This circuit was found in the May 1984 issue of Radio Electronics magazine. It analyzes the exhaust gases emitted by a car. The circuit uses a special gas sensor from that time.
This circuit has a gain of 10 for DC signals. The circuit is from a Radio Electronics from May...
This circuit was found in Texas Instruments documentation from 1968. The transistors are from that...
This simple half-wave control using an SCR, which may be TIC106, has been obtained from a US...