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Prahlad J. Purohit
07/27/05 08:40
Read: 1152 times

#98283 - 400V 100A
Responding to: Erik Malund's previous message
Dear Erik,

Thanks for your reply,

isn't a weld basically a short? It looks that way to me. So, how will you maintain 400V?

You are right Resistance weld is essentially a short. This 400V is not applied to electrodes. It is fed to welding transformer which drops the voltage down to 4 to 10 Volts. This 4 to 10 Volts is applied to electrodes [ short ]. The currents flowing are of the order of several ten thousand amps through this short.

I am trying to develop a higher freqency power supply for feeding my welding transformers. The advantage of higher frequency is..
1. Smaller transformer size and weight less core required.
2. Smaller cycle interval gives better heat control.
3. Suitable for welding small delicate parts.

Thanks & Regards,
Prahlad Purohit

List of 18 messages in thread
High Power High Frequency.      Prahlad J. Purohit      07/26/05 22:00      
   high voltage high frequency      Terry Lingle      07/26/05 23:16      
      Similar ?      Steve M. Taylor      07/27/05 02:27      
      Capacator?      Prahlad J. Purohit      07/27/05 02:44      
         Take one apart      Steve M. Taylor      07/27/05 03:37      
            SCR's      Prahlad J. Purohit      07/27/05 07:53      
            Big Caps      Kashyap Deepak      08/06/05 14:45      
   isn't a weld basically a short?      Erik Malund      07/27/05 08:24      
      400V 100A      Prahlad J. Purohit      07/27/05 08:40      
         Big caps      Terry Lingle      07/27/05 09:19      
         Inverter      Steve M. Taylor      07/27/05 09:43      
            Yes they are similiar      Terry Lingle      07/27/05 11:50      
               not ip infringing      Steve M. Taylor      07/27/05 12:19      
                  ip      Terry Lingle      07/27/05 12:26      
                     Nah      Steve M. Taylor      07/27/05 13:04      
         High current      Stuart Hall      08/10/05 06:33      
            Spot the welder      Steve M. Taylor      08/10/05 07:02      
            Re: High Current.      Prahlad J. Purohit      08/10/05 08:49      

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