How to power a POE video camera from a laptop without additional 220v injectors?

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nefyodoff2013-06-05 10:15:02

Batteries

nefyodoff, 2013-06-05 10:15:02

Task : to find a simple and convenient solution for testing video cameras on objects to get screenshots showing the required viewing angle, picture quality at night, etc.
Devices : video camera (for example, www.dssl.ru/products/ds-2cd7153-e/?sphrase_id=174832 ), laptop.
Question : How to power a video camera without having 220V at hand? Are there any USB to POE adapters, or is there a spec. accumulators. I would like to get by with a ready-made solution without assembling a bicycle.

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4 answer(s)

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Evgeny Kunitsyn, 2013-06-05
@LordMerlin

Probably with a bike.
1. Almost all cameras are powered by 12V and currents are up to 2A. You won't get that from USB.
2. He will buy an ordinary POE injector (100r) and plus a battery from an uninterruptible power supply (500-600r) and that's it.

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FilimoniC, 2013-06-05
@FilimoniC

Does the camera have non-POE? Look, suddenly there is 5V.
Just shove the 8 and use 4 pairs for data (they will give you 100). USB on one end, camera connector on the other.

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affinity, 2013-06-05
@affinity

on the site
www.hikvision.com/en/products_show.asp?id=506
it is indicated that 12V + -10%, 4W.
Complies with the 802.3af standard
So there will be no problem here - any PoE adapter
But from a laptop ... It's more complicated. In terms of current, the camera needs ~ 0.35A (for USB 2.0 0.5A, for 3.0 even more), but in USB 5 volts ... you can assemble (buy) as suggested above DC-DC converter 5-> 12, just calculate in advance whether there will be enough current after him. There is no other way, IMHO.

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Guzzle, 2013-06-06
@Guzzle

And in the direction of specially designed for this "handheld" did not try to look? Something from this area
www.ebay.com/bhp/cctv-tester