This circuit uses uncommon Texas Instruments components today. The circuit is from an American documentation. Transistors are commonly used PNP. The display is 7 segment multiplexed.
The SCR sector of this circuit can be powered by high voltage AC and instead of the LEDs we can...
The values of the capacitance between output A and ground can be programmed digitally in 18 steps...
This circuit was originally used in a 1989 documentation presence simulator. The circuit activates...