The original application of this 1967 Ferranti circuit can be changed so that it functions as a pass sensor shield for gears and other moving objects.
Disabling this circuit from a 2002 documentation can only be done by pressing 4 keys in a correct...
We found this circuit in an old Popular Electronics. The circuit can be applied to other...
This TTL circuit with the 7400 serves as a pulse indicator. It must be supplied with a voltage of 5...