My DAC just burned the transformer and it looks like a custom made one with five secondary windings. No doubt replacement won't be found on normal RS/Element14 websites. Anyone has a clue to find replacement? Please see the attached photo.
Try the makers, they might have one in stock or suggest a distributor who does.
http://wiccltd.com/contacts.htm
That said, agree with Mooly, something destroyed it and it most probably was the DAC circuit itself.
It would be a pity and a waste of time trying to source another, only to find the quest was in vane.
Personally, I´d start looking for a new DAC, sorry.
http://wiccltd.com/contacts.htm
That said, agree with Mooly, something destroyed it and it most probably was the DAC circuit itself.
It would be a pity and a waste of time trying to source another, only to find the quest was in vane.
Personally, I´d start looking for a new DAC, sorry.
Thanks guys, apprediate your replies. WICC advised this has been obsolete since 1999. Now I’m seeking a custom-made replacement. Thing is, we dont know the current for each secondary winding.
Whether or not try and pursue a replacement I would say the first thing to do is draw the transformer and its windings.
I see it says 36CT/20CT/8.0/24/24
You must draw each winding and see whether there are any common connections. For example a 36CT and 24CT could have common centre point (5 wires) or could be two totally floating windings (6 wires) with no continuity between the 36 and 24 volt winding. Same for all the others.
I see it says 36CT/20CT/8.0/24/24
You must draw each winding and see whether there are any common connections. For example a 36CT and 24CT could have common centre point (5 wires) or could be two totally floating windings (6 wires) with no continuity between the 36 and 24 volt winding. Same for all the others.
Appreciate your analyse and write up. I've got the photo of whole transformer, not too bad shape compared to the first photo.🙂 I would beef up to 25VA for each winding just to be safe.
Attachments
That is physically a small transformer and that size limits any VA rating. Measure it, weigh, compare it to other ordinary toroids of a similar size/weight to get an idea of what the max VA rating achievable might have been. Whatever figure you get would be divided up between all your windings.
As well as just drawing it out it would help any custom manufacturer to know the resistance of each secondary winding as that gives clues to the current delivery from that winding.
As well as just drawing it out it would help any custom manufacturer to know the resistance of each secondary winding as that gives clues to the current delivery from that winding.
I think the best you could do if you found somewhere that custom produces such things would be to ask if sending them the transformer to copy would help,
Again and just from a practical point of view: do you know for certain the DAC electronics work?
Something overloaded and burnt that transformer, not sure at all same won´t happen again when you reconnect the new tranformer, after a lot of time, effort and money spent.
Something overloaded and burnt that transformer, not sure at all same won´t happen again when you reconnect the new tranformer, after a lot of time, effort and money spent.
I know its been a while. But now I’m in the mood to make this item working again. I tried to contact some transformer manufacturer previously, but they wanted to know the exact current specs to be sure or to avoid to take responsibility from guessing which is fair. Just wondering if you guys know any company is capable to handle this?
Somebody else can suggest a rewinder but in any case I would definitely send them the original transformer, so they can measure each winding wire diameter with a micrometer.
Because that´s basically what their question boils down to.
Beware that such custom transformer winding may very well cost much more than a working DAC, new or used, there´s much more than physical winding work involved (which is already expensive for "just one"), I see hours calculating and back engineering the thing.
You are NOT giving them a blueprint but a problem to solve.
Because that´s basically what their question boils down to.
Beware that such custom transformer winding may very well cost much more than a working DAC, new or used, there´s much more than physical winding work involved (which is already expensive for "just one"), I see hours calculating and back engineering the thing.
You are NOT giving them a blueprint but a problem to solve.