Electronic proximity switch dependent upon a magnetic field
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United States of America Patent
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Jan 12, 1988
Grant Date -
N/A
app pub date -
Oct 2, 1986
filing date -
Oct 2, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A magnetic field dependent electronic proximity switch adapted to be operated by a magnetic trigger, with the switch comprising an HF tank circuit of an oscillator circuit, which tank circuit can be acted upon by the magnetic trigger, the coil arrangement of the oscillator circuit exhibiting a tank circuit coil and a coupling coil and being associated with a magnetizable member which, starting with a specific magnetic field strength is drivable into magnetic saturation by an external magnetic field of the magnetic trigger with undamping of the tank circuit. The magnetizable member includes an amorphous or predominantly amorphous metal band, with the coil arrangement being disposed on a joint bobbin and the metal band being fashioned as a linear strip member or a slotted ring having an opening on a response side of the proximity switch.
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