This RCA circuit has current limitation. The circuit is from an ancient American documentation making use of components of the era. The circuit includes the power supply.
This circuit, which can be built with several CMOS gates, was found in the March 1996 issue of...
This isolation circuit for audio signals was found in the August 1992 issue of Radio Electronics...
The setting of this power supply is only 0.1%. We found it in a 1969 US documentation. Transistors...