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 indicator circuit used and game machines (arcades) to indicate that the machine is being...
We found this configuration in a 1974 technical documentation. It can test both TTL logic circuits and...
We found this circuit in a 1997 documentation. Its purpose is to turn a load on or off using...