This amplifier stage was equipped with a Motorola radio from the 70s. The transistors were from that time and the single transistor output used an autotransformer.
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...