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shenion
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Rewound would probably cost more than a new board (new board is £59.90)
A new transformer is probably under £10.
I don't know where to get a transformer on that side of the pond
Probably an 18V would be best the way the circuit is laid out.
A new transformer is probably under £10.
I don't know where to get a transformer on that side of the pond
Probably an 18V would be best the way the circuit is laid out.
Farnell have a range of transformers for pcb mounting, try a search here:
http://uk.farnell.com/
I'm not sure of the exact spec of your existing transformer, so best to enquire on here if this or that model would be suitable.
http://uk.farnell.com/
I'm not sure of the exact spec of your existing transformer, so best to enquire on here if this or that model would be suitable.
thanks kieth just had a look on there cant seem to find one but there again i dont really know what i am looking for :/ i found this but it says that the max output power is 15v what does the 2x15 mean
thanks for that link btw http://uk.farnell.com/clairtronic/10-5660/transformer-5-5va-230v-2-x-15v/dp/1504317
thanks for that link btw http://uk.farnell.com/clairtronic/10-5660/transformer-5-5va-230v-2-x-15v/dp/1504317
shenion
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2x15 means there are two 15V secondaries. They can be wired in series for 30V or in parallel for more current.
15V will give about 18V for the relay, might not be enough to hold teh relay.
That part the assignment of the pins is different and the spacing is probably different. Like I said, finding one that meets the physical layout is difficult.
You can use something like this: http://uk.farnell.com/pro-power/ctfcs6-18/transformer-6va-2-x-18v/dp/1780872
The mount it next to the board and wire it in.
15V will give about 18V for the relay, might not be enough to hold teh relay.
That part the assignment of the pins is different and the spacing is probably different. Like I said, finding one that meets the physical layout is difficult.
You can use something like this: http://uk.farnell.com/pro-power/ctfcs6-18/transformer-6va-2-x-18v/dp/1780872
The mount it next to the board and wire it in.
shenion
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Unless the transformer is marked, you have no idea what VA it is.
If you measure its dimensions, one of a similar VA will be about the same size.
There are no standards on pin locations, size or spacing on board-mount transformers. So, finding one that fits is near impossible.
The only thing it runs is the relay. That probably requires 2.4VA or less. The one I linked is 6VA so should run it with extra to spare.
If you measure its dimensions, one of a similar VA will be about the same size.
There are no standards on pin locations, size or spacing on board-mount transformers. So, finding one that fits is near impossible.
The only thing it runs is the relay. That probably requires 2.4VA or less. The one I linked is 6VA so should run it with extra to spare.
Don't know if 15v would be powerful enough to trip the relay. Probably. Maybe Scott could take a look at it if he's around, as he knows more about these than I do.
The '2x15' means it has two 15v outputs, -15v and +15v. You only need one output so far as I know.
There's an 18v output one here:http://uk.farnell.com/myrra/44197/transformer-3-2va-18v/dp/1689077
Basically the same but encapsulated I think, and with 18v.
Edit: Whoops, Scott's there already! You'll have to write up an how-to on this problem Scott, it seems to come up now and again with these small Clarkes.
The '2x15' means it has two 15v outputs, -15v and +15v. You only need one output so far as I know.
There's an 18v output one here:http://uk.farnell.com/myrra/44197/transformer-3-2va-18v/dp/1689077
Basically the same but encapsulated I think, and with 18v.
Edit: Whoops, Scott's there already! You'll have to write up an how-to on this problem Scott, it seems to come up now and again with these small Clarkes.
shenion
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2x15 is two separate 15V windings.
The is no +/- on AC. If you meant two 15V windings connected together, then it would be listed as "30V center-tapped" or 30VCT.
shenion
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No, it is just the maximum you can draw out of it before the transformer burns out. If you draw less, then it runs cooler.
One of the reasons these fail is the transformer is the minimum size and runs hot. The hotter things run, the shorter they last. The main reason is the wires are real thin and will corrode and break (notice rust on the transformer core.)
