Constant output current load driver

Details Constant output current load driver Constant output current load driver

1994-02-22

2000-09-05

Han, Jessica

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

363 97, H02M 3335

Patent

active

06115265&

ABSTRACT:
A transformer-coupled load driver (10) is adapted to provide a constant level of output current under condititons of variable input voltage and/or variable load resistance. The load driver (10) is provided with a current sensing resistor (30) which is included in an output branch (14) of the transformer (12). A pulse-width modulator (18) is used in conjunction with a voltage divider network (20) to sense current flow through the resisitor (30) and to control the current output of the branch (14) via modulation of a control signal delivered to the gate of a transistor (16).

REFERENCES:
patent: 5297014 (1994-03-01), Saito et al.

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