This vibrato circuit was found in Motorola's 1966 documentation. The circuit uses transistors of the time that can be replaced with current common types. Power is done with 3 9V batteries.
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...