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Posts tagged DPDT

Schematic diagram for a broadband QRP SWR metering circuit and SSB TRANSCEIVER 80M / 40M boster filter IF Radio

A schematic diagram for a broadband QRP SWR metering circuit for use in a QRP antenna tuner. One could simply hold a momentary DPDT switch down and watch the LED while tuning the capacitors of the antenna tuner for minimum or zero light.

TDA2009 Circuit BCL 18W

TDA2009 Circuit BCL 18W Bridge audio power circuit

Circuit diagram FM OSCILLATOR WITH BLY87

Circuit diagram FM OSCILLATOR WITH BLY87 Component list of the FM Oscillator with the BF900 Resistors: R1 : 47k, 1/8 W R2 : 47k, 1/8 W R3 : 47k, 1/8 W R4 : 100E, 1/8 W R5 : 220k, 1/8 W R6 : 100k, 1/8 W R7 : 150E, 1/8 W R8 : 10k, lin. […]

Free Usb Mp3 Player Circuit Board Project

Free Usb Mp3 Player Circuit Board Project

MG POWER 805 Circuit

MG POWER 805 Circuit using 1N4004, M8352, 5408

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