Help me fix the electronics of a tig arc welder

[Milan-Sr]

I have a question!
I have to repair a TIG ARC WELDER,problem is that all electronics in it is totally damaged.
I wont to use phase cotrol with SIEMENS TCA785 on primary side off transformer.
If anyone hes any experience with thih plese leave here sugestions,it might help me.
Thanks Milan

 

[jzaghal]

how tca785 works

Hi,

It is easier to repair the unit.

Usually the hi voltage power section gets busted.

Explain the condition of the welder, maybe we can help.

Bye.

 

[Milan-Sr]

tig and pulse-tig datasheet

Hi,
All electronic was destroyed,so I need some sheme that works.
Thanks,Milan

 

[glenjoy]

welder help

I have a question!
I have to repair a TIG ARC WELDER,problem is that all electronics in it is totally damaged.
I wont to use phase cotrol with SIEMENS TCA785 on primary side off transformer.
If anyone hes any experience with thih plese leave here sugestions,it might help me.
Thanks Milan

Do not post in all caps.

 

[Milan-Sr]

serbian welder

Hi
Is this possibly?!

 

[IanP]

problems of arc welders

To control power SCRs it is better to use n:n pulse transformers, as per attached applications from the TCA785 data sheet; pages 15 and 16 ..
**broken link removed**

 

[Milan-Sr]

application for tca785

Hi
I have not experience with pulse transformers. How to make those transformers?
Milan

 

[José Luis]

Re: TIG ARC WELDER HELP!

Hi Milan,

To build a pulse transformer, wind 21:21 turn of magnetic wire 31 AWG on a ferrite toroidal core as this : https://www.allproducts.com/ee/bipolar/15.html