This circuit provides an audible signal when testing a TTL circuit. The circuit is from an old documentation, being fed with the 5V of the circuit under test.
This circuit from March 1984 Radio Electronics is intended to allow the use of an oscilloscope to measure...
This circuit was obtained in an English publication of 1975. It is a circuit that stabilizes an...
This control circuit up to 1 kW was found in a 1967 RCA documentation. The components are from...