Tagged Questions
10
votes
3answers
615 views
Cellphone charger has no transformer?
I opened up a really tiny mobile phone charger I have, to see how it is designed. The entire "charger" is integrated into a small 2-pin mains plug, 1 x 1.25 x 0.5 inch, that has an USB socket for the ...
2
votes
5answers
1k views
acceptable bounds for replacement DC adapter [duplicate]
Possible Duplicate:
Chosing power supply, how to get the voltage and current ratings?
I've got a broken gadget that is discontinued. The only thing broken is the power supply (verified by ...
1
vote
3answers
132 views
DC adapter not supplying current
I'm trying to get .5 A of current from a mobile phone's DC adapter, which is within its rated specifications. I am able to detect a voltage of ~5 V DC between the power and ground wires, so it seems ...
1
vote
2answers
194 views
Powering a DC to DC power supply that came without an adaptor
I bought a mini ATX DC to DC power supply on eBay to use with a motherboard. Unfortunately I did not notice it came without any kind of adaptor. So what I have is basically two wires, red and black, ...
6
votes
7answers
941 views
Is it safe to use a DC power adapter that isn't UL Listed or CSA certified?
I picked up a 9V switching DC adapter from SparkFun a while back, but I've been hesitant to use it because it doesn't have any of the usual "safety" approvals that you normally see on power adapters ...
3
votes
5answers
611 views
How to deal with a DC adapter with irregular voltage output?
Background information:
I tried hard to get a Schmitt-trigger working, but it kept failing. By accident I figured out, that my AC-to-DC adapter produces a very irregular voltage output (I could hear ...
4
votes
3answers
720 views
Correct DC Adapter type to use for Arduino
What's the correct DC Adapter to use with Arduino? Voltage etc?
