This test circuit was found in the PE Hobbyst Handbook in a 1990s edition. The circuit tests the battery under load. The load, as the battery is selected by the switch.
Found in a 1966 Electronics World, this circuit applies to the protection of any analog...
We found this circuit in an English documentation from the 80's. The circuit can make use of...
The power of this converter is not the greatest, it can only supply small fluorescent lamps,...