FIELD: electrical engineering. SUBSTANCE: device for limiting AC voltage has primary voltage converter 2, frequency multiplier 3, functional converter 4, pulse former 5, voltage-to-frequency converter 6, NOT gate 7, six 2AND gates 8-11, 14, 15, two reversible counters 12, 13, two pulse amplifiers 16 and 17 and two thyristors 19 and 20. Device enables accuracy of regulation of output voltage with change of frequency of input voltage to be increased. Regulation of voltage across load 18 is accomplished with the aid of phase control over opposition-parallel thyristors 19 and 20 which angle of switching on does not depend on change of frequency of input voltage. EFFECT: increased accuracy of regulation of output voltage in case of changes of input voltage. 2 dwg
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CONTROL PULSE FORMER FOR THYRISTOR | 1991 |
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MEASURING TRANSDUCER FOR CURRENT AND VOLTAGE HARMONIC COMPONENTS | 1994 |
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TRANSDUCER OF COMPONENTS OF THE FIRST A C HARMONIC | 0 |
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THYRISTOR CONTROL PULSE SHAPER | 0 |
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AC CURRENT FUNDAMENTAL COMPONENT-TO-CODE CONVERTER | 0 |
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Authors
Dates
1994-01-15—Published
1991-12-29—Filed