Author Topic: Induction cooktops instead of MOT?  (Read 981 times)

Offline Downunder35m

  • High Voltage Enthusiast
  • *
  • Posts: 25
  • Karma: +1/-2
    • View Profile
Induction cooktops instead of MOT?
« on: July 28, 2018, 05:42:40 AM »
I did some reading on some possible hacks of induction cooktops.
With prices for single now low as every they even worth bying just to salvage parts.
But I was thinking of a different kind of hack.
All the hacks first aim on how start the thing without the buttons then how to heat some steel with it.

An induction cooktop checks if there really is a suitable pot on it before firing up at full power.
This basically is a check for the inductivity of the entire system being within the regulating range of the drive circuit.
We could create a transformer that meets similar requirements if we would have the right core material.
Luckily these things come with a bunch of identical ferrite blocks under the coil...
Creating a proper HV secondary coil for these frequencies can't be too hard.
If we could shape the provide ferrite blocks (if required) and use the existing litz wire to form a transformer we would have around 2000W available.
Output voltage would only be limited by transformer size and isolation qualities.

But I guess there will be a really good reason why noone tried this yet, just could not find it....

Offline Mads Barnkob

  • Administrator
  • High Voltage Expert
  • *****
  • Posts: 1260
  • Karma: +17/-0
  • Denmark
    • View Profile
    • Kaizer Power Electronics
Re: Induction cooktops instead of MOT?
« Reply #1 on: July 29, 2018, 11:06:43 PM »
Here is my quest to hack a induction cooltop: https://highvoltageforum.net/index.php?topic=104.0

and I am stuck in doing so, because these induction cooktops are much like the microwave ovens: built dirt cheap, pushes the single mains supply to the limit and are running on the brink of destruction.

So almost any little deviation from its design will destroy the single IGBT, as the the huge inductance the circuit needs to keep the current down is almost too much for any practical situation, unless perhaps to use it as a transformer driver as you suggest. I think I did try a huge ferrite core at some point, so just make it a transformer coupled induction heater, I blew up the IGBT :)

I could have built virtually any good half- / full-bridge inverter that would do a better job in half the time I spent looking at this unit, that is another nail in the coffin, I know that RogerInOhio managed to convert it into a Tesla coil, so maybe there is some information there for you: http://4hv.org/e107_plugins/forum/forum_viewtopic.php?180812

 
http://www.kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics

Offline Downunder35m

  • High Voltage Enthusiast
  • *
  • Posts: 25
  • Karma: +1/-2
    • View Profile
Re: Induction cooktops instead of MOT?
« Reply #2 on: July 30, 2018, 07:08:29 PM »
Seems I am not alone when it comes to destroy otherwise healthy induction cooktops LOL
So yes, the transformer attempt is because I am getting sick and tired of seeing them smoke if too much modified or out of specs.
Same for sticking with the driver part as it is.
Better to have the failsafe kick in too many times than constantly blowing things up.

Will have a look what I find on information before starting.
Thanks for the link!

High Voltage Forum

Re: Induction cooktops instead of MOT?
« Reply #2 on: July 30, 2018, 07:08:29 PM »

 


* Recent Topics and Posts

post Re: How can I make my driver better
[Solid State Tesla Coils (SSTC)]
Mads Barnkob
Today at 09:02:23 AM
post Re: DIY 250W LED Flood Light for High Speed Filming
[Light, Lasers and Optics]
Mads Barnkob
Today at 08:58:38 AM
post Re: Doorknob vs Ceramic Disk
[Voltage Multipliers]
davekni
Today at 05:33:22 AM
post Re: DIY 250W LED Flood Light for High Speed Filming
[Light, Lasers and Optics]
davekni
Today at 05:08:28 AM
post How can I make my driver better
[Solid State Tesla Coils (SSTC)]
Irido
Today at 04:45:06 AM
post Re: DIY 250W LED Flood Light for High Speed Filming
[Light, Lasers and Optics]
klugesmith
Today at 02:44:42 AM
post Re: HP T620 Thin Client - PSU Hack And Windows PC Modification
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
latethannever
Today at 01:58:48 AM
post Re: UV-cured cyanoacrylate glues?
[Light, Lasers and Optics]
Twospoons
February 17, 2020, 11:30:03 PM
post Re: DIY 250W LED Flood Light for High Speed Filming
[Light, Lasers and Optics]
Twospoons
February 17, 2020, 11:21:14 PM
post Re: DIY 250W LED Flood Light for High Speed Filming
[Light, Lasers and Optics]
Mads Barnkob
February 17, 2020, 10:45:52 PM
post Re: DIY 250W LED Flood Light for High Speed Filming
[Light, Lasers and Optics]
ElectroXa
February 17, 2020, 08:20:42 PM
post Re: DIY 250W LED Flood Light for High Speed Filming
[Light, Lasers and Optics]
Twospoons
February 17, 2020, 08:02:29 PM
post Re: DIY 250W LED Flood Light for High Speed Filming
[Light, Lasers and Optics]
Mads Barnkob
February 17, 2020, 08:02:15 PM
post Re: DIY 250W LED Flood Light for High Speed Filming
[Light, Lasers and Optics]
haversin
February 17, 2020, 04:26:10 PM
post Re: HP T620 Thin Client - PSU Hack And Windows PC Modification
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
Mads Barnkob
February 17, 2020, 01:44:41 PM
post Re: HP T620 Thin Client - PSU Hack And Windows PC Modification
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
latethannever
February 17, 2020, 11:18:33 AM
post DIY 250W LED Flood Light for High Speed Filming
[Light, Lasers and Optics]
Mads Barnkob
February 17, 2020, 10:58:17 AM
post Re: Doorknob vs Ceramic Disk
[Voltage Multipliers]
kilovolt
February 17, 2020, 08:55:30 AM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic Circuits]
petespaco
February 17, 2020, 06:00:59 AM
post Re: 230 volts spark gap
[Spark Gap Tesla Coils (SGTC)]
davekni
February 17, 2020, 03:59:59 AM
post Re: 230 volts spark gap
[Spark Gap Tesla Coils (SGTC)]
johnf
February 17, 2020, 03:19:32 AM
post Re: 230 volts spark gap
[Spark Gap Tesla Coils (SGTC)]
Quentief
February 17, 2020, 12:14:07 AM
post Re: 230 volts spark gap
[Spark Gap Tesla Coils (SGTC)]
Quentief
February 17, 2020, 12:10:28 AM
post Re: Saxophone controlled DRSSTC
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Mads Barnkob
February 16, 2020, 07:39:33 PM
post Re: WTB [EU]: Cellular Sector Antenna
[Sell / Buy / Trade]
Da_Stier
February 15, 2020, 03:25:10 PM
post Re: Doorknob vs Ceramic Disk
[Voltage Multipliers]
davekni
February 15, 2020, 05:41:13 AM
post kilovolt: website, youtube
[Hobby Sites]
kilovolt
February 14, 2020, 11:53:39 AM
post Re: Doorknob vs Ceramic Disk
[Voltage Multipliers]
kilovolt
February 14, 2020, 08:27:03 AM
post Re: Doorknob vs Ceramic Disk
[Voltage Multipliers]
davekni
February 14, 2020, 05:42:19 AM
post Re: Help with Van De Graaff Generator Build
[General Chat]
pianomanjcb
February 14, 2020, 03:29:37 AM
post Re: Help with Van De Graaff Generator Build
[General Chat]
haversin
February 14, 2020, 01:07:47 AM
post Re: Help with Van De Graaff Generator Build
[General Chat]
Mads Barnkob
February 13, 2020, 10:14:27 PM
post Re: Help with Van De Graaff Generator Build
[General Chat]
Teravolt
February 13, 2020, 09:16:47 PM
post Re: WTB [EU]: Cellular Sector Antenna
[Sell / Buy / Trade]
Mads Barnkob
February 13, 2020, 08:53:14 PM
post Re: Induction heater
[Electronic Circuits]
Quentief
February 13, 2020, 02:24:54 PM
post Re: Help with Van De Graaff Generator Build
[General Chat]
Mads Barnkob
February 13, 2020, 10:53:32 AM
post Re: Doorknob vs Ceramic Disk
[Voltage Multipliers]
kilovolt
February 13, 2020, 08:53:43 AM
post Re: Doorknob vs Ceramic Disk
[Voltage Multipliers]
davekni
February 13, 2020, 05:44:24 AM
post Re: NST
[Spark Gap Tesla Coils (SGTC)]
MRMILSTAR
February 13, 2020, 05:00:40 AM
post Re: NST
[Spark Gap Tesla Coils (SGTC)]
davekni
February 13, 2020, 03:57:38 AM
post Re: NST
[Spark Gap Tesla Coils (SGTC)]
Jun
February 13, 2020, 03:50:12 AM
post Re: Help with Van De Graaff Generator Build
[General Chat]
pianomanjcb
February 13, 2020, 03:42:49 AM
post Re: Doorknob vs Ceramic Disk
[Voltage Multipliers]
Andrew321
February 13, 2020, 01:51:14 AM
post Re: NST
[Spark Gap Tesla Coils (SGTC)]
profdc9
February 12, 2020, 05:56:29 PM
post 500 KW AM radio transmitter
[Radio Frequency]
MRMILSTAR
February 12, 2020, 05:05:53 PM
post Re: Help with Van De Graaff Generator Build
[General Chat]
haversin
February 12, 2020, 03:58:43 PM
post NST
[Spark Gap Tesla Coils (SGTC)]
Jun
February 12, 2020, 03:01:10 PM
post Re: Ok now I'm stuck ¯\_(ツ)_/¯
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
February 12, 2020, 05:29:38 AM
post Re: Microwave Oven Transformer
[Transformer (Iron Core)]
davekni
February 12, 2020, 04:56:19 AM
post Re: Help with Van De Graaff Generator Build
[General Chat]
pianomanjcb
February 12, 2020, 03:34:53 AM

Sitemap 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 
SimplePortal 2.3.6 © 2008-2014, SimplePortal