Double limit detector (CB9589E)

Found in ancient American documentation, this circuit uses some components from the time, such as comparators.

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Remote Control Transmitter (CB469)
This continuous wave transmitter (CW) can send signals in the 30 to 100 MHz band, depending on the...
Twin T Oscillator (CB3965E)
This is one of many twin-T oscillator configurations that can be found in this section and on this...
Automotive alarm (CB8962E)
Found in a 1980s American documentation, this circuit inhibits ignition. The circuit is valid for...