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Results tagged with ups
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user 72155
A UPS is an Uninterruptible Power Supply that provides backup power when the main power source is lost. Questions on repairing commercial ones are generally off topic.
8
votes
3
answers
846
views
5V ups circuit oscillating?
I'm trying to design a 5V UPS. Power to load should switch if line voltage falls below about 4V. Battery voltage may be from 3.8 to 5V. I'm simulating in LTSpiceIV. …
- 2,197
1
vote
2
answers
811
views
5V UPS circuit with NiMH joule thief backup
I'm trying to design a UPS circuit for microcontroller backup. Require 3.7-5V, and less than 50mA for 10 seconds every 15 min. Power cuts in my area are never longer than 3hours, and occur rarely. …
- 2,197