Power supply device having two AC power inputs

Electric power conversion systems – Current conversion – Having plural converters for single conversion

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C307S087000

Reexamination Certificate

active

06535405

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention pertains to a power supply device, in particular, a power supply device having two AC power inputs, the power supply device being capable of choosing one of the two AC power inputs to be a power supply by determining the voltage level on the one of the two AC power inputs so as to maintain an uninterrupted power supply.
2. Description of Related Art
Most machine or instrument users would regard a power failure or unstable power supply as the most undesirable thing that could happen during the system operation, because it could cause severe damage to the system parts. In spite of the fact that a number of manufacturers claim that their uninterrupted power supply devices could protect users from possible power failure or unstable power supply conditions, most of these devices are based on the recharge-and-standby technology, which is hampered by the limited operating time of the device. Also, these power supply devices are designed with a single power input, but do not take into account what happens if the only power line experiences power failure or unstable power. As a result, a better solution is needed to deal with the above-mentioned problems, and that solution should be convenient to use and able to respond to the unstable power or power failure conditions.
To overcome these shortcomings, the present invention tends to provide a power supply device with two AC power inputs to mitigate and obviate the aforementioned problems.
SUMMARY OF THE INVENTION
The main object of the present invention is to provide a power supply device having two AC power inputs for giving a stable power supply, and when one of the two AC power inputs becomes unstable or cut off, the power supply device will automatically switch to the other AC power input thus preventing the problem of power interruption.
Other objects, advantages, and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the attached drawings.


REFERENCES:
patent: 4473756 (1984-09-01), Brigden et al.
patent: 4890005 (1989-12-01), Schonack

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Power supply device having two AC power inputs does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Power supply device having two AC power inputs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power supply device having two AC power inputs will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3078797

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.