GSM band RF detector circuit for detecting the signals based on the LM358 circuit in an electromagnetic field in the coil when there is a small voltage intentionally induced. Coils connected to the ends of the dipole antenna and RF signal detected from a distance it is arranged for
GSM Cell Phone Detector Circuit
GSM Cell Phone Detector Circuit ZIP File Password: 320volt.com
350 Watt Studio Amplifier Circuit MJL21193 MJL21194
Quite strong quality studio symmetrical amplifier circuit supply voltage + – 2×70 total of 140 volts dc volts DC Volts high voltage, be careful.
Of the amplifier to the power supply 500 Watt 2 × 50-volt transformer see your work output transistors for the 4 × 4 MJL21194 and MJL21193 used prices can be high, but for this work have been produced quite powerful transistors also this power amp for your circuit output protection circuit would recommend The circuit will have to do . Circuit 8-ohm speakers with 4-ohm speakers with 200w 350w is powering.
GSM-Handy-Detektorschaltung
GSM-Band-HF-Detektorschaltung zum Erfassen der auf der LM358-Schaltung basierenden Signale in einem elektromagnetischen Feld in der Spule, wenn absichtlich eine kleine Spannung induziert wird. Spulen, die an die Enden der Dipolantenne angeschlossen sind, und HF-Signal, das aus einer Entfernung erfasst wird, für die es vorgesehen ist