security cameras

[Graham.]

It's very useful to an OP when a consensus of opinion develops. One or two answers could be just as clueless as the question.

[Jimk]

Or those that rate their own opinions so much more than others' that they don't even bother reading them...

[fred]

I wish to run a Neos security camera from a 12v supply. The following is from the spec sheet Power Adapter: Input 110-240V (AC/DC) Output 5V/1000mA

What power 12v to 240v dc inverter would i require ?

Is it likely to be as fussy as a computer would be (pure sine wave )?

[nothanks]

If, as the wording implies, you have a mains adapter then ditch this and look for a 12-to-5V DC-DC converter. The "bargain basin" approach might be to re-purpose a car USB adapter.

[Brian Gaff (Sofa 2)]

Can you not just supply the 5v from the 12v via a regulator? Brian

[Andy Burns]

Why not run them on a 12V to 5V power supply?

e.g. a car USB socket

[mm0fmf]

5W

Factor in a little bit extra for efficiencies and losses and the fact you probably don't to run it balls out 24/7 for reliability.

[RobH]

What is the input voltage of the camera. 12v or 5v.

There are plenty of either 12v or 5v power supplies which can be used.

[nothanks]

<minor rant>There seems to be a lot of echo here. WTF do people bother writing replies that are identical to an earlier reply? All it does is add clutter.</minor rant>

[Thomas Prufer]

Avoid that problem entirely and get a 12 Volt DC --> 5V/1000mA converter.

USB charger wot plugs into the cigarette lighter should do it...

Thomas Prufer

[alan_m]

Is this a 12V DC supply. If so there are lots of modules designed for car use that input a nominal 12V DC and output 5V DC. Look on Ebay for "12V to USB" module

[Adrian Caspersz]

Because Gareth, you've been killfiled?

[charles]

very easy: they see the query and reply, later they continue reading the thread and find some has given a similar answer. Usually happen with people wo don't read tehnewsgroup very oftern

[whisky-dave]

wouldn;t be very effcient though , which could be important if yuor 12V is coming from a battery.

[Andy Bennet]

Use a buck regulator which will be 85% + efficient. Plenty of cheap ones on amazon pack of 8 for a tenner:-

[whisky-dave]

yes that is cheap, we ran a lab where studetns had to build a buck converter last year.

[nothanks]

I have no idea why you've said that ... ?

[Brian Gaff (Sofa 2)]

As far as I know those can and do generate RFI if they are el ccheapo. I was not aware it was from a battery though.

Brian