1940s commercial receiver (T1618E)

This receiver was found in a Radio Electronics from 1949. It is a superheterodyne of the time using 6 tubes.

Peak Bargraph Meter (CB5179E)
This circuit was found in an American 1980s documentation. The components are current but most...
Auxiliary flash triggering unit (CB8108E)
Found in a Popular Electronics from the 90s, this circuit applies to flashes with xenon lamps. The...
High Side MOSFET Driver (CB20919E)
Found in old documentation for radio amateurs, this circuit is intended to excite a MOSFET on the...