Category Archives: Misc

Audio/Video to UHF TV Signal Converter (Modulator)

This is the circuit diagram of audio/video modulator. The circuit will convert an audio and video signal into a UHF TV signal. It’s desired to connect a video signal originating from a camera or other video source to a normal TV set. The audio and video signal is converted into a UHF TV signal so… Read More »

Telephone Amplifier using LM386

The following diagram is the circuit diagram of telephone amplifier, build based small amplifier IC LM386. This is a easy build telephone amplifier There is no extra electrical power supply required to power up the telephone amplifier circuit, as it draws power from the telephone line itself. The amplifier will supply fairly very good volume… Read More »

Load Cell Amplifier

I’ve found some interesting schematic of load cell amplifier. As we know, load cell amplifier is pretty expensive with fair price range of 100-300 USD. You may built your own load cell amplifier to get the lower cost. Here the two scheme diagram of load cell amplifier circuit: Load Cell Amplifier using AMP04: source:

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