This circuit is from a 1968 Motorola power circuit manual. The circuit uses transistors of the time. The passing band is 45 Hz to 100 kHz.
January 2017 - Pulse Electronics' new current sensing insulation transformers for automotive...
This circuit was found in an American publication from 1965. The circuit uses components from that...
This electronic Morse key was found in a Popular Electronics from the 90's. The components are common,...