I recently had an AEG induction hob repaired and to fix the fault all the circuit boards were replaced. I'm fairly sure only one of them is faulty. I've attached a picture showing one power board and the control board.




As a result I have two boards each for driving two hob induction positions as well as a control board. I was looking at the boards thinking that I could use some of the components to make an induction heater when it occurred to me that the board is already a much more sophisticated induction heater than I could build so I have been wondering whether it would be possible to reuse the board. Unfortunately I have no idea of how they connect together and I would prefer not to use the control board.

What does anyone think of this idea?

Does anyone have any suggestions how to go about it?

Russell

 

I recently had an AEG induction hob repaired and to fix the fault all the circuit boards were replaced. I'm fairly sure only one of them is faulty. I've attached a picture showing one power board and the control board.


View attachment 328042

As a result I have two boards each for driving two hob induction positions as well as a control board. I was looking at the boards thinking that I could use some of the components to make an induction heater when it occurred to me that the board is already a much more sophisticated induction heater than I could build so I have been wondering whether it would be possible to reuse the board. Unfortunately I have no idea of how they connect together and I would prefer not to use the control board.

What does anyone think of this idea?

Does anyone have any suggestions how to go about it?

Russell

If the boards are functional then certainly. But unless you know which one is failed it might be a challenge. If you have service information for the heater machine that should be useful. I only noticed two low power connectors, but certainly yhere are high power input and output connections.
Getting the circuit will be the challenge. And you will probably need a power supply as well.
Or maybe not.

 

I recently had an AEG induction hob repaired and to fix the fault all the circuit boards were replaced. I'm fairly sure only one of them is faulty. I've attached a picture showing one power board and the control board.




As a result I have two boards each for driving two hob induction positions as well as a control board. I was looking at the boards thinking that I could use some of the components to make an induction heater when it occurred to me that the board is already a much more sophisticated induction heater than I could build so I have been wondering whether it would be possible to reuse the board. Unfortunately I have no idea of how they connect together and I would prefer not to use the control board.

What does anyone think of this idea?

Does anyone have any suggestions how to go about it?

Russell

Using induction hob components for an induction heater is a clever idea. How are you planning to handle the high-frequency switching for efficient heating? Any specific challenges you've faced so far with the control circuitry or coil design?

 

To repeat my self more clearly: It sounds like a very good idea! Developing a control scheme may be a bit tedious, depending on your skill set, but certainly possible.
It sounds like a very good recycling project!!

 

I worked with various HF induction heaters for some years, as a rule, the frequency Used by the heater depends on the size of the item required to be heated,.
e.g. Large steel plates used in a R.R. application used 60hz.
Small pipes silver-soldered/affixed to automotive gas tanks used ~450Khz.

 

Thank you both.

It seems that it's not a totally stupid idea.

It will be difficult though.

Each of the induction generators has it's own power supply on board - and there might be a clue there as to which one is faulty as I powered up the boards and the power supply output voltages are different.

There are ten connectors on each of the induction generators apart from the ones for the coil. Two of them are opto isolated. Two presumably power the LEDs marking the centre of the heating area, one is marked "fan". Only seven left to identify.

The control board has three edge connectors, two 4 pin and one 3 pin (I don't think they are double sided as there are vias through the board at the bottom of each contact).

I need to do some more research!

Russell

 

Certainly knowing how to use the boards is rather vital. N understanding of what had failed on the one will be useful, since it might be a simple thing subject to replacement. It could also be educational for those of us nt familiar with induction heating systems.

 

It would help to find out the operating frequency also!