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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.

Circuit schema diagram big power amp

To achieve this, they’re designed with big power output, and equipped with … *Total price for the Circuit schema diagram big power amp Dual Channel are estimated

7 segment display driver ic

7 segment display driver ic 7 segment display driver segment using cd4026 driver segment using BA6250  

Digital volume control circuit

Digital volume control circuit DUAL ELECTRONIC VOLUME CONTROL The KA2250 is a CMOS designed for electronization of dual volumes. It is suitable for M/C, car stereos. FEATURES Wide supply voltage range: Vdd=6V~12V (Backup is possible up to 4V) Attenuation can be controlled from 0dB to -66dB by 2dB/step. Controlling attenuation by means of the built […]

Audio Amplifier Circuit using STK459

Audio Amplifier Circuit using STK459

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