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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.

Is there a software that can do a PCB design automatically from a schematic?

Moonatic_aka stig is lebanese asked: without having to do all the connections urself , is there a way on ARES?

Delay to switch protector circuit

Delay to switch protector circuit using SL100, BC108

Active Crossover and Speaker Matching

Active Crossover and Speaker Matching Circuit Diagram using TL082

Circuit diagram remote control

TV remote control Circuit diagram using SL490 This is a 32 channel infrared remote controller circuit fundamentally includes key pad, decoder, transducer stage, an output and a battery. Every key pad button generates 5 bit binary code and IC1 sends this code to the IR leds through D1 and D2 diodes.  Code is shaped from […]

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