This circuit was found in a 1967 Japanese documentation. It consists of a touch control system with two transistors from the time. The circuit uses a power source and sensitive relays.
This experimental TTL circuit is from 1992 documentation. It produces programmed sounds set in the...
This circuit is from a 1968 Electronic Design. The characteristics of the output transformer are not...
In the figure we have a circuit that fires from a positive pulse of short duration applied to its...