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High Frequency, Low Inductance Generator

IP.com Disclosure Number: IPCOM000073811D
Original Publication Date: 1971-Feb-01
Included in the Prior Art Database: 2005-Feb-23
Document File: 2 page(s) / 35K

Publishing Venue

IBM

Related People

Glockler, JA: AUTHOR [+2]

Abstract

This is a brushless generator that permits a high frequency signal to be generated with a low inductance. Metal stampings 11 carried on a rotating by the arrow. Field winding 12 excites metal stampings 11 to become field poles. Direct current is supplied to field winding 12 by printed circuit paths C and D. Armature 14, mounted on stator support 13, is a zigzag or serpentine printed circuit with alternate portions 15 and 16 carrying current in opposite direction. Generated current is available at output terminals A and B. The spacing of stampings 11 is determined by the formula S = 2Pi(w)/60(f); where S is angular displacement, w is angular velocity of rotor in revolution per minute, and f is frequency of output current in hertz.

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High Frequency, Low Inductance Generator

This is a brushless generator that permits a high frequency signal to be generated with a low inductance. Metal stampings 11 carried on a rotating by the arrow. Field winding 12 excites metal stampings 11 to become field poles. Direct current is supplied to field winding 12 by printed circuit paths C and D. Armature 14, mounted on stator support 13, is a zigzag or serpentine printed circuit with alternate portions 15 and 16 carrying current in opposite direction. Generated current is available at output terminals A and B. The spacing of stampings 11 is determined by the formula S = 2Pi(w)/60(f); where S is angular displacement, w is angular velocity of rotor in revolution per minute, and f is frequency of output current in hertz. The spacing of increments 15 and 16 is equal to the spacing of stampings 11, so that two adjacent pole pieces at any given time are inducing current in the same direction in alternate increments of the serpentine pattern. The frequency of the output signal is increased or decreased selectively by increasing the number of pole pieces and accordingly the number of adjacent segments 15 and 16. The generator can be used as a brushless motor by taking the rotational energy from the shaft driven by the rotor on which pole pieces 11 are mounted.

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