This type of configuration, which appears elsewhere in this section, was found in a 1965 publication by General Electric. The circuit is half-wave and can be built with equivalent SCRs.
This simple electroscope with bipolar transistors is not the most sensitive, but can detect static...
This oscillator for various frequencies was obtained from a 1980s telecom documentation. The...
This circuit is from a July 1970 Radio Electronics magazine. The sensors are metal probes. The 18 V...