Apparatus for recovering an alternating variable of a controlled

Details Apparatus for recovering an alternating variable of a controlled Apparatus for recovering an alternating variable of a controlled

1989-05-02

1990-02-27

Salce, Patrick R.

Electricity: power supply or regulation systems

Including a transformer or an inductor

With compensation

323358, H01F 4006

Patent

active

049049259

ABSTRACT:
An apparatus for recovering an alternating variable having a direct current component in a controlled semiconductor component includes an electromagnetic transducer for measurement having a secondary winding. A sample and hold element has a trigger input, an output and another input connected to the secondary winding of the transducer. A control system for the semiconductor component is connected to the trigger input for feeding trigger pulses from the control system to the trigger input at respective control times of the semiconductor component. A comparator has a first input connected to the output of the sample and hold element for receiving an output signal proportional to the direct current component, a second input connected to the secondary winding of the transducer and an output supplying the recovered alternating variable.

REFERENCES:
patent: Re28851 (1976-06-01), Milkovic
patent: 4255704 (1981-03-01), Milkovic
patent: 4255705 (1981-03-01), Milkovic
patent: 4278940 (1981-07-01), Milkovic
Hewlett-Packard Journal, vol. 26, No. 6, Feb. 1977, pp. 11-18; J. E. McDermid et al., "A High-Speed System Voltmeter for Time-Related Measurements".

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