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Spare Kundo Coil

David Provan

Registered User
Jul 14, 2018
75
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79
Country
No, sorry, I don't have one. I need one in working condition. And I live in New Zealand, to make life more difficult.

My clock (see 'My New Kundo Electronic') turns out to have a great transistor, but two dud coils. It is one of the later single transistor, two coil types with a strong, yellow plastic coil former and no brass centre to the coil. I'd consider any type offered, though. If it was the later, single coil type I could make up the external circuitry.
A friend has offered to wind new coils for me, but I'd sooner not put anyone to that much trouble if there's an alternative.

I realise my chances are pretty slim, as there seem to be a lot more clocks around than serviceable coils. Still, if you don't ask .........

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Last edited:

sophiebear0_0

Registered User
Nov 5, 2012
154
45
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David

I'm sorry I can't offer a spare coil.

I have rewound a number of ATO /. Bulle coils. It actually sounds a lot more difficult than it is in practice. The capital outlay to get started is pretty cheap. I use a manual coil winder similar to the one pictured, and these are available for around 30 USD. I have only ever wound single coils, but as you say you could move your electronics to a pcb and use a single coil approach.

The main requirements are patience and the ability to use a soldering iron. The wire is rather thin and is easy to break. However you can noirmally get away with re-joining and carry on winding (you need to remove the insulating layer). Coil resistance isn't overly critical for the manually switched clocks, but I'm not sure about the transistor switched version. I'm sure other folks can advise.

You could also experiment my making up a replacement coil former. I use perspex tube and nylon washers. If nothing else, this should be a way to get up and running until you are able to source an original coil, or perhaps try to rewind your original coil.

Best regards,

Peter

coil 7.JPG Coil bobbin.JPG Coil winder.jpg
 

David Provan

Registered User
Jul 14, 2018
75
14
8
79
Country
Thanks, Peter. Those winders are available on line in NZ, but the postage cost is a lot more than the machine.
I am having my coil rewound, although it will take some time. Meanwhile I have finished off what I can till the coil returns. The top of our Bonheur du Jour is getting a bit crowded.

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