This circuit was obtained in a 1982 English magazine. The purpose of this circuit is to interface signals other than TTL circuits with TTL inputs. The transistor can be a BC548, 2N2222 or any equivalent.
The circuit was originally designed to operate with MSX microcomputers in 1988 but can be used to...
This low noise audio amplifier stage uses only one transistor and has a high enough gain to...
Found in a 1967 Electronics World, this circuit uses components from the time. Modern...