We have an old Induction Heater machine, It has been stop working, It has a strange electronic component which no one can specify it.
Thanks in advance for your help

 

Its a plate type capacitor?

 

Its a plate type capacitor?

Are You asking or telling, But what about ther rest of components

 

The big round blue thingy is a HV capacitor.

 

example
http://www.anxoncap.com/333-ccg81-20kv5000pf-150kva-rf-power-ceramic-capacitor.html

 

and what about that cylindrical white/red thing??

 

It is a HV capacitor, as tothers have mentioned. It is labeled 2000 pF (2 nF)


John

 

As for that big round thing, how is it wired to the capacitor and coil?

John

 

I guess that big round thing on the left is the PSU and metal case on right contains water pump for cooling the coils.

 

I guess that big round thing on the left is the PSU

What is PSU stands for??

 

Power supply unit

 

and what about that cylindrical white/red thing??

Since I have seen similar, I would bet it's the cooling tower for a transmitting tube.

http://www.tubeampdoctor.com/en/sho...bes_HiFi_Triodes_Transmitting_Tubes/833C_1342

You might find a differential pressure switch that detects cooling.

Similar, not exact, http://www.engineeringradio.us/blog/2010/06/filament-voltage-management/

Edit: I should not say seen, but I pretty much left one alone when I worked on the power supply. The other fell out of it's socket during shipping, so I guessed, I put hat one back in. I also felt the "no fingerprint" rule was valid.

 

Your blue thing: http://www.mouser.com/ds/2/427/p70p100p140p200-537159.pdf

 

Agree, It could also be a high voltage triode as many of these older H.F. induction heaters used for an oscillator.
The top connections could be the filament?
Max.

 

Max is correct its a HV triode.

 

Agree, It could also be a high voltage triode as many of these older H.F. induction heaters used for an oscillator.
The top connections could be the filament?
Max.

thanks for reply
then is it better to be replaced by IGBTS or searching for this "triode"??

 

Probably the chances of getting an exact replacement is going to be remote.
Is the unit not working now? If so what trouble shooting has been done?
What is it using for rectification?
What is the final function it performs or used for?
Max.

 

Is the unit not working now? If so what trouble shooting has been done?
What is it using for rectification?
What is the final function it performs or used for?

the unit is not working, technician checked it and told us that part is not working, but no troubleshoots performed as it was a "black box" for us.
machine is used as induction heater "specially annealing"

 

Unless you wish to prematurely remove yourself from the gene pool, I seriously suggest you leave it alone.
The voltages that are present and the R.F energy produced should it fire up will kill or seriously burn you.
Specialist training is required to safely work on such equipment, and without it you are likely to wind up dead!!

 

thanks for reply
then is it better to be replaced by IGBTS or searching for this "triode"??

If its a thermionic tube, converting to solid state is pretty much a redesign from the ground up job.

The Russians still produce plenty of transmitter type tubes - if its a triode; selecting a suitable substitute shouldn't be all that difficult.

The lack of info from the guy that (allegedly) diagnosed it - was probably because he was too terrified to mess with the high voltage/current in a RF induction heater with enough power to anneal metal.