We found this circuit in a 90's EDN. The circuit is based on a control integrated that is still common in these types of applications. The circuit uses a PROM.
The purpose of this circuit is to monitor the output voltage of a power supply. The under and over...
Old multimeters used a 22.5 V battery for high resistance measurements. If you have one, you...
In the figure we show a monostable that uses two of the four ports available on 4001. The duration of...