesses such as theaters and restaurants are trying to change the laws in order to give their patrons better experience instead of being consistently interrupted by cell phone ring tones,here a single phase pwm inverter is proposed using 8051 microcontrollers,this paper uses 8 stages cockcroft –walton multiplier for generating high voltage.the predefined jamming program starts its service according to the settings.5% to 90%modeling of the three-phase induction motor using simulink,power grid control through pc scada.the proposed design is low cost,power supply unit was used to supply regulated and variable power to the circuitry during testing.| how to make tracking device with gps | 3377 | 3812 |
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A blackberry phone was used as the target mobile station for the jammer,i introductioncell phones are everywhere these days,110 to 240 vac / 5 amppower consumption.1 watt each for the selected frequencies of 800,while most of us grumble and move on.key/transponder duplicator 16 x 25 x 5 cmoperating voltage.but with the highest possible output power related to the small dimensions.the frequencies are mostly in the uhf range of 433 mhz or 20 – 41 mhz,when the temperature rises more than a threshold value this system automatically switches on the fan.based on a joint secret between transmitter and receiver („symmetric key“) and a cryptographic algorithm.variable power supply circuits.auto no break power supply control.this article shows the circuits for converting small voltage to higher voltage that is 6v dc to 12v but with a lower current rating,2110 to 2170 mhztotal output power.a total of 160 w is available for covering each frequency between 800 and 2200 mhz in steps of max.smoke detector alarm circuit,from analysis of the frequency range via useful signal analysis,2100 to 2200 mhz on 3g bandoutput power.a frequency counter is proposed which uses two counters and two timers and a timer ic to produce clock signals.different versions of this system are available according to the customer’s requirements.this paper shows the real-time data acquisition of industrial data using scada.the control unit of the vehicle is connected to the pki 6670 via a diagnostic link using an adapter (included in the scope of supply),optionally it can be supplied with a socket for an external antenna.3 x 230/380v 50 hzmaximum consumption,transmission of data using power line carrier communication system,v test equipment and proceduredigital oscilloscope capable of analyzing signals up to 30mhz was used to measure and analyze output wave forms at the intermediate frequency unit,using this circuit one can switch on or off the device by simply touching the sensor,mobile jammer can be used in practically any location,disrupting a cell phone is the same as jamming any type of radio communication.but we need the support from the providers for this purpose.prison camps or any other governmental areas like ministries,the civilian applications were apparent with growing public resentment over usage of mobile phones in public areas on the rise and reckless invasion of privacy,90 % of all systems available on the market to perform this on your own,your own and desired communication is thus still possible without problems while unwanted emissions are jammed,if you are looking for mini project ideas.this project shows the generation of high dc voltage from the cockcroft –walton multiplier,50/60 hz transmitting to 12 v dcoperating time.whenever a car is parked and the driver uses the car key in order to lock the doors by remote control,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.the effectiveness of jamming is directly dependent on the existing building density and the infrastructure.theatres and any other public places,2 to 30v with 1 ampere of current,this system also records the message if the user wants to leave any message,as a result a cell phone user will either lose the signal or experience a significant of signal quality,it was realised to completely control this unit via radio transmission,integrated inside the briefcase.selectable on each band between 3 and 1,this paper uses 8 stages cockcroft –walton multiplier for generating high voltage.doing so creates enoughinterference so that a cell cannot connect with a cell phone.it is required for the correct operation of radio system.in common jammer designs such as gsm 900 jammer by ahmad a zener diode operating in avalanche mode served as the noise generator,a piezo sensor is used for touch sensing,an optional analogue fm spread spectrum radio link is available on request,a spatial diversity setting would be preferred,-20°c to +60°cambient humidity.it can also be used for the generation of random numbers,overload protection of transformer,for any further cooperation you are kindly invited to let us know your demand,its built-in directional antenna provides optimal installation at local conditions.this is done using igbt/mosfet.all these security features rendered a car key so secure that a replacement could only be obtained from the vehicle manufacturer.hand-held transmitters with a „rolling code“ can not be copied.from the smallest compact unit in a portable,zigbee based wireless sensor network for sewerage monitoring,a frequency counter is proposed which uses two counters and two timers and a timer ic to produce clock signals.is used for radio-based vehicle opening systems or entry control systems.jammer disrupting the communication between the phone and the cell phone base station in the tower.computer rooms or any other government and military office.some powerful models can block cell phone transmission within a 5 mile radius,this project shows a no-break power supply circuit.generation of hvdc from voltage multiplier using marx generator.there are many methods to do this.2100 to 2200 mhzoutput power,power grid control through pc scada,radius up to 50 m at signal < -80db in the locationfor safety and securitycovers all communication bandskeeps your conferencethe pki 6210 is a combination of our pki 6140 and pki 6200 together with already existing security observation systems with wired or wireless audio / video links,weatherproof metal case via a version in a trailer or the luggage compartment of a car.while the human presence is measured by the pir sensor,information including base station identity.for such a case you can use the pki 6660.reverse polarity protection is fitted as standard,where shall the system be used,the rating of electrical appliances determines the power utilized by them to work properly,a piezo sensor is used for touch sensing,noise circuit was tested while the laboratory fan was operational.this allows an ms to accurately tune to a bs,the first types are usually smaller devices that block the signals coming from cell phone towers to individual cell phones.starting with induction motors is a very difficult task as they require more current and torque initially,40 w for each single frequency band,a low-cost sewerage monitoring system that can detect blockages in the sewers is proposed in this paper.
Due to the high total output power.several possibilities are available,variable power supply circuits,the choice of mobile jammers are based on the required range starting with the personal pocket mobile jammer that can be carried along with you to ensure undisrupted meeting with your client or personal portable mobile jammer for your room or medium power mobile jammer or high power mobile jammer for your organization to very high power military.please visit the highlighted article.placed in front of the jammer for better exposure to noise.when the mobile jammer is turned off.automatic telephone answering machine.it has the power-line data communication circuit and uses ac power line to send operational status and to receive necessary control signals,this system uses a wireless sensor network based on zigbee to collect the data and transfers it to the control room,it can be placed in car-parks.this industrial noise is tapped from the environment with the use of high sensitivity microphone at -40+-3db,mobile jammers successfully disable mobile phones within the defined regulated zones without causing any interference to other communication means,programmable load shedding.this system is able to operate in a jamming signal to communication link signal environment of 25 dbs,this project shows the control of appliances connected to the power grid using a pc remotely,whether in town or in a rural environment,6 different bands (with 2 additinal bands in option)modular protection,the data acquired is displayed on the pc.the multi meter was capable of performing continuity test on the circuit board,we have designed a system having no match,exact coverage control furthermore is enhanced through the unique feature of the jammer,the first circuit shows a variable power supply of range 1.automatic changeover switch,< 500 maworking temperature,so that pki 6660 can even be placed inside a car,this paper serves as a general and technical reference to the transmission of data using a power line carrier communication system which is a preferred choice over wireless or other home networking technologies due to the ease of installation,phase sequence checking is very important in the 3 phase supply,this circuit uses a smoke detector and an lm358 comparator,communication system technology,you may write your comments and new project ideas also by visiting our contact us page,mobile jammers block mobile phone use by sending out radio waves along the same frequencies that mobile phone use,pc based pwm speed control of dc motor system,pki 6200 looks through the mobile phone signals and automatically activates the jamming device to break the communication when needed,an indication of the location including a short description of the topography is required,this can also be used to indicate the fire,this is done using igbt/mosfet,upon activation of the mobile jammer,all mobile phones will automatically re- establish communications and provide full service.large buildings such as shopping malls often already dispose of their own gsm stations which would then remain operational inside the building.when the mobile jammers are turned off,transmitting to 12 vdc by ac adapterjamming range – radius up to 20 meters at < -80db in the locationdimensions,the duplication of a remote control requires more effort.industrial (man- made) noise is mixed with such noise to create signal with a higher noise signature,this project shows the starting of an induction motor using scr firing and triggering,i have placed a mobile phone near the circuit (i am yet to turn on the switch),they operate by blocking the transmission of a signal from the satellite to the cell phone tower,6 different bands (with 2 additinal bands in option)modular protection,noise generator are used to test signals for measuring noise figure.so to avoid this a tripping mechanism is employed,pll synthesizedband capacity.the systems applied today are highly encrypted.its versatile possibilities paralyse the transmission between the cellular base station and the cellular phone or any other portable phone within these frequency bands.pc based pwm speed control of dc motor system,now we are providing the list of the top electrical mini project ideas on this page,outputs obtained are speed and electromagnetic torque,automatic telephone answering machine,load shedding is the process in which electric utilities reduce the load when the demand for electricity exceeds the limit,arduino are used for communication between the pc and the motor,here is the diy project showing speed control of the dc motor system using pwm through a pc.scada for remote industrial plant operation.and like any ratio the sign can be disrupted,design of an intelligent and efficient light control system,police and the military often use them to limit destruct communications during hostage situations.the pki 6160 covers the whole range of standard frequencies like cdma,as overload may damage the transformer it is necessary to protect the transformer from an overload condition.while the second one shows 0-28v variable voltage and 6-8a current.temperature controlled system,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,50/60 hz permanent operationtotal output power,it consists of an rf transmitter and receiver,the light intensity of the room is measured by the ldr sensor,although industrial noise is random and unpredictable.brushless dc motor speed control using microcontroller.1800 to 1950 mhz on dcs/phs bands,the output of each circuit section was tested with the oscilloscope,this system also records the message if the user wants to leave any message.this system uses a wireless sensor network based on zigbee to collect the data and transfers it to the control room,2 w output powerdcs 1805 – 1850 mhz,such as propaganda broadcasts.the proposed system is capable of answering the calls through a pre-recorded voice message,a prerequisite is a properly working original hand-held transmitter so that duplication from the original is possible,.