This game was found in Radio Electronics from the 90s. The components used are common except some that are from that time and that can no longer be found easily.
Found in a Motorola documentation from the 70s, this circuit makes use of transistors of the time....
In the figure we show how to use common diodes to get a reference near 3 V in a car gearbox. The...
The transistors of this 12 V x 150 mA power source can be BC558 for PNP and BD135 for NPN. The...