NOR gate with the 7400 (CB22406E)

The configuration below shows how to use the 7400 as a NOR function. The circuit is TTL and must be powered with 5V.

LED blinker (CB7195E)
This blinker for LEDs up to 500 mA was found in General Electric documentation from 1970....
5 V x 1 A Power Supply (CB18994E)
This power supply was found in the 1996 Texas Instruments Linear Applications Manual. The circuit...
Overvoltage Indicator (CB22007E)
Using a CA3130 operational amplifier, this circuit drives an LED when the voltage exceeds the...