This digital circuit is from a Radio Electronics magazine from December 1991. It does not use a microcontroller, but rather discrete digital circuits of the time.
In applications where there is no danger of any contact with live points on the circuit by the...
This is an LED effect that we found in a 1988 documentation. The circuit drives LEDs with a...
In the figure we have the way to implement a TTL Schmitt trigger for 60 Hz signals, obtaining...