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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Interface CMOS – TTL (CB394E)
Figure Bellow shows how to interface CMOS circuitos with TTL using the 4049 or 4050 IC. The power...
Summing amplifier without adjustment (CB19718E)
This circuit is from a manual from the 80's and the operational one used, uncommon nowadays, can...
JFET voltage reference (CB21590E)
Based on National Semiconductor's LM4130 reference circuit, this circuit was found in Internet...