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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.

Replacement Lamp Electric Circuit

Replacement Lamp Electric Circuit

Schema Circuit Diagram of professional audio amplifiers

Schema Circuit Diagram of professional audio amplifiers

Simple Electronic component detection Circuit

Simple Electronic component detection Circuit using NE555, BC108

what is power supply ?

what is power supply ? what is power supply ? This article is about the common off-line switching power supplies used Preamplifiers what is power supply ? +15 and -15 , GND what is power supply ? One unit of Preamplifiers has begun working, while the second one will be operational The power supply +15 […]

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