This circuit was found in an American documentation from 1968. The circuit uses transistors from that time. The output currents are shown in the diagram.
This circuit is from a 1975 Motorola manual. The FET can be the BF245 and the output voltage...
We found this circuit in a 1980 documentation. With basic changes, including transistors that were...
This circuit not only indicates when the battery is on but also when it is low. The circuit is...