Triac activated switch (CB9088E)

This circuit is from an 80's Radio Electronics. It triggers a load powered by the power grid from the audio signal captured by the microphone.

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Second order polynomial generator (CB7902E)
Found in an Electronic Design from the 90s, this circuit generates a mathematical function given by the...
10 kHz oscillator (CB20349E)
This oscillator generates a fixed frequency signal determined by C1 and C2. In the case of 1 nF,...
Distribution Amplifier (CB19012E)
This amplifier for distributing audio signals appears in other articles on this website and even...