jaybrumley Posted February 16, 2007 Report Share Posted February 16, 2007 hi i was wondering if a qualified electrician or someone that really knows their stuff could help me - i have some 12volt security camera's that did run fine on a 12volt 2amp regulated power supply, now the other day a security camera installer tried to set them up without my 12volt power supply and instead he put a 15 volt 1 amp power supply on the camera's and they didn't work, now when i put them on the proper 12 volt 2 amp power supply it sparks and the camera doesn't show any picture or work at all... Now has this security camera installer blown my camera's by putting too much voltage through them or what? Quote Link to comment Share on other sites More sharing options...
KF4SQB Posted March 25, 2007 Report Share Posted March 25, 2007 That's a good question. I wouldn't have thought that only 3 volts over would've hurt them, but it is possible. A good question at this point is what is the actual, not the rated, output of each power supply? Since you're 12v supply is regulated, it will put out 12v. If the 15v supply isn't regulated, it could be putting out as much as 20v open circuit. Also, what "type" of current is the camera rated for? If it's intended for an AC input, and DC was applied, or vice-versa, it may very well have damaged it. Quote Link to comment Share on other sites More sharing options...
Gazza Posted March 25, 2007 Report Share Posted March 25, 2007 Like the last poster said, there a few factors involved. However, I would say that could definitely damage them. Quote Link to comment Share on other sites More sharing options...
audioguru Posted March 25, 2007 Report Share Posted March 25, 2007 If the supply is DC, then maybe the stupid installer connected the polarity backwards. Quote Link to comment Share on other sites More sharing options...
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