This circuit was found in a March 1988 Radio Electronics. The voltage scale is set at R3. 19 LEDs are used in this indicator circuit.
Suggested by the National Semiconductor in 1980s documentation, this circuit uses components from the...
This circuit appears elsewhere on this site. Although the 8038 is not an easily obtainable...
This xenon flasher version for the power grid is from an 80's EDN. The circuit uses a folder and a...