64 us pulse delay (CB6659E)

Found in a 1968 Electronic Design, this circuit makes use of an unusual ultrasonic delay line today.

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Three-input majority gate (CB7248E)
This interesting logic circuit was found in a manual of neon lamp applications. | Clique na imagem...
Delayed Relay (CB932E)
This circuit uses a sensitive reed relay to control external loads. The time delay is given by the...
High impedante circuit for sensor (CB20542E)
This circuit for PC and which can also be used with microcontrollers was found in an English...