Long maintenance circuit (CB8866E)

A 0 V signal initiates sampling on this circuit suggested by documentation from the 1970s. The integrated circuits used are uncommon today.

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Class B amplifier (CB23794E)
This interesting transformerless class B output stage was found in a patent registration published in...
Digital Temperature Sensor LM34 (CB14401E)
This circuit provides a digital output on the Fahrenheit scale with a maximum value of 128º F...
Schmitt Trigger 7400 (CB22419E)
This low hysteresis circuit was obtained from old documentation. The circuit must be powered by a...