Surveillance Bug Circuits

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PWM Fan Controller schematic
Glitch-free-turbo-circuit
Current Source
2800w high power audio amplifier
wireless temperature sensor
Auto Fade Implementation on Audio Signals Project PCB
Op Amp 741 Inverting Amplifier Circuit Simulation with output wave form and working
SimpleTimer with Musical Alarm
Intercom
Micropower 1A Boost Converter with Schottky and Output Disconnect
DIY ECG Machine On The Cheap
Basic Connection circuit diagram INA326 327 signals and power



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