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Description: A small 325mW amplifier with a voltage gain of 200 that can be used as a bench amplifier, signal tracer or used to amplify th...
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Description The circuit is a microphone amplifier for use with low impedance (~200 ohm) microphones. It will work with stabilized voltages...
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Battery-operated 3 LED display Simply connect it to loudspeaker output Circuit diagram
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Talking Voltmeter Ever needed to measure a voltage without taking your eye off something? If so, then this is the project for you! The Or...
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This schematics function is to enable one to trace an audio signal through a maze of wires running around the house. As shown in the s...
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The basic concept of the Keyglove is to generate input signals by touching unique combinations of conductive sensors together. These sensor...
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Description: This circuit takes an ordinary loudspeaker and allows it to be used in reverse, as a microphone. Circuit diagram Notes: T...
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