Speed and direction control for shunt motors (CB5418E)

This circuit for shunt motors was found in an American 1980s documentation. The SCR should be rated for the controlled load as well as the diodes.

Analog Counter (CB6140E)
This Intersil circuit was found in a 1980s documentation. Operational are of the time, but current...
New Low-Power PIC24 “GA7” Microcontroller Family Now Available
New Low-Power PIC24 “GA7” Microcontroller Family Now Available CHANDLER, Ariz., Dec. 12, 2016 — The...
Polarity Converter (CB5289E)
This circuit was found in a 1976 NASA manual, making use of components of the time. The transistor...