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US 6,430,071 B1Granted
Rectification circuit
AssigneeNTT Data Corporation
InventorMasaji Haneda
Life of this patent
Estimating the term…
Abstract
The present invention sets forth multiple embodiments of an electrical circuit which rectifies alternating current in a manner which results in very little electrical loss. This is in contrast to conventional rectifier circuits that use simple diode configurations which typically give rise to voltage losses from 0.4 volts to 1.0 volts.
Claims7
A rectification circuit comprising:
- a transistor and
- a control circuit connected to said transistor, wherein
- said transistor comprises a current path and a control terminal, receives a target voltage to be rectified at one end of said current path, and outputs a rectified voltage at the other end of said current path by being activated and inactivated in accordance with control of said control circuit,
- said control circuit is connected to said current path and said control terminal of said transistor, and controls a signal to be supplied to said control terminal, in accordance with the direction of a current flowing through a node between the one end of said current path and an external circuit, thereby activating or inactivating said transistor to make said transistor rectify said target voltage, wherein
- said transistor serves as an inverse transistor when it is turned on.
2 more elements
A rectification circuit comprising:
- a transistor and
- a control circuit, connected to said transistor, wherein said transistor comprises a current path and a control terminal, receives a target voltage to be rectified at one end of said current path, and outputs a rectified voltage at the other end of said current path by being activated and inactivated in accordance with control of said control circuit;
- and
- said control circuit is connected to said current path and said control terminal of said transistor, and controls a signal to be supplied to said control terminal, in accordance with the direction of a current flowing through a node between the one end of said current path and an external circuit, thereby activating or inactivating said transistor to make said transistor rectify said target voltage, wherein
- said control circuit comprises:
- a transformer having a primary winding connected to one end of said current path of said transistor and a secondary winding connected to said primary winding magnetically;
- and
- a circuit, connected to said secondary winding of said transformer, for controlling a signal to be provided to said control terminal of said transistor, in accordance with a current induced in said secondary winding,
- said control circuit comprises a conversion circuit for converting a current induced in said secondary winding into a voltage signal, and an amplifier which amplifies the voltage signal converted by said conversion circuit and applying the amplified voltage signal to said control terminal of said transistor.
6 more elements
A rectification circuit comprising:
- a transistor and
- a control circuit, connected to said transistor, wherein
- said transistor comprises a current path and a control terminal, receives a target voltage to be rectified at one end of said current path, and outputs a rectified voltage at the other end of said current path by being activated and inactivated in accordance with control of said control circuit;
- and
- said control circuit comprises:
- a transformer having a primary winding connected to one end of said current path of said transistor and a secondary winding connected to said primary winding magnetically;
- a conversion circuit for converting a current induced in said secondary winding into a voltage signal;
- and an amplifier which amplifies the voltage signal converted by said conversion circuit and applying the amplified voltage signal to said control terminal of said transistor.
5 more elements
Dependencies are inferred from the claim text.