Constant Volume Amplifier (CB26275E)

This circuit is from a 1990s publication by William Sheets. The circuit consists of a stage whose gain is adjusted according to the signal intensity.

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Touch switch (CB21299E)
Found in American documentation, this switch is based on the 4093. The load will determine the...
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This circuit was found in a 90s Electronic Design. The integrated circuits are from that time....
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The circuit shown was obtained from a 1976s publication for radio amateurs. Its purpose is to...