This circuit was found in the February 1970 issue of Radio Electronics magazine. The integrated circuit is a type of the time. It consists of a high-gain differential amplifier.
This blinker for LEDs up to 500 mA was found in General Electric documentation from 1970....
This power supply was found in the 1996 Texas Instruments Linear Applications Manual. The circuit...
Using a CA3130 operational amplifier, this circuit drives an LED when the voltage exceeds the...