 Parallel Tank vs Serial Tank Induction Heater
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Paragon
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Thu Aug 12 2010, 03:24PM
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Registered Member #3007
Joined: Sat Jul 17 2010, 02:35PM
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Posts: 12
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Hello All,
If one was to embark on building an induction heater what topology would be recommended and why?
I have seen some sites that recommend series induction heater due primarily with the issues with using l-match networks
But then other sites recommend Parallel tank as they appear to be more robust and forgiving as well as easier to increase power by the addition of modular half-bridges. (RB's Site)
What is your preference and why?
Kind Regards,
SRG
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IamSmooth
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Registered Member #190
Joined: Fri Feb 17 2006, 12:00AM
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Posts: 1567
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I have found the series tank to be very easy. I had it heating nuts on the first shot. You need to make sure the capacitors can handle the voltage and current. All the tank needs is the capacitor and the coil (inductor).
See  for a full tutorial.
See for a video of a 2kw unit
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Paragon
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Registered Member #3007
Joined: Sat Jul 17 2010, 02:35PM
Location:
Posts: 12
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Thanks for the reply IamSmooth.
So far I have dabbled with parallel tank induction and am now thinking of converting it to series as it does not appear to be too much of a job.
How critical are the iron cores for the coupling?
The reason I ask is that I have been having trouble getting hold of type 3 cores but I did manage to buy some 157-26 (1.5inch type 27 cores) Im hoping these will suffice the frequency im looking at is between say 80-150khz.
Cheers
SRG
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