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 was found in Linear Circuits Applications of Texas Instruments, originally using the...
This circuit, from a 1988 publication, consists of a timer that activates a relay at the end of a...
This configuration was found in the Texas Instruments optoelectronics manual. PNP transistors...