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Posts tagged DTMF

Telephone Circuits

Telephone Circuits

Radio Remote Control using DTMF receiver transceiver

Radio Remote Control using DTMF receiver transceiver

DIY Intercom Circuit

DIY Intercom Circuit Intercom Cable Full-duplex Intercom circuit schematic , cable on the way to the intercom circuit

CMOS integated circuit

The 4093 CMOS integated circuit using BC547 , BC548 The 4093 CMOS integated circuit Parts R1 180 KOhm R2 12 KOhm R3, 8 47 KOhm R4 3,9 KOhm R5, 6, 16 10 KOhm R7, 10, 12, 14, 17   100 K R9, 11 1 MOhm R13, 15 3,3 KOhm C1, C6 10uF/16V C2 47uF/16V C3 […]

cut off low Circuit Diagram

cut off low Circuit Diagram for disconnect car battery using ADM666A, 2N2222 This is a circuit diagram for a solid state charge detector. It can detect very weak electric fields. The circuit has three components: a 6-volt battery, a light-emitting diode (LED), and a field-effect IC ADM666A

Dancing LEDs pcb diagram

Dancing LEDs pcb diagram using 4017, 555

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