This bridge was found in a Raytheon transistor manual from the 1960s. The transistors are germanium from the time.
The purpose of this circuit presented in a 2009 documentation is to monitor, by means of neon...
This circuit was found in old FET documentation, but it applies to any modern common JFET. The...
This simple voltmeter was found in Popular Electronics from May 1968. The circuit makes use of a...