- #1
Umar Awan
- 7
- 0
Note: I have a feeling this is below Electrical Engineering requirements, but I couldn't find a more suitable category, so I think I'll extort the advantages of a forum base with electrical understanding more than I think may be required(ofcoarse I know very little about the field, so I may fall short first, knowledge wise).
Backstory: I have been planning to build a thin film deposition setup for coating my telescope lenses with aluminium. The Flash evaporation process requires a very high current and my whole setup has got me running short on my budget. I figure I could save a quite a bit of money if I cut out on that big high KVA transformer I have requested a quote for recently.
Question: What is it that forces electrical heater manufacturers to buy such high KVA transformers for a high current when the same amount of current could been drawn from a cheaper, small KVA transformer using more coils in the primary?
I figure coil losses would likely be the negligebely same either ways, so could it somehow possibly *fingers-crossed*be the physical limitation of fitting a high gauge coil in a small transformer(or a lot of primary coil)? Or is it because say, adding infinitely(very large) many primary windings may get to the point where resisitive losses in primary cost more than simply buying a transformer with more KVA? Or is it something to do with the transformer core?
I would also appreciate it if there are some formula's for calculating when its prefferable to stick to High KVA transformer, over adding a very large number of primary windings and increasing costs more than high KVA transformers possibly could.
Please don't get discouraged with the effort of teaching my V=IR if I have made some basic errors. Hehe, I may be worse. Also forgive my apologist overtone and head to the reply section
Thanks in advance.
Umar Awan
Backstory: I have been planning to build a thin film deposition setup for coating my telescope lenses with aluminium. The Flash evaporation process requires a very high current and my whole setup has got me running short on my budget. I figure I could save a quite a bit of money if I cut out on that big high KVA transformer I have requested a quote for recently.
Question: What is it that forces electrical heater manufacturers to buy such high KVA transformers for a high current when the same amount of current could been drawn from a cheaper, small KVA transformer using more coils in the primary?
I figure coil losses would likely be the negligebely same either ways, so could it somehow possibly *fingers-crossed*be the physical limitation of fitting a high gauge coil in a small transformer(or a lot of primary coil)? Or is it because say, adding infinitely(very large) many primary windings may get to the point where resisitive losses in primary cost more than simply buying a transformer with more KVA? Or is it something to do with the transformer core?
I would also appreciate it if there are some formula's for calculating when its prefferable to stick to High KVA transformer, over adding a very large number of primary windings and increasing costs more than high KVA transformers possibly could.
Please don't get discouraged with the effort of teaching my V=IR if I have made some basic errors. Hehe, I may be worse. Also forgive my apologist overtone and head to the reply section
Thanks in advance.
Umar Awan