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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.

Tone Control circuit diagrams using IC TL082

Tone Control circuit diagrams and using IC TL082 I’d like to ask for some good schematic for active tone control, for treble and bass (cca+-20dB) with loudness compensation, I have saw several designs, but all of these designs uses elements that I want to avoid.

Electronic Component LA4440

18W Audio Amplifier circuit using LA4440 Electronic Component 18W Audio Amplifier circuit using LA4440

Power Supply soft start

How to start power supply ? and slow start power supply ? Power Supply soft start Circuit diagram design How to start power supply ? and slow start power supply ?

short circuit sound effect

short circuit sound effect using 2N3904, 2N3906

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