Obtained in a 1968 Electronics World, this circuit uses transistors from the time and the sensor is a common LDR. The component values are for scales from 0.01 to 100 foot-candle.
Using only discrete components, this circuit can control loads up to 8 kW. SCRs should be...
This speed control for small DC motors can operate from 6 to 12 V sources. The motors can drain...
This circuit for analog video signals was found in a March 1988 Radio Electronics. The Maxim...