All Questions
Tagged with security power-supply
3
questions
49
votes
4
answers
9k
views
Why do fire and security systems run at 27.6 V?
I have been looking at buying power supply units for a project, and I keep seeing supplies that output 27.6 V. It's an unusually specific number, so what they are used for, and why is it important ...
- 609
0
votes
2
answers
157
views
Why does a slightly out of specs power supply works and what are the possible consequences? [closed]
I have the following lamp:
Its power supply is rated at 5.6V and 2.68A blew up some time ago.
I then went to an electronics shop where I've been suggested that I could replace it by a universal power ...
- 125
0
votes
1
answer
223
views
Power supply safety standards
I want to build radio/alarm clock that power itself from the wall. I live in Canada. What safety standards should I follow? And is it free to acquire the datasheet of these safety standards or does it ...
- 1,126