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Posts tagged QRP、

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.

LM556 – LM555 Electronics Schematic Diagram Flip-Flop Made With A LM556 Timer part 33

LM556 – LM555 Electronics Schematic Diagram Flip-Flop Made With A LM556 Timer part 33

Audio compressor circuit diagram

Audio compressor circuit diagram using TL01474CN  

7812 voltage regulator circuit

7812 voltage regulator circuit using 7815, 7812, 21DQ60

200W Audio Amplifier Circuit

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