need help igbts welder

[Ignoramus21252]

yes i am trying to make a inverter welder i have a stick welder and
have 4 diodes on it to get dc with 2 big cap, and did up a HF starter
for it and have a tig torch and have done some welding with it but the
HF starter will not work with the welder on ac and i have the igbts i
did up a foot pedal that turns on gas and the HF starter......
i need to get this done becoz 30amps will go throu sheet metal
and i like doing this
and hears the site that has the circuit for this
http://www3.telus.net/public/a5a26316/TIG_Welder.html
he has more work and can not get to emails a lot of the time and i did
email him and got some info but he does not have much time!!!!!!!!!!!!!!

Do you have an AC stick welder? Like a buzzbox? Is that right?

What kind of HF unit do you have?

i

 

[Ignoramus21252]

forgot this i did have in mind to use the monolithic function generator
XR-2206 but i found that circuit and plan to use it and it will give me
what i need

XR-2206 is very easy to use and does exactly what I wanted. (variable
frequency with SEPARATELY controlled duty cycle).

i

 

[Ignoramus21252]

plus it would cost 1.082.00$$ for a tig welder that would not weld
Aluminum
tig for aluminum would cost 1,338.00$$
cost so far
welder free

What's the welder?

tig torch witch is water cooled 60.00
igbts 40.00
caps and neon transformer 15.00
4 diodes 400 amps 20.00
foot pelal made it

Well, all that doodads and little thingies are going to add up
significantly, espoecially when they start blowing up and need to be
replaced.

I am not trying to dissuade you from your project, I am doing
something very similar myself, just want to share my experiences.

I do have money to blow (and try to finance my activities by reselling
stuff on ebay rather than tap into family finances), but, making AC
square inverter was not a very cheap project.

i

 

[kidkv]

What's the welder?


Well, all that doodads and little thingies are going to add up
significantly, espoecially when they start blowing up and need to be
replaced.

I am not trying to dissuade you from your project, I am doing
something very similar myself, just want to share my experiences.

I do have money to blow (and try to finance my activities by reselling
stuff on ebay rather than tap into family finances), but, making AC
square inverter was not a very cheap project.

i

yes i do have buzzbox 30amps to 225amps and have done welding with it
and the HF box was made from a circuit from yahoo boards it is just
like a tesla coil so i no that ot is safe becoz i have bulit a tesla
coil and i have been welding with the tig torch for 1 year now the way
i have it
and how did you like the web site that i put up ??????? and all of it
to build it does not cost much

 

[kidkv]

yes i do have buzzbox 30amps to 225amps and have done welding with it
and the HF box was made from a circuit from yahoo boards it is just
like a tesla coil so i no that ot is safe becoz i have bulit a tesla
coil and i have been welding with the tig torch for 1 year now the way
i have it
and how did you like the web site that i put up ??????? and all of it
to build it does not cost much
the welder is an ac buzzbox that now setup for dc and it cost me not a
thing it was free
and i also have a carbon arc thoch thats how this all started from...
and i have a pland to build a plasma cutter 4 diodes to igbts to HF box
to torch that is just some thing to think about

 

[Ignoramus11409]

yes i do have buzzbox 30amps to 225amps and have done welding with it
and the HF box was made from a circuit from yahoo boards it is just
like a tesla coil so i no that ot is safe becoz i have bulit a tesla
coil and i have been welding with the tig torch for 1 year now the way
i have it
and how did you like the web site that i put up ??????? and all of it
to build it does not cost much
the welder is an ac buzzbox that now setup for dc and it cost me not a
thing it was free
and i also have a carbon arc thoch thats how this all started from...
and i have a pland to build a plasma cutter 4 diodes to igbts to HF box
to torch that is just some thing to think about

So, how does the stuff work now? I am a little confused. Does it weld
well? Usually, TIG welding requires higher open circuit voltages than
seen on buzzboxes. Are your arcs good? What about your HF unit?

I am not sure what website you are referring to, I would love to look
at your website if you have one.

i

 

[kidkv]

So, how does the stuff work now? I am a little confused. Does it weld
well? Usually, TIG welding requires higher open circuit voltages than
seen on buzzboxes. Are your arcs good? What about your HF unit?

I am not sure what website you are referring to, I would love to look
at your website if you have one.

i

yes it does weld real good for a 220volt welder... open circuit voltage
is 90v to 120v..
the HF unit works on dc only but it "will not work on ac" has some
thing to do with the HF
unit being 120Volt and the welder being 220volt.. the HF unit will
start at 30 amps and the welder has a high side and a low side on the
out put..
this was the site http://www3.telus.net/public/a5a26316/TIG_Welder.html

and i do paln on puting up a site as soon as i get it done ....
and the caps would get hooked up to G2 and E2 on the igbts they are the
same that you
did your first setup with MG200Q2YS40

the site has the circuit that iam useing.
the datasheet for the IR2110 does not have that much to go on :-((

 

[kidkv]

yes it does weld real good for a 220volt welder... open circuit voltage
is 90v to 120v..
the HF unit works on dc only but it "will not work on ac" has some
thing to do with the HF
unit being 120Volt and the welder being 220volt.. the HF unit will
start at 30 amps and the welder has a high side and a low side on the
out put..
this was the site http://www3.telus.net/public/a5a26316/TIG_Welder.html

and i do paln on puting up a site as soon as i get it done ....
and the caps would get hooked up to G2 and E2 on the igbts they are the
same that you
did your first setup with MG200Q2YS40

the site has the circuit that iam useing.
the datasheet for the IR2110 does not have that much to go on :-((

LOOKED on welder shorted 30v 25v open 80v but that whent up with the
diodes on it and it is a single phase 220volt
and the cap that i have on it are 2400uf 450volt and ther are 2 of them
for 4800uf could not use tig with out them...

 

[Ignoramus11409]

yes it does weld real good for a 220volt welder... open circuit voltage
is 90v to 120v..
the HF unit works on dc only but it "will not work on ac" has some
thing to do with the HF
unit being 120Volt and the welder being 220volt.. the HF unit will
start at 30 amps and the welder has a high side and a low side on the
out put..
this was the site http://www3.telus.net/public/a5a26316/TIG_Welder.html

and i do paln on puting up a site as soon as i get it done ....
and the caps would get hooked up to G2 and E2 on the igbts they are the
same that you
did your first setup with MG200Q2YS40

the site has the circuit that iam useing.
the datasheet for the IR2110 does not have that much to go on :-((

LOOKED on welder shorted 30v 25v open 80v but that whent up with the
diodes on it and it is a single phase 220volt
and the cap that i have on it are 2400uf 450volt and ther are 2 of them
for 4800uf could not use tig with out them...

Sounds very interesting. Would love to see your welds and setup.

i

 

[kidkv]

Sounds very interesting. Would love to see your welds and setup.

i

i will try to get a web page up as iam doing this
so what do you think of that guys setup ????

 

[Ignoramus8339]

i will try to get a web page up as iam doing this
so what do you think of that guys setup ????

I am not completely sure that he has a finished working welding
machine. I did not see any pictures of his welds. I have insufficient
expertise to say whether it is a good or bad setup.

Myself, I have a little bit different philosophy, due to my own much
more limited expertise compared to him. I do not try to reinvent the
wheels and I try not to use any dumpster components (MOTs). Hence, my
use of off the shelf equipment like a firing board and existing
3 phase welder, microcontroller instead of relay schematics, etc.

I have a welder now that is working, in a limited sense, but it makes
pretty cute stick weld beads.

i

 

[kidkv]

I am not completely sure that he has a finished working welding
machine. I did not see any pictures of his welds. I have insufficient
expertise to say whether it is a good or bad setup.

Myself, I have a little bit different philosophy, due to my own much
more limited expertise compared to him. I do not try to reinvent the
wheels and I try not to use any dumpster components (MOTs). Hence, my
use of off the shelf equipment like a firing board and existing
3 phase welder, microcontroller instead of relay schematics, etc.

I have a welder now that is working, in a limited sense, but it makes
pretty cute stick weld beads.

i

i have sent him emails on it and he has been nice on alot of the things
that i have asked
him on. and looking at the datasheets on the ic chips i can see how it
works and i can not get the stuff to program pic chips!! I dont like
them that much becoz programing is something that i do not
get!!!!!!!!!!!

 

[Ignoramus8339]

i have sent him emails on it and he has been nice on alot of the things
that i have asked
him on. and looking at the datasheets on the ic chips i can see how it
works and i can not get the stuff to program pic chips!! I dont like
them that much becoz programing is something that i do not
get!!!!!!!!!!!

Yes, definitely, he is nice and knowledgeable.

As far as programming, I chose this device as the controller:

http://cubloc.com/product/03_02cusb22r.php

You can see how it looks on my control board:

http://igor.chudov.com/projects/Welding/11-New-Rectifier/panel-0.jpg

here's my source code (in progress):

http://igor.chudov.com/projects/Welding/11-New-Rectifier/source.txt

I am a computer programmer, so I write code all day long.

The relays click at appropriate moments (based on "faking of inputs").

i

 

[kidkv]

Yes, definitely, he is nice and knowledgeable.

As far as programming, I chose this device as the controller:

http://cubloc.com/product/03_02cusb22r.php

You can see how it looks on my control board:

http://igor.chudov.com/projects/Welding/11-New-Rectifier/panel-0.jpg

here's my source code (in progress):

http://igor.chudov.com/projects/Welding/11-New-Rectifier/source.txt

I am a computer programmer, so I write code all day long.

The relays click at appropriate moments (based on "faking of inputs").

i

thats nice BTW how much did it cost??? that is the big thing for me you
would think that
the price on the stuff would go down but not much from what i have
seen. And i just like doing this stuff with my hands. i just cant sit
at a computer all day i have to get up and do stuff!!!!!!!!!! i have
been thinking about get a programer but they just cost to much.
one thing i can do that is to fix windows xp if it gives me a problem
by useing ms dos and i can delete files that wont let you delete them
out

 

[Ignoramus31846]

thats nice BTW how much did it cost???

IIRC, the controller cost $102.50, plus some amount for the LED
display.

that is the big thing for me you would think that the price on the
stuff would go down but not much from what i have seen. And i just
like doing this stuff with my hands. i just cant sit at a computer
all day i have to get up and do stuff!!!!!!!!!! i have been
thinking about get a programer but they just cost to much. one
thing i can do that is to fix windows xp if it gives me a problem by
useing ms dos and i can delete files that wont let you delete them
out

For me, I also planned on just using a bunch of relays, time delay
relays etc.

Then I realized that I do not yet know the details of some welding
processes such as MIG and plasma cutting. Plus, I realized that it
would be nice to have some features like pulsed TIG, etc.

With a microcontroller, making changes and implementing these features
amounts to simple programming in BASIC. Whereas with relays, it is a
major undertaking to make any changes.

i

 

[kidkv]

IIRC, the controller cost $102.50, plus some amount for the LED
display.


For me, I also planned on just using a bunch of relays, time delay
relays etc.

Then I realized that I do not yet know the details of some welding
processes such as MIG and plasma cutting. Plus, I realized that it
would be nice to have some features like pulsed TIG, etc.

With a microcontroller, making changes and implementing these features
amounts to simple programming in BASIC. Whereas with relays, it is a
major undertaking to make any changes.

i

you will like this he sad that he put in time delay relays for the
stuff to come up to temp and i do not see how that could be.. temp
should not be problem when you see pepole use it out side???? and how
long of a time should you wate for it to come up to temp????

on this note i have fixed some stuff like 2 tv's 13" and a 26" the 13"
has a bad ic chip in it
and the 26" had a bad cap.. two motherboards that had bad caps the
caps in the boards
whear esey to see shit they came out with a pull. and one guy that
builds computers sad that repalceing the would not work.

 

[Ignoramus23532]

you will like this he sad that he put in time delay relays for the
stuff to come up to temp and i do not see how that could be.. temp
should not be problem when you see pepole use it out side???? and how
long of a time should you wate for it to come up to temp????

on this note i have fixed some stuff like 2 tv's 13" and a 26" the
13" has a bad ic chip in it and the 26" had a bad cap.. two
motherboards that had bad caps the caps in the boards whear esey to
see shit they came out with a pull. and one guy that builds
computers sad that repalceing the would not work.

I am sorry, I did not understand what you wrote.

i

 

[kidkv]

I am sorry, I did not understand what you wrote.

this is what he sad "" which simply put allows a few seconds for the
various power
supplies and TTL chips to normalize and become stable before the rest
of the
circuitry can be activated, so erronious state conditions can be
avoided on
the control board.""

that should help