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Stepping Motor and Detent Circuit

IP.com Disclosure Number: IPCOM000093557D
Original Publication Date: 1967-Nov-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 41K

Publishing Venue

IBM

Related People

Mako, J: AUTHOR

Abstract

As shown in A, detenting of a stepping motor, represented by windings 10, is effected by gating the A and B drivers through And's 12A and 12B with the output of trigger 14. The latter is driven by multivibrator 15 when the motor is stopped. The gating signal to the And's is provided by a pedestal signal when the motor is running. Timing curves for the operation are shown in drawing B. By using the multivibrator 15 gating signal, the duty cycle of the A and B drivers is greatly reduced, thus lowering the losses otherwise incurred by full-current detenting, but still maintaining the detenting effect of the full current.

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Stepping Motor and Detent Circuit

As shown in A, detenting of a stepping motor, represented by windings 10, is effected by gating the A and B drivers through And's 12A and 12B with the output of trigger 14. The latter is driven by multivibrator 15 when the motor is stopped. The gating signal to the And's is provided by a pedestal signal when the motor is running. Timing curves for the operation are shown in drawing B. By using the multivibrator 15 gating signal, the duty cycle of the A and B drivers is greatly reduced, thus lowering the losses otherwise incurred by full-current detenting, but still maintaining the detenting effect of the full current.

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