This 4-channel mixer amplifier was found in an American publication from 1947. The circuit uses counterphase output tubes and a transformer power source.
This circuit is from a 1997 English magazine, but it is very current due to the components it...
July 2017 - Diodes Incorporated's ultra low voltage drop voltage (ULDO) AP7380 regulators can now...
This oscillator can be controlled by digital or binary signals from another digital circuit or...