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Posts tagged metering

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.

Low Power Quad Operational Amplifier

Low Power Quad Operational Amplifier using LM124, LM224, LM324, LM2902   Low Power Quad Operational Amplifier using LM124, LM224, LM324, LM2902 Description The LM124 series consist of four independent, high gain, internally frequency compensated operational amplifiers Features supply to 32V or dual supplies 15V to 16V

HOW TO WORK PLC ?

A PLC works by continually scanning a program. We can think of this scan cycle as consisting of 3 important steps. There are typically more than 3 but we can focus on the important parts and not worry about the others. Typically the others are checking the system and updating the current internal counter and […]

How to make FM Radio Receiver

Radio fm receiver How to make FM Radio Receiver ? Radio FM Receiver using 2N4416, TL431CLP

100v Power Supply circuit and 300W Audio Amplifier Circuit

100v Power Supply circuit and 300W Audio Amplifier Circuit

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