Transformer


  #1  
Old 01-19-14, 01:44 AM
T
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Transformer

Hello

I have some nichrome wire that I want to use.
I need 3V and 4A to get it to the right temperature.
What's the easiest and cheapest way to get these requirements?
It seems difficult to find a transformer with an output from 3V and 4A.

I live In Belgium so we have 230V
I would use the wire for sealing plastic bags.
I was thinking of using teflon tpfe to prevent the bag from sticking to the wire.
I read some different melting point of teflon. Some say 260C, other say 330C.
If I use 4Amps then the wire would heat up to 230C.
If I use 5Amps the wire would heat up to 310C.
On the other hand, It is just for a brief moment that the wire needs to be heated.
I don't know which temperature would be the best for sealing the bag.
I will use a constant heat sealing, not an impulse heat sealing

Thank you!
 

Last edited by thodesmet; 01-19-14 at 02:31 AM.
  #2  
Old 01-19-14, 05:06 AM
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I have a variable transformer on my hot wire cutter. With it I vary the voltage instead of trying to limit the current.

 
 

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