This circuit was found in a 1969 Mullard documentation. Used transistors can be replaced with modern equivalents. Output transistors may be BD135 and 136 with heatsinks.
Using a voltage comparator, we find this AND gate on a Popular Electronics from the 90s. The...
We found this circuit in an old documentation from the 70s. Its purpose is to indicate the...
This circuit appeared in the June 1990 issue of Radio Electronics magazine. Integrated circuits must...