Alternating current voltage regulator including saturable induct

Details Alternating current voltage regulator including saturable induct Alternating current voltage regulator including saturable induct

1974-04-05

1977-01-18

Goldberg, Gerald

Electricity: power supply or regulation systems

Remote sensing

323 45, 323 89B, G05F 104

Patent

active

040042154

ABSTRACT:
The invention relates to a voltage regulator for alternating current using a saturable core inductor as a control element for the voltage at the output of the regulator. Each half wave of the output voltage of the regulator is compared with a reference voltage by way of an unfiltered full wave rectifier. An unbalanced bridge having a temperature variable resistor such as an incandescent lamp, in one arm thereof is positioned to receive the pulses produced by the rectifier. At the instant that the pulse wave at the output of the bridge exceeds the reference voltage, the current through the control winding of the saturable core reactor is suddenly blocked. The blockage continues until the pulse becomes less than the reference voltage. This blockage so reacts on an auto-transformer in series with the supplied alternating current as to cause the output alternating current voltage to be reduced. The blockage or interruption causes the change in alternating current voltage to take place very quickly. The use of the bridge having the temperature variable resistor in one arm thereof permits intermediate control, yet increases larger pulse waves to a greater extent than small pulse waves.

REFERENCES:
patent: 2714188 (1955-07-01), Scherer
patent: 3056078 (1962-09-01), Goodier et al.
patent: 3154947 (1964-11-01), Poshadel et al.
patent: 3209239 (1965-09-01), D'Agostino

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