This question might do in the context.
I have this 220V -> 110V 1000W stepdown. Could I reverse it?
Regards
I have this 220V -> 110V 1000W stepdown. Could I reverse it?
Regards
yup
but , due to construction (secondary turns correction, to prevent losses) , do not expect same ratio as when used in 220>110 arrangement
just test it
but , due to construction (secondary turns correction, to prevent losses) , do not expect same ratio as when used in 220>110 arrangement
just test it
What about 220V -> 110V windings and see what I get on the other side? Thats the real question? Do I get +400V with half the power rating?
Regards
So no problems that the outer winding becomes the primary and the inner winding is the secondary?
Regards
Sorry for highjacking this thread - I'm done if the next answer makes sense as the ones I got so far. If more explanations is/are needed please tell me and I start a new thread.
Regards
'Halogen' bulbs are incandescent and are still available here; perhaps not where you live.
Some of your friends undoubtedly 'stocked up' on incandescent bulbs before they were pulled from the market - I did. 😀 Check with them!
A 'dim bulb tester' is an important (safety) tool - do your best to make and use one is my advice.
Those anti-incandescent regulations made sense in California where the 'waste' heat was pumped out of the house by air conditioning. In Canada, where lights are used mostly in the winter, and houses are generally heated by burning fossil fuels, that 'waste heat' from bulbs was put to good use.
And your explanation is??
Pontifical statements are all very well, but...
Are you saying that the 220 volt winding wire insulation cannot stand 440 volts, or.....
my explanation is same as for 10T trailer not likely enduring 20T of weight
it simply isn't constructed for that
or you think that winding voltage declaration is there just for fun?
you can fed winding with lower voltage than declared , but feeding it with higher is certain recipe for fire in the house
learn something about xformer functioning , then you'll understand that xformer is apparatus , not few resistors cobbled together
So 10T and 20T is the voltage without any concerns to current? I do understand that there might be a problem with insulation and maybe heat if I go over 500 W.
Regards
you can't use 110V winding on 220V mains voltage.
it is not issue of insulation
it is issue of current through winding , resulting in excessive heat, resulting in flame
to understand that , find mains xformer construction tutorial , web is full with them
it is not issue of insulation
it is issue of current through winding , resulting in excessive heat, resulting in flame
to understand that , find mains xformer construction tutorial , web is full with them
Well, actually, (I think) your explanation is treating the windings just like resistors...the 115 volt winding will be carrying 2x the current if you put 230v across it, and will overheat?
feel free to try , and inform us what happened
take all precaution measures - do that out of house , keep clearance , touch only insulated mains cable plug
> 220V -> 110V
Then why is it called a "110V" winding?
Because if you apply 110V no-load the self-inductance allows only a very low current. If you apply 125V, the iron core starts to saturate and the no-load current goes much higher. At 140V the core is saturated a large part of the cycle, NO significant inductance, "infinite" current.
Another example: the US favors 115V-125V power. Parts of Japan use 100V power. People bring Japanese 100V electronics back to the US. Sometimes they work, or work but run very hot. Sometimes they smoke in the first hour.
No, do not apply more than rated voltage to a transformer winding. The winder knows that "wall voltage" varies, and a "110V" winding will probably take my 125V. But voltage capability is a real cost. They do not give you much extra.
Then why is it called a "110V" winding?
Because if you apply 110V no-load the self-inductance allows only a very low current. If you apply 125V, the iron core starts to saturate and the no-load current goes much higher. At 140V the core is saturated a large part of the cycle, NO significant inductance, "infinite" current.
Another example: the US favors 115V-125V power. Parts of Japan use 100V power. People bring Japanese 100V electronics back to the US. Sometimes they work, or work but run very hot. Sometimes they smoke in the first hour.
No, do not apply more than rated voltage to a transformer winding. The winder knows that "wall voltage" varies, and a "110V" winding will probably take my 125V. But voltage capability is a real cost. They do not give you much extra.
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