Method and apparatus for initiating the automatic regulation of

Details Method and apparatus for initiating the automatic regulation of Method and apparatus for initiating the automatic regulation of

1991-06-18

1993-12-07

Stephan, Steven L.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

363 45, H02M 7155

Patent

active

052688313

ABSTRACT:
In order to initiate the automatic regulation of the operating current of a current source in a power supply unit upon closing the operating load circuit connected to the current source, it is proposed that the current source is controlled by presetting the circuit parameters such that the current flowing in the operating load circuit upon closing the operating load circuit reaches a preset or desired value. The current regulation is brought into effect as soon as the difference between the effective value and the preset desired value of the current flowing in the operating load circuit falls below a predetermined threshold value. For this purpose, a regulation circuitry is provided, comprising a voltage regulator, a current regulator and a switching circuitry with a threshold value circuit. The switching circuitry generates a switching signal which effects the change from the initial voltage regulation to the subsequent current regulation as soon as the operating current exceeds a preset value.

REFERENCES:
patent: 3617859 (1971-11-01), Dobkin et al.
patent: 3651333 (1972-03-01), Goldberg et al.
patent: 3683262 (1972-08-01), Neuffer et al.
patent: 4177389 (1979-12-01), Schott
patent: 4224662 (1980-09-01), Boniger
patent: 4594501 (1986-06-01), Culley et al.
patent: 4703249 (1987-10-01), De La Plaza et al.
patent: 4999760 (1991-03-01), Tietema

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