Cctv Board
December 18th, 2009
Have you had a DC adapter fail or burn out?
I connected a DC adapter (input 240v AC UK mains, output 9V 1A) to a cctv camera.
It worked ok for about 30 minutes, then I heard a pop, slight burning smell and circuit breaker on main fuse board tripped.
On subsequent examination, found inside of adapter circuit board badly burnt out, with a component rattling about inside.
Is this a common problem, have you had similar experience with a DC adapter? What could be the cause?
Some good answers so far, thanks. I've just noticed that the product description specified a 12V power supply, but the adapter that came with the camera is only 9V. Would that make sense?
The voltage regulator inside the casing is made to supply only so many amps of current depending on the model. the camera drew more than the regulator could handle. The regulator supplied the overdemanded current for a while, overheated and then popped.
This is most likely the situation.
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