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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.

Battery Charger circuit

Battery Charger circuit using 78L12, 555, MOC3041, 4060

LM555 Circuits Timer 4 part 11

LM555 Circuits Timer 4 part 11

Video Distributor Amplifier

Video Distributor Amplifier using CA3100 Video Distributor Amplifier using CA3100

Classic amplifier OTL circuit20W

Classic amplifier OTL circuit20W Classic amplifier OTL circuit 20W using BC109, AC176, A128 This circuit is Classic Classic amplifier OTL circuit at change quality adaptation. it is model OTL 20Watt hot popular in miss until contain now. Because of there is completed property more than other circuit. In about the popularity in the sound most […]

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