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Posts tagged simple alarm 12c509

Simple Alarm Circuit using 12C509

alarm circuit diagrams Simple Alarm Circuit using 12C509, 2N7000, 78L05

Making gameboy systems circuit

Making Gameboy systems circuit

Audio amplifier pcb 6v6se

Amplifier circuit using 6v6se Audio amplifier pcb 6v6se

Air Conditioning Compressor controller wiring Diagram

Air Conditioning Compressor controller wiring Diagram using relay

TV transmitter VHF Bands I, II, or band III

This TV transmitter will handle frequencies up to about 250MHz, so it will work perfectly if you have on your telly. In principle, the transmitter should work up to 500MHz or more, using the BF959 bipolar transistor. You should be able to generate a signal on UHF channel 21, but I have not (yet) tried […]

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