This circuit was found in a 1967 RCA documentation. The components are of the time. The circuit limits the current to 50 mA when the battery is fully charged.
The purpose of this circuit is to increase the sensitivity of a common multimeter in its voltage...
This is the modern version of the Galena radio in which the detector is a germanium diode (which can...
This circuit allows the measurement of very weak currents indicated on an analog instrument or...