Low Drift Sampling and Hold (CB21227E)

This circuit was found in National Semiconductor documentation from the 1990s. It applies to modern components.

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Touch Sensor 4013 (CB17390E)
This bistable circuit with the CMOS 4014 can be found in several ways in this section and on this...
7812 High Current Regulator (CB4840E)
In the figure we have a way of obtaining a 13,2 V with current up to 5 A using an integrated 7812...
Divider by 5 4 or 3 (CB6899E)
We found this circuit in documentation from Ferranti from 1968. The circuit uses transistors from that...