den_zuk Posted December 14, 2009 Report Share Posted December 14, 2009 Please can anyone help me assemble this device that my son unfortunately broke (in searching for science ) ....it is some kind of 220 to 110 v converter (190 W), i draw a little picture how the components look like with their actual colors, there's no any labels on transformer or on the box (inside and outside). Maybe it is too easy for someone but for me its almost inhuman to resolve.Thank you. Quote Link to comment Share on other sites More sharing options...
Alex Tsekenis Posted December 14, 2009 Report Share Posted December 14, 2009 Hi,Could you please post a picture of the actual components?What is this exactly? I can't make much sense from the drawing. Did your 220 to 110 V converter break?Regards,Alex Quote Link to comment Share on other sites More sharing options...
awright Posted December 14, 2009 Report Share Posted December 14, 2009 I agree with Alex. Not much to go on from your sketch. Detailed photos AND a description of the device you are trying to repair would be very helpful.awright Quote Link to comment Share on other sites More sharing options...
Hero999 Posted December 14, 2009 Report Share Posted December 14, 2009 The normal way to do this is to use a transformer but you might be able to use a cheaper and more compact method depending on what you're doing.I agree with the others: your diagram doesn't make much sense and needs more detail. Quote Link to comment Share on other sites More sharing options...
den_zuk Posted December 15, 2009 Author Report Share Posted December 15, 2009 Ok boys, i agree that a photo will tell more so i make a fast shoot with phone and show you how it's look like.....on the box ( normal plastic box) there's no label , only one stamp - Made in China. Its not broken, only disassembled by my little son ( in searching for some interesting may be). The box was fully broken so i don't put it on the photo.On the photo in bottom corners are 220 v entry plug ( in left) and 110 V outlet in right .Upper left is normal 3A/250V AC switch and in right its transformer ( cables are :red blue blue ( and between first and after second blue there is an red and black cables that are connected directly to LED)).I'l be grateful if someone can help. Quote Link to comment Share on other sites More sharing options...
Hero999 Posted December 15, 2009 Report Share Posted December 15, 2009 It's an autotransformer.It has three connections, primary, secondary and neutral.Both the neutral for the input and output connect to the neutral.http://en.wikipedia.org/wiki/AutotransformerThe only trouble is you need to identify the different windings.My guess is that the middle is the secondary tap.You can confirm this using a DVM, the primary will have a higher resistance than the secondary. Quote Link to comment Share on other sites More sharing options...
den_zuk Posted December 16, 2009 Author Report Share Posted December 16, 2009 Thank you a lot, your guess was correct - the middle one was secondary tap. The red cable that going from 220 V plug through the switch was neutral ( for both first and secondary tap). Just right now is under load and working great, thank you again. Quote Link to comment Share on other sites More sharing options...
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