This logic tester circuit was published in the November 1980 issue of Radio Electronics magazine. The circuit works with both TTL and CMOS logic and has several selectable functions.
The relay used in this circuit must be of the sensitive type with a trigger current less than 10...
With this circuit it is possible to adapt the input of a common analog multimeter, making it...
This circuit uses a photo-SCR or LASCR that is not a common component today. The relay depends on the...