FET Switch (CB6725E)

This switched filter was found in the 1969 documentation. The FET should be current-matched and eventually equipped with a heat sink.

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Infrared receiver (CB6836E)
Found in old documentation, this circuit uses components that are still common on the market. The...
Balance Indicator (CB5021E)
This circuit is from the American magazine that no longer exists Science & Electronics,...
2 to 10 000 Hz Programmable Clock (CB6461E)
This circuit was found in a 1969 US documentation. It provides a signal that can be externally...