Regulator / Rectifier changeover
1987 Yamaha SRV 540
The overall project space. Motor removed for case seal
work. Reg/Rect, installed, is the blue box in the lower right
portion of the picture. This is a pull start motor - no
pre-existing 12V DC power setup. Existing power is AC with a
voltage chop at 12V.
The original device - it simply dumps excess voltage to ground (in
excess of 12V).
Original mounting holes - too close for the Key West
Space exists for the new unit so a third hole is drilled. The
middle hole will go unused. The project is such that the original
wiring and devices could be plugged in without re-work.
Top two posts are for the incoming variable voltage AC.
Bottom two posts are for the outgoing, near constant, 12 volt DC power.