Power supply system for stopping and starting operation in accordance with input voltage and image forming apparatus including the same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 18, 2014
Issued Date -
N/A
app pub date -
Oct 22, 2012
filing date -
Oct 31, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A power supply apparatus determines that an input AC voltage has reached a voltage at which a power supply control IC can start operating, based on the voltage at an auxiliary winding of a transformer included in a first converter. Note that since the first converter operates so as to maintain a constant voltage at the auxiliary winding, whether the input AC voltage has fallen to an operation lower limit voltage or lower cannot be detected by only monitoring the voltage at the auxiliary winding. The power supply apparatus monitors a second voltage that is proportional to the input AC voltage is generated from the voltage being applied to the primary side of a second converter. Accordingly, the power supply control IC starts and stops operating in accordance with the input AC voltage.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully