Suggested by an American publication of 1964 this circuit is intended for the capture of signals from film tracks recorded by optical systems, common at the time.
This circuit was found in Signetics documentation from the 90's. The circuit performance curve is...
In the figure we have a simple timer with two voltage comparators of the four of an LM339. The...
With this circuit, of a 1977 Radio Shack documentation, it is possible to demonstrate the...