Question about transformers?

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i have 29-0-29 volts transformer. i'm from philippines. our voltage from outlet is 220v, but i have this large transformer with 100v labeled in the primary. can i use 110 to 220v converter?

one more question. i have this another transformer with black, green, yellow, white and red color leads. can you tell me what this color codes stand for?
 
picture.

here it is.

i think it is 110 to 220 volts converter. but the leads are confusing.
 

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Yes I would think you could stand to get a replacement for this transformer.
Look at where the wires are coming from....those holes in the four corners are suppose to have nuts & bolts squeezing the lamination stack together,
If you have a choice, get a true 220-110? step down transformer.....The bulk of the 'conversion transformers are what's called "Auto-Transformer"s.
Try to get a "true" transformer with both Primary and secondary windings, not the common windings of an Auto-Transformer.

__________________________________________________________Rick.......
 
You can use a 220v to 100v (and not the common 110 v out) auto transformer. If you are using it for audio (obviously since you're on DIY audio), consult the power rating of the audio product on the back label and note its power rating in watts. Your converting transformer should be larger than the rated consumption. Try getting a 100 v output converter if you can, doing math you will get approx 5-10% higher voltage on the secondary if you use the common 220 - to - 110 converter.
YOU CAN USE approx. 500- w converter to be safe.

PS. Don't use PC AVRs w/ 110v outlets they're for low wattage consumption only!
 
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