Demagnetizing power source
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United States of America Patent
Stats
-
Jul 24, 1984
Grant Date -
N/A
app pub date -
Oct 7, 1981
filing date -
Oct 27, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A demagnetizing power source for producing an attenuation alternating field to demagnetize a magnetized substance. This power source is provided with a memory circuit for sending actuating signals to a polarity changing-over circuit to change over the polarity of direct current supplied from a rectifying circuit to an exciting coil. In the memory circuit are stored a plurality of preset demagnetizing patterns. The polarity changing-over circuit changes over alternatively the polarity and gradually decreases the change-over cycle according to the selected demagnetizing pattern.
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