Power supply circuit for an electricity meter

Details Power supply circuit for an electricity meter Power supply circuit for an electricity meter

G - Physics

01

R

G01R 22/00 (2006.01) G01R 31/40 (2006.01) H02M 3/335 (2006.01)

Patent

CA 2242799

Electronic electricity meter comprising a metering circuit and a power supply circuit. The power supply circuit comprises a main condenser (C o) and a transformer (5) regulated by a cutout circuit. The transformer is characterized by additional winding (10) between the toroid (5) and the primary winding (6) and an integration circuit (14, 15) sized to provide a voltage image at the outlet more or less proportional to the voltage of the main condenser.

Compteur d'électricité électronique comprenant un circuit métrologique et un circuit d'alimentation. Le circuit d'alimentation comprend un condensateur principal (C o) et un transformateur (5) réglé par un circuit de découpage. Le transformateur se caractérise par un bobinage supplémentaire (10) entre le tore (5) et le primaire (6) et un circuit d'intégration (14, 15) dimensionnés pour fournir en sortie une image de tension sensiblement proportionnelle à la tensiondu condensateur principal.

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