This circuit was obtained from an American documentation of 1967. The circuit provides a 30 mA output current for driving standard Nixie indicator tubes at the time.
This configuration can be found in other articles in this section. This was obtained in a 2000...
The circuit shown has a voltage gain of 500 times and can use equivalent FETs like the BF245. The...
Disabling this circuit from a 2002 documentation can only be done by pressing 4 keys in a correct...