Is there a stand alone +- 9v power supply in the uk

[Austin73]

Hi everyone , just wondered if anybody knew of a +-9v power supply in the uk (230v ish) must be about 1A too. I had a quick look but got lost in the mele of car rubbish. I know I could build one possibly using the Max1044 but just wondered if there was an of the shelf one as it might be smaller than the one I make! lol

Sorry scrap the above this is what I need (info from Pete Cornish!)


The power supply is 18Vac centre tapped at 1 amp (i.e. 9-0-9 Vac). I do
not know how this would be connected to the Mitigator as I hard wired
the PSU in Lou's pedalboard.

Cheers for any info

Aus

[Austin73]

Just opened the mitigator up and it has 3 connections to the board 2 red and one yellow . I presume the yellow is 0 volts and the reds are 9vAC but no idea why it has to have 2 9vAc inputs? Any ideas?

Aus

[AndyA]

Are you 100% it's AC? What sort of pedal is it? If it is AC all you need is a 9v transformer, a box of some kind and the right cables. Maplin sell all of the above. N06CF would be a suitable transformer. They don't sell a complete power supply at this spec. It really would just be the transformer and a couple of wires in a box though.

You're probably right about which wires are which. The reason why it needs two AC supplies is probably so that it can make a positive and a negative DC supply. Do the power leads go into a rectifier or rectifying diodes?

[Austin73]

Cheers Andy I did notice some AC adapters that would be fit for purpose if I could understand what the hell was going on . The power supply connects with a 5 pin Din plug but only 3 pins are connected. need to get the original power supply back and have a play . Jesus it can't be that complicated!

When I have more info can I PM you if I need more help

Cheers

Aus

[dxm1]

With a center tapped AC supply, you may use a single bridge rectifier like this:

http://users.ece.gatech.edu/~mleach/lowtim/pwrsply.html

or this:

http://www.electronicsinfoline.com/CircuitBook/Power_Supply_and_Battery/Dual_Polarity_Supply/6876.html