Method and apparatus for cancellation of magnetizing...

Details Method and apparatus for cancellation of magnetizing... Method and apparatus for cancellation of magnetizing...

2006-06-27

2010-11-23

Ghebretinsae, Temesghen (Department: 2611)

Pulse or digital communications

Cable systems and components

Transformer coupling

Reexamination Certificate

active

07839938

ABSTRACT:
A feedback method and apparatus for cancellation of magnetizing inductance current are presented. A voltage driver applies a voltage signal to a primary of a transformer. Feedback apparatus detect changes in the voltage driver output current that are attributable to magnetizing inductance current. Changes in output current are used to obtain a current error, which is integrated to control a current ramp generator. The output of the current ramp generator is applied to the transformer primary as a compensating current for canceling the magnetizing inductance current.

REFERENCES:
patent: 3818338 (1974-06-01), Chambers et al.
patent: 3881149 (1975-04-01), Kiko
patent: 4096363 (1978-06-01), Earp
patent: 2004/0239487 (2004-12-01), Hershbarger

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