This circuit was found in the February 1999 issue of Electronics Now magazine. The circuit consists of a timer that triggers a visual and audible starting device.
This circuit is from a 1967 General Electric SCR manual. Modern equivalent SCRs can be used. The...
We found this circuit in a 1985 documentation. The 4-LED bargraph is excited by an input voltage. The...
Using the HA2400 this circuit has its output voltage digitally programmed from the references...