This simple digital circuit tester can work with TTL technology when powered by 5 V and with CMOS when powered by voltages from 3 to 15 V. The circuit provides LED indications and uses current ICs.
We found this shield circuit in a 1991 technical documentation. The phototransistor can be...
This circuit is suggested by National Semiconductor and is based on the LM3900, a quadruple...
This circuit for analog video signals was found in a March 1988 Radio Electronics. The Maxim...