Patent ID: 6353310
Filing Date: 2002-03-05
Classification: H02J,H02M

Abstract:
A DC/DC charge and power supply converting module comprising:a DC/DC converter having a control end and an output end; a charge module connected with the control end and the output end of the DC/DC converter, wherein the charge module includes: a comparator having an output end connected to the control end of the DC/DC converter; a first bleeder circuit having an input end acting as a feedback signal end, and an output end connected to a second input end of the comparator; and a constant current source comprising: a first transistor; a second transistor; and a second bleeder circuit including first and second divider resistors, wherein an input end of the first bleeder circuit is used as a measuring end (FDBK) which is adapted to connect to a battery of an electrical appliance for measuring a battery voltage, a base electrode and a collecting electrode of the first transistor are interconnected and coupled to a negative input end of the comparator and an output end of the first bleeder circuit, a base electrode and a collecting electrode of the second transistor are interconnected and coupled with an emitting electrode of the first transistor via a resistor, an emitting electrode of the second transistor being connected with the base electrode of the first transistor and the negative input end of the comparator.