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A mid 1930's power transformer'd radio chassis
the power transformer is the large black component located at the right rear
corner.
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A typical non power transformer radio chassis
also known as the "AA5" (All American Five)
it has no power transformer. The tube filaments are series strung. The above
is a typical
"hot Chassis"
radio receiver. |
Power transformer
operated radio vs. a Non power transformer radio
If your radio or TV is AC/DC operated, that means it
has no power transformer and potentially may be a shock hazard if certain
precautions are not met.
An AC/DC radio has no power transformer, one side of the power line
could be at (or near) chassis potential and if any metal part of the radio comes in
contact with with you, a shock may result. For more info please read my write up "operating your
AC/DC radio". Such radios should have a Polarized line
cord to help prevent the shock hazard. DO NOT DEFEAT THIS
SAFETY FEATURE.
A radio (or TV) with a power transformer does not have
this same shock hazard as the transformer isolates the power line from the
chassis. |
