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Posts tagged sweeping tone

Sweeping Tone Alarm Beeper

Sweeping Tone Alarm Beeper using 4069, TIP29C, NECD882

Amplifiers Audio

Amplifiers Audio using LA4162 circuit board

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.

Audio power amplifier circuit diagram using TA8200

Audio power amplifier circuit diagram using TA8200 Audio power amplifier for all tv

Transmitter Circuit

TV Transmitter Circuit TV Transmitter Circuit using BC547

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