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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.

Mini Electric Massager circuit diagram

Mini Electric Massager circuit diagram

what type amplifier should used to see clear picture?

Onkar asked: we have two TV sets in my home. The first one is connected to dish antenna via set-top box. second one is connected to same set-top box by coaxial cable & it is far from it. so clear picture is not receiving. please help or give the circuit diagram for the amplifier.

Control input lines On off Switching circuit diagram

Control input lines On off Switching circuit diagram using 4011, 4518, 4066, BAT42, VNB8AF

220v Audio vu meter circuit

220v Audio vu meter circuit using TIC226D 220v Audio vu meter circuit using TIC226D

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