Electric lighting and power controllers therefor

Details Electric lighting and power controllers therefor Electric lighting and power controllers therefor

H - Electricity

05

B

315/19, 315/26

H05B 39/08 (2006.01) G05F 1/455 (2006.01) H02M 5/257 (2006.01)

Patent

CA 1327990

ABSTRACT ELECTRIC LIGHTING AND POWER CONTROLLERS THEREFOR In a lighting power controller having a controllable switch (such as a thyristor), in order to compensate for perturbations in the mains supply waveform, the waveform is analysed and a table is set up of thyristor firing angle against output RMS voltage. To obtain a desired output RMS voltage, the thyristor is fired at the angle indicated by the table.

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