POWER SUPPLY SUBSTRATE AND IMAGE FORMING APPARATUS

Abstract: a power supply substrate includes a transformer, switching element and a snubber circuit. the transformer includes primary and secondary windings. the switching element is connected to the primary winding. the snubber circuit is connected to the primary winding, the transformer includes first and second input terminals to which an input voltage is supplied, and mounted on a first surface of the power supply substrate. a second surface opposite to the first surface includes first and second solder portions for soldering. the first and second input terminals are soldered to the first and second solder portions, respectively. the snubber circuit includes a surface mounting component at least in a part thereof, is overlapped with the transformer as viewed in a direction perpendicular to the first surface of the power supply substrate, and is connected to the first and second solder portions.

Inventor(s): AKIRA TATSUZUE

CPC Classification: H02M3/33523 (APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers ; dynamo-electric converters ; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters ))

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