200W to 2000W induction hob £29.99 @ Maplin
Sulaiman, Tue Sept 08 2015, 12:38PMthis may interest some in UK, probably similar or better elsewhere,
So cheap someone may be tempted to use it as the primary of an sstc.
done before by others, but now cheap !
Re: 200W to 2000W induction hob £29.99 @ Maplin
Dr. Slack, Tue Sept 08 2015, 02:37PM
Anybody know what frequency do they tend to run at? They don't specify it, and I can't imagine that posting a question on their site will lead to much illumination.
Dr. Slack, Tue Sept 08 2015, 02:37PM
Anybody know what frequency do they tend to run at? They don't specify it, and I can't imagine that posting a question on their site will lead to much illumination.
Re: 200W to 2000W induction hob £29.99 @ Maplin
Sulaiman, Wed Sept 09 2015, 08:38AM
The only reference that I found after a quick online search ... 20 - 100 kHz
May also be of interest for wireless charging experiments etc.
(do not stuff 2 kW up your smartphone !)
Sulaiman, Wed Sept 09 2015, 08:38AM
The only reference that I found after a quick online search ... 20 - 100 kHz
May also be of interest for wireless charging experiments etc.
(do not stuff 2 kW up your smartphone !)
Re: 200W to 2000W induction hob £29.99 @ Maplin
Ash Small, Wed Sept 09 2015, 09:59AM
That would certainly make sense if these use IGBT's. Presumably frequency drops when 'loaded', and rises under no load?
Ash Small, Wed Sept 09 2015, 09:59AM
Sulaiman wrote ...
The only reference that I found after a quick online search ... 20 - 100 kHz
The only reference that I found after a quick online search ... 20 - 100 kHz
That would certainly make sense if these use IGBT's. Presumably frequency drops when 'loaded', and rises under no load?
Re: 200W to 2000W induction hob £29.99 @ Maplin
Conundrum, Wed Sept 09 2015, 12:56PM
£29 for an induction hob makes it useful for all sorts of applications, notably microwave/induction hybrids.
Just use a microwave with a porous Al base and a solid metal casing behind that for safety...
Conundrum, Wed Sept 09 2015, 12:56PM
£29 for an induction hob makes it useful for all sorts of applications, notably microwave/induction hybrids.
Just use a microwave with a porous Al base and a solid metal casing behind that for safety...
Re: 200W to 2000W induction hob £29.99 @ Maplin
Wolfram, Wed Sept 09 2015, 01:49PM
The ones I've seen usually run at between 20 and 30 kHz. The cheap ones like this usually use a single transistor topology, with a parallel resonant tank. For the transistor, they commonly use a single 1200 V IGBT. It's a bit sketchy but it works. The more expensive ones often use an IGBT half-bridge driving a series resonant tank circuit. This appnote from Fairchild gives a nice overview of the topologies .
Wolfram, Wed Sept 09 2015, 01:49PM
Dr. Slack wrote ...
Anybody know what frequency do they tend to run at? They don't specify it, and I can't imagine that posting a question on their site will lead to much illumination.
Anybody know what frequency do they tend to run at? They don't specify it, and I can't imagine that posting a question on their site will lead to much illumination.
The ones I've seen usually run at between 20 and 30 kHz. The cheap ones like this usually use a single transistor topology, with a parallel resonant tank. For the transistor, they commonly use a single 1200 V IGBT. It's a bit sketchy but it works. The more expensive ones often use an IGBT half-bridge driving a series resonant tank circuit. This appnote from Fairchild gives a nice overview of the topologies
.Re: 200W to 2000W induction hob £29.99 @ Maplin
Conundrum, Sat Sept 12 2015, 01:12PM
Might make quite a nice "tank" driver for ultrasonics.
Conundrum, Sat Sept 12 2015, 01:12PM
Might make quite a nice "tank" driver for ultrasonics.
Re: 200W to 2000W induction hob £29.99 @ Maplin
Cristian, Mon May 22 2017, 12:20AM
this can be useful, it's a analysis of a 1.8 kw induction heater hotplate
And this is the teardown of the same hotplate
Cristian, Mon May 22 2017, 12:20AM
this can be useful, it's a analysis of a 1.8 kw induction heater hotplate
And this is the teardown of the same hotplate
Re: 200W to 2000W induction hob £29.99 @ Maplin
Conundrum, Tue Jun 20 2017, 07:37PM
What happens if you "stuff 2KW up your smartphone"? Sounds like someone has to have tried this, just for the heck of it.
Conundrum, Tue Jun 20 2017, 07:37PM
What happens if you "stuff 2KW up your smartphone"? Sounds like someone has to have tried this, just for the heck of it.
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