We found this circuit in documentation from the 1980s. The transformer is of the low voltage type with a 1: 3 turn ratio and the transistors can be of general-purpose types.
Using the ULN-3784B this circuit typically supplies 5 W at 24 W. However, it can operate from 9 V....
This circuit, from a former publication of 1968 was originally designed for germanium transistors, but with the...
This circuit simulates an 18-point digital display using light bulbs, but can be adapted to use...