Angular pulse generator with flux return

Details Angular pulse generator with flux return Angular pulse generator with flux return

1989-04-17

1990-07-31

Budd, Mark O.

Electrical generator or motor structure

Dynamoelectric

Rotary

310170, 324173, 336135, G01B 730, H02K 1930, H02P 900

Patent

active

049452746

ABSTRACT:
In an angular pulse generator having a movable generator part and a read head, the read head has a primary winding (W1) fed with an alternating voltage of a defined frequency and has a secondary winding (W2) whose induced secondary voltage is modulated by passing teeth and intervening gaps of the generator part. An evaluation unit evaluates the phase difference between the alternating voltage and the secondary voltage and forms a pulse for every passing tooth. A stray flux return line surrounds the primary winding (W1), so that the majority part of the primary flux linked to the primary winding (W1) flows via the stray flux return line for a large gap distance of the generator part.

REFERENCES:
patent: 3980913 (1976-09-01), Peterson
patent: 4024458 (1977-05-01), Templin
patent: 4121112 (1978-10-01), Hartig
patent: 4258279 (1981-03-01), Hovorka

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