H - Electricity – 02 – M
Patent
H - Electricity
02
M
321/15
H02M 1/12 (2006.01) H05B 41/28 (2006.01) H02M 1/00 (2006.01)
Patent
CA 2037927
ABSTRACT OF THE DISCLOSURE The invention relates to an economic device for feeding an electronic converter from the mains without the current taken from the mains being affected by an appreciable harmonic distortion, whatever the nature of the load applied at the output of this converter. This device comprises a buffer circuit formed by at least two capacitors 5a and 5b charged by the mains, in series, and discharged each in parallel across the input terminals 9a and 9b of the converter 10. As soon as the latter operates, a fraction of the output HF energy is rectified by the bridge which adds its output signal to that delivered by the first bridge 3. Thus, the supply voltage present at the terminals 9a and 9b has only a reduced ripple rate whereas the current taken from the mains is substantially sinusoidal in phase with the voltage, whatever the nature of the load applied at the output, resistive, inductive, capacitive or non linear. This device is applicable to most electronic converters used as ballasts, transformers, stabilised power supplies, etc..
Courier de Mere Henri E. F. M.
Marks & Clerk
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