Omega Owners Forum

Chat Area => General Discussion Area => Topic started by: JamesV6CDX on 22 August 2008, 12:22:42

Title: Where can I get an adaptor
Post by: JamesV6CDX on 22 August 2008, 12:22:42

I need a mains power adaptor, capable of pushing out 13.5 volts and 0.5amps.

Any idea where I could get one, maybe a universal one? ::)

Even Maplins couldn't help  :'(

Title: Re: Where can I get an adaptor
Post by: jimmas on 22 August 2008, 12:27:21

not sure but I think maplins sell adapters.

Title: Re: Where can I get an adaptor
Post by: jimmas on 22 August 2008, 12:27:58

sorry just seen you have already tried maplins  :y

Title: Re: Where can I get an adaptor
Post by: Marks DTM Calib on 22 August 2008, 12:28:26

So, regulated or unregulated.

DC or AC?

What is the application?

Title: Re: Where can I get an adaptor
Post by: Jimbob on 22 August 2008, 12:28:29

My big one is maplin, upto 12v at 1a, not sure they went bigger

Title: Re: Where can I get an adaptor
Post by: LFF64 on 22 August 2008, 12:29:27

Have you looked on ebay another option is maybe a model shop does it need to be 13.5v you also need to know if it is ac or dc output

Title: Re: Where can I get an adaptor
Post by: LFF64 on 22 August 2008, 12:31:34

RS components or farrnell but you need an account set up unless your near a trade centre They may deal direct with the public

Title: Re: Where can I get an adaptor
Post by: JamesV6CDX on 22 August 2008, 12:31:45

Not sure without looking it up somewhere, but, it's for my Halfrauds 300 powerpack/inverter, if that helps?

Title: Re: Where can I get an adaptor
Post by: Marks DTM Calib on 22 August 2008, 12:34:50

Quote

Not sure without looking it up somewhere, but, it's for my Halfrauds 300 powerpack/inverter, if that helps?

13.5 volts is an odd supply voltage and not standard (the standard is 12 and 15V).

Any info in the instructions as to the input supply range?

CPC do a couple of switch mode supplies with 13.5V outputs

http://cpc.farnell.com/jsp/search/browse.jsp;jsessionid=HL4FYLLWJFYIUCQLCIQJLTQ?N=411+1002145+500001+114087&_requestid=79559

Title: Re: Where can I get an adaptor
Post by: Marks DTM Calib on 22 August 2008, 12:35:55

ANother option would be to get a 15V supply and put a couple of rectifier diodes in series on the output to drop the supply by 1.2-1.3V to give 13.7/8ish

Title: Re: Where can I get an adaptor
Post by: JamesV6CDX on 22 August 2008, 12:36:15

Unfortunately not Mark, All I seem to have is the powerpack. The charger and book has been lost  :'(

Title: Re: Where can I get an adaptor
Post by: Marks DTM Calib on 22 August 2008, 12:38:52

Quote

Unfortunately not Mark, All I seem to have is the powerpack. The charger and book has been lost  :'(

I suspect that there is little in the way of internals to the battery pack regarding the charger circuit.

You could knock something up with an L200 (or similar) reg to provide 500mA current limit and 13.5V voltage regulation I guess....requires a bit of very basic electronic design though.

Title: Re: Where can I get an adaptor
Post by: JamesV6CDX on 22 August 2008, 12:52:26

I just called Halfrauds Tech support, they can get me a new charger for £15. Bargain :D

Title: Re: Where can I get an adaptor
Post by: Kevin Wood on 22 August 2008, 12:58:08

Quote

I just called Halfrauds Tech support, they can get me a new charger for £15. Bargain :D

I was going to say, the other option is that Halfrauds sell trickle chargers in the form of a mains adaptor. Could always buy one of those and chop the crocodile clips off and put a jack plug on.

Kevin

Title: Re: Where can I get an adaptor
Post by: Pitchfork on 22 August 2008, 19:55:43

Quote

RS components or farrnell but you need an account set up unless your near a trade centre They may deal direct with the public

You do not need an acount at Farnell & can pay by credit card
(CPC are also a Farnell company)

Title: Re: Where can I get an adaptor
Post by: theolodian on 22 August 2008, 20:10:02

I think Tesco's has switched mode power supplies for dead cheap.

Title: Re: Where can I get an adaptor
Post by: Marks DTM Calib on 22 August 2008, 20:12:07

Quote

I think Tesco's has switched mode power supplies for dead cheap.

Trouble is that I suspect its more than that.

I know if I was cobbling one of these up for the mass market I would select a cheap wall wart of the correct voltage with built in current limit so it could directly charge the battery with practically no other circuitry required which is hence why I suspect they use the non-standard voltage

Title: Re: Where can I get an adaptor
Post by: Kevin Wood on 22 August 2008, 20:22:04

Wait until Sunday, James. I'll see what I can cobble together.

Kevin

EDIT: Obviously bring it with you. :y

Title: Re: Where can I get an adaptor
Post by: dbug on 22 August 2008, 21:03:17

CPC
or an adaptor shop :-/