RF Amplifier Circuits

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2m VHF FM PMR transceiver to amateur radio converter
8 Channel PWM with AT90S1200
500kHz to 4 MHz Converter
Air-motion-detector
Arduino GSM Shield
LED Flasher 2-Transistors circuit diagram
DS1621 IIC interface under Linux drives designing
Fun with Filters!
Simple Emergency Light
water alarm schematic
Loudspeaking radio receiver with a bridge amplifier powered by free energy



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