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 partial circuit that must be added to a preamplifier output transistor as in CB19186E...
This 4-competitor TTL speed game was obtained in a 1980s documentation, but can still be easily...
We find this circuit in an American publication of 1978. The integrated circuit is the CMOS 4013...