This transformerless circuit was obtained in a 1965 publication by Ferranti. The components are from that time, with emphasis on the type of engine used.
Indicated for applications in the analysis of logic circuits, this circuit was found in 90s Radio...
This circuit is from 1977 documentation, and high current equivalent transistor must be used. The...
Found in an Electronic Design, this circuit makes use of general-purpose bipolar transistors. The circuit...