We found this circuit in 1969 American documentation. FETs admit equivalents, as do transistors. The circuit can be used as a shield.
This relay time delay circuit was found in the October 1993 issue of Electronics Now magazine. The timing...
This low noise, low frequency instrumentation circuit was found in a 1976 NASA circuit manual. The...
Hig stability is the main feature of the 10 V regulator circuit shown in the figure and suggested by...