This circuit is from a Ferranti publication of 1968. The circuit generates a signal according to the crystal. The transistor may be a modern equivalent.
This circuit, found in a publication of the year 1968, uses a transformer to drive two power...
This circuit was obtained in an old American manual. The circuit is valid for any operational. The...
This circuit, found in a 1994 documentation, uses 20 A 2N5448 triacs or equivalent and should be...