Brushless DC tachometer circuit

Details Brushless DC tachometer circuit Brushless DC tachometer circuit

1977-02-25

1978-05-09

Hickey, Robert J.

Electricity: single generator systems

Generator control

With armature or primary circuit control

307304, 318138, 322 94, 324163, H02P 900

Patent

active

040889432

ABSTRACT:
A brushless tachometer utilizing four stator windings and series connected field effect transistor commutation switches to provide an input to a summing amplifier. Connection of the field effect transistor switches to the summing junction of the amplifier and use of series resistance and back-to-back clamping diodes on the winding side of the field effect transistors permits commutation switching with a minimum of transient voltage changes due to interruption of the stator winding current.

REFERENCES:
patent: 3508137 (1970-04-01), Hill
patent: 3603869 (1971-09-01), Neuffer et al.

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