converting 110v to 220v 4x9w

[Amraks]

I ordered a lcd separator from the US with built in UV light
It has a rex-c100 that has 110v to 220v in it the heater part works.

The only drama is the psu for the lighting, it took 30 seconds for a 250v capacitor to blow.

I am looking at converting it to 220v to make the lights work what would I need to change?

[budm]

Re: converting 110v to 220v 4x9w

@240V input, the rectified output voltage will be about 340V way beyond the 250V cap can handle and I hope it did not damage other circuits on the board with that much votage feeding for that long. 120V US will give 165V on the caps.
Can you provide better pictures with straight shot of the board, both sides?
Safe way to power up will be using AUTO transformer made from transformer with dual 120V windings on the primary side.

[Amraks]

Re: converting 110v to 220v 4x9w

Here is some better photos

[budm]

Re: converting 110v to 220v 4x9w

It looks like the trace for the L (LINE) is blown up!, I have a feeling the board is badly damaged.

[Amraks]

Re: converting 110v to 220v 4x9w

Know what kinda board I will need to buy? can't find these any where.


I know if I got one out of a UV light nail cure it would work just the same.

[budm]

Re: converting 110v to 220v 4x9w

I have no idea what the output voltages are and if there is any control signals feeding this board or not, it looks like two transistor switching power supply.

[Amraks]

Re: converting 110v to 220v 4x9w

its just straight hooked up to mains power only isolated by a push in switch.
Nothing is controlling it.

[Amraks]

Re: converting 110v to 220v 4x9w

http://www.ebay.com.au/itm/AU-36W-UV...item51c3f3383f

I reckon I will get one of these just get the power supply board out and wire it all to my machine.

not much effort and its cheap.

I will be curing phones in no time.

You reckon it would be easy to over ride the timer switch?

[Agent24]

Re: converting 110v to 220v 4x9w

Should work as long as it uses the same lamps. I doubt the timer is an integral part of the PSU, probably just disconnect it, should be fine.

[Amraks]

Re: converting 110v to 220v 4x9w

cheers hopefully it all fits.

I am looking for a alternative though, I got until pay day anyway.

I am wondering if you can order these boards else where not knowing what to call them is difficult

[Amraks]

Re: converting 110v to 220v 4x9w

I think I have found out what to call them DC ballast.

[Agent24]

Re: converting 110v to 220v 4x9w

They are generally called electronic ballasts, I believe.

Looking at this http://commons.wikimedia.org/wiki/Fi...st_for_G23.jpg it may be possible to use an old CFL lamp circuit.

http://translate.google.co.nz/transl...D5&prev=search

Or use product such as http://www.ebay.com/itm/SCHWABE-Ball...-/361109484165

Disclaimer, I am not an expert with CFLs\fluorescents etc.

[stj]

Re: converting 110v to 220v 4x9w

if you need a mains to cfl ballast,
just get a dirt cheap cfl and bust it open to use the board.
while your at it, put a decent cap in it like a panasonic NHG instead of the crap they come with.

maybe you should tell us about the lamp(s) you need to drive.

[Amraks]

Re: converting 110v to 220v 4x9w

The lamps are 2 pin, 9w uv lamps.

I have spoken to a electrician he has told me to use a 36w ballast and connect them in series.

[Amraks]

Re: converting 110v to 220v 4x9w

Well I have connected the UV lamps in series just waiting on ballast

I am also going to add a fuse to this machine as it wouldn't hurt to have some protection.
My Scotle IR-Pro-SC v4 has a RCD but in this device there is no room to go to that extreme

[stj]

Re: converting 110v to 220v 4x9w

got a foto or part number for those lamps?
they may be 4 pin tubes with a starter hidden in the base.
if they are, putting them in series probably wont work.