Circuit for converting AC voltage into DC voltage
AssigneeKoninklijke Philips Electronics N.V.
InventorThomas Duerbaum
Life of this patent
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Abstract
The invention relates to a circuit for converting AC voltage into DC voltage for one or two consumers (Rm, Ra), in which circuit a first part of the current is fed to the input side via a large induction coil (L50) and a first rectifier (Gm) and a second part of the current via a second rectifier (Ga) upstream of the large induction coil. On the output side, behind the second rectifier (Ga), a switched-mode power supply is arranged, preferably in the form of an up-converter or a flyback converter (10). The division of the applied current for smoothing the output voltage provides that the induction coil (L50) can be accordingly dimensioned smaller and, despite this, the circuit can also satisfy relevant standard specifications.
Claims4
A circuit for converting AC voltage into DC voltage for at least one consumer, comprising,
- two external terminals (EA) for feeding an AC voltage,
- a rectifier module (GM) whose two inputs are connected via connection lines to the two external terminals (EA) and which comprises two output lines with external terminals for coupling this at least one consumer (Rm),
- at least one induction coil (L 50) arranged in one of the connection lines between the external terminals (EA) and the rectifier module (Gm),
- characterized in that at least a second rectifier module (Ga) is present whose two inputs are each connected to one of the external terminals (EA) while bypassing the induction coil (L50) and which rectifier module (Ga) has two output lines for the connection of at least one consumer (Ra) while the output lines include a switched-mode power supply (10) arranged between the second rectifier module (Ga) and the consumer to be connected.
Dependencies are inferred from the claim text.