FDM Stereo Decoder (CB6209E)

This frequency division multiplexing signal decoding circuit is from a 1980s documentation. The integrated circuit used is not very common today.

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Constant Current Source (CB6625E)
This two-transistor constant current source is from a 1968 documentation. Modern equivalent...
Pulse Width Multiplier (CB6349E)
This circuit is intended to increase the width of a pulse. The circuit is TTL and can be used as a...
Phase Inverter (CB13389E)
This circuit was found in a 1977 documentation. The gain is 3 dB and instead of the original...