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.
This circuit was obtained in the publication 101 Electronics Projects of 1979. The circuit can be...
The circuit shown in the figure causes an LED to light up or a relay to close its contacts when...
This circuit makes use of a special LM195 power transistor not very easy to obtain. The circuit is from...