Can a Transformer Be Converted into a Welder Transformer?

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Discussion Overview

The discussion revolves around the conversion of a transformer into a welder transformer, focusing on the necessary modifications and considerations for achieving the desired output voltage and current for welding applications. Participants share their experiences, technical details, and challenges encountered during the process.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants inquire about the specific conversion process required to transform a standard transformer into a welder transformer.
  • One participant mentions the input voltage of their transformer is 220V with outputs of 108V and 58V, noting that the 58V output lacks amperage.
  • Another participant warns about the dangers of creating a welder from a transformer, emphasizing the need for experience in electronics.
  • A participant reports having completed their welder but is experiencing issues with an input voltage of 143V.
  • Several participants discuss the specifications of their transformers, including input and output voltages, and modifications made such as adding a bridge rectifier and capacitors.
  • One participant suggests a method to achieve a secondary output of approximately 73V by reconfiguring the transformer coils, while also cautioning about the high voltage and potential current limitations.
  • Another participant asks if it is possible to use a rheostat to lower the output DC voltage to around 50V.
  • Participants share updates on their progress, with one noting improved voltage readings after following guidance from others.

Areas of Agreement / Disagreement

There is no clear consensus on the best method for converting the transformer, as participants present various approaches and experiences, leading to multiple competing views on the conversion process and safety considerations.

Contextual Notes

Participants express uncertainty regarding the exact specifications and limitations of their transformers, including the effects of modifications on output voltage and current. Some technical details are not fully resolved, such as the implications of changing coil configurations and the expected performance of the welder.

Who May Find This Useful

Individuals interested in DIY electronics, particularly those looking to convert transformers for welding applications, may find the shared experiences and technical discussions beneficial.

Redio
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Hello can anyone how to convert this transformer in a welder transformer
20190409_193551.jpg
 
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20190409_193824.jpg
 
Redio said:
Hello can anyone how to convert this transformer in a welder transformer
Convert it to what?
 
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In a welder transformer
 
Hello Mr radio
That's ok, well explanation about what do to use it?
 
I need this transformer to make a welder the input voltage is 220v and the output is 108v and58 v but in 58 volt is has no amperage
 
May I ask what experience you have with electronics because creating a welder with a transformer can be quite dangerous. I haven’t done it but I have learned about the danger when I wanted to make one.
 
I finished the welder but i have somme issues on the input voltage is to height is 143 volt
 
  • #10
I have both practical and theoretical experience on welder stuff.. So I need to ask you some question about your present transformer
 
  • #11
Adiel Samson said:
I have both practical and theoretical experience on welder stuff.. So I need to ask you some question about your present transformer
Thnx .my transformet is 220v input and 140 v out pu
 
  • #12
Redio said:
Thnx .my transformet is 220v input and 140 v out pu
I have also putet a bridger rectifier
1PCS-FUJI-6RI75E-080-6RI75E080-Module-New-100-Best.jpg

And 2 condesatorss 4700uf 450 volt
 
  • #13
Redio said:
Thnx .my transformet is 220v input and 140 v out pu
On the contrary your transformer is 220/110 step down/step up. It has 4 block of coils.. Each with voltage rate of approximately 55V ... Therefore with this parameters you can only have secondary output of minimum 73V.. By taking 3 block and put them in series and also isolating the 4th coil connection to be the secondary... You will have 220V input 73V output and probably 20-30% duty cycle.. What can u weld with this high voltage of 73V care must be taking operating with such high voltage.. And remember the current might be lower than expected.. You can increase that by changing the secondary winding with a 2X size of the original coil and half the turns then you will get 2* your current and the voltage drod to half.(31.5V) thanks
 
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  • #14
Thnx for the advice
 
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  • #15
This is look like
 

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  • #16
I hawe 145dc in output is possible to put a rheostat to lower the dc to +/- 50 volt
 

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  • #17
Or more
 
  • #18
Please make your connection like this
 

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  • #19
Ok thnx
 
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  • #20
Much beter now 75 volt an 80volt on the other core thnx
 
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  • #21
Thanks for understanding my guide
 
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  • #22
The OP question has been well answered. Thread closed.
 

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