Found in an Electronic Design of the 90's, this circuit provides an additional 12 V output to a 5 V regulator. The maximum current is 200 mA.
This logic circuit can indicate both TTL (5 V) and CMOS (5 to 12 V) output levels, operating with...
We found this circuit in an old American documentation, from 1971, but the component used is still...
This circuit is from an Italian magazine Radio Elettronica of January 1977. The circuit shows how...