This circuit is used in magnetic tape recorders, having been found in documentation in the 1960s. The circuit uses Japanese transistors, and the critical components are transformers.
This circuit was obtained from an American documentation from the 80s. Integrated circuits are...
This circuit is from 2005 documentation. It automatically starts an irrigation pump when the...
Using the CA3140 integrated circuit, this switch was found in the June 1986 Radio Electronics...