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inside an induction hob

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Douglas Johnston02/11/2018 13:53:52
666 forum posts
32 photos

img_0236.jpgimg_0234.jpgimg_0233.jpgI have just had to replace my induction hob (touch controls no longer worked - seems to be a common issue ) and the retailer I bought a new one from wanted a handful of cash to recycle the old one. Of course, being a cheapskate I declined the offer and decided to have a poke inside to see if there was anything worth salvaging for the workshop.

Printers and scanners are often mentioned as sources of useful bits, but as I discovered there are some very nice bits inside an induction hob. The electronic bits are big and beefy, there are two huge aluminium heatsinks and some nice sheet aluminium. The glass top looks useful but may not be perfectly flat and the large transistors (mosfets I presume ) look very nice.

So don't just give all this nice stuff to the retailer and pay for the privilege, recycle it to your workshop. Just noticed a couple of nice 12V fans.


Edited By Douglas Johnston on 02/11/2018 13:56:21

John Baron02/11/2018 15:05:39
146 forum posts
55 photos

I agree ! Why pay them money to make more money from your scrap !

There are a lot of very nice and useful components in a lot of the stuff that we have to pay to get rid of. The local scrapyard will gladly take this stuff of your hands for free, simply to survive.

The last lot of electronics scrap I took to the scrappy, I got £250 for 1/2 a ton. Mainly computer PCB's.

ega02/11/2018 15:06:15
1435 forum posts
115 photos

"touch controls no longer worked - seems to be a common issue"

That's what did for my microwave oven and at least one remote controller (although the latter can be fixed).

Samsaranda02/11/2018 15:28:23
824 forum posts
5 photos

I thought under the WEEE regulations that suppliers of electronic items were obliged to accept the item that was defunct and recycle it at no cost to the customer, perhaps I have misunderstood the parameters involved, anyway in this case of no relevance as Douglas has a supply of useful goodies from the redundant unit.

Dave W

Muzzer02/11/2018 16:20:54
2904 forum posts
448 photos

More likely to be IGBTs than FETs, same story in microwaves - usually but not always. IGBTs have a better current density than FETs in the silicon die, so you need less silicon to achieve the same switching capability. Bottom line is that they are more cost effective.


Douglas Johnston02/11/2018 18:18:38
666 forum posts
32 photos

I was wondering if some of the components could be used to construct an induction heater for heating small metal components to red heat. There are some designs on youtube, so I must check out the component values needed and see what I can salvage from the bits I now have.


Ian Hewson02/11/2018 19:22:50
259 forum posts
24 photos

Apparently the retailer must take back for free similar items, but can charge for transport if they collect them from you.

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