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.
Found in a 1990s American technical brochure, this circuit is intended for alarms that use as...
We found this circuit in a Japanese 1968’s documentation. The circuit makes use of transistors from...
This useful circuit is used to test the insulation of cables, appliances, leaks in high voltage...