This circuit is used in magnetic tape recorders, having been found in documentation in the 1960s. The circuit uses Japanese transistors, and the critical components are transformers.
This shield circuit with an optical coupler was found in an 90s EDN. The circuit can be used with...
This 2000 circuit, found in the documentation of the time, is intended for charging this type of...
The configuration shown in the figure is suggested by Texas Instruments and supports equivalent...