This is the replacement of NISHISHIBA VZRAB-1S.
This AVR has no need for any kind of modifications.
This goes for the cables as well as the mounting. Note that (as with every other compatible AVR
we make) the inner design is completely different
from the original and much improved in every
Practically this will NEVER malfunction again.
This is a subtractive regulator connected to a
compound circuit. This set up is adjusted to
provide a voltage higher than the rated voltage.
The purpose of the regulator is to shunt the
excess exciting current in order to maintain the
voltage at its rated value.