Power supply apparatus for outputting first and second voltages from one transformer and image forming apparatus including power supply apparatus
US10503108B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 1, 2018 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Aug 1, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/335
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A power supply apparatus including a transformer, a first rectifier smoothing unit, a separation unit, a second rectifier smoothing unit, a resistor, and a rectifier unit. The first rectifier smoothing unit is configured to rectify and smooth an alternating-current voltage generated in a secondary coil of the transformer. The separation unit configured to use the alternating-current voltage generated in the secondary coil of the transformer as an input and generate an alternating-current voltage, from which alternating-current components are separated, as an output. The second rectifier smoothing unit is configured to rectify and smooth the output of the separation unit. The resistor is connected to a line branched from a line that connects the separation unit to the second rectifier smoothing unit. The rectifier unit is connected in series between the resistor and a reference potential.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.