This circuit is from an ancient American documentation. The transistors are of the time and the circuit uses a special sensor to detect the trigger point to produce spark plugs.
This circuit is old, causing LEDs to be lit sequentially. Several types of games can be programmed using...
We found this circuit in the February 1970 Radio Electronics magazine. It can be used in an analog...
This well-crafted circuit was found in an American documentation from 1975. The components are...