This detector uses an unusual sensor today. The circuit is from an 80s documentation. Its sensitivity is 10 ppm. The transformer has two secondary voltages.
This circuit, suggested by Sylvania in a 1956 publication, serves as an experimental stage for a...
Available at Mouser Electronics this component of Diodes Incorporated consists of a voltage...
This 3-channel sequential circuit, but which can be expanded further, uses triacs to drive...