3-71
120VAC models use a doughnut style
transformer. This is a step up transformer to
bring incoming voltage from 120V to 230V.
NOTE: When servicing the toroidal
transformer make sure that the splash shield
is re-installed above it to protect it from water
dripping from connections above.
Advantages of toroidal transformers relative to
other core congurations:
n Magnetic circuit is nearly ideal
n Lower stray magnetic field
n Less volume and weight
n Less audible hum
n Higher efficiency
n Easy mounting
Electrical Shock Hazard
Disconnect power before servicing.
Failure to do so can result in death or
electrical shock.
Replace all parts and panels before
operating.
TOROIDAL AUTOTRANSFORMER
MXR20, 25 & 30 - 120VAC MODELS