This is the power supply for the amplifier in the previous circuit. The voltage regulators must be equipped with a heat sink and the transformer is high current.
This simple Bargraph photometer with 4 LEDs was found in a 1997 documentation. The scale is...
This 7400 TTL circuit has a memory, keeping the LED on when a pulse is detected. The circuit must be...
This constant current source was found in the Linear Applications Handbook of the National...