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.
When the power is on, the 1 µF capacitor charges slowly by R1 and P1 until then on trigger...
This capacitance or approximation relay was found in an ancient American documentation. The SCR...
July 2017 - The new Surface Mount SM0402xx LEDs from Bivar can be found on Mouser. The new...