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Question about step-down transformers.
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<blockquote data-quote="shorai" data-source="post: 1119077" data-attributes="member: 24498"><p>I would open them up and have a look. </p><p>At that time most equipment for the international market either had transformers or swithing power supplies that could be configured for 110 or 220 volts.</p><p></p><p>For transformers, this was by having two bifilar windings that were either in parallel or series. </p><p></p><p>For switching power supplies there was often a switch that changed voltage. By running 220V into a 110V setting you will likely overheat and burn out some components. Remember doule the voltage is 4 times the power.</p><p></p><p>The switch was often internal and set at the factory, the equipment then being marked accordingly.</p><p></p><p>Of course, being Asian, the emphasis on cost cutting often meant that two very different components were installed for the 110V and 220V markets.</p></blockquote><p></p>
[QUOTE="shorai, post: 1119077, member: 24498"] I would open them up and have a look. At that time most equipment for the international market either had transformers or swithing power supplies that could be configured for 110 or 220 volts. For transformers, this was by having two bifilar windings that were either in parallel or series. For switching power supplies there was often a switch that changed voltage. By running 220V into a 110V setting you will likely overheat and burn out some components. Remember doule the voltage is 4 times the power. The switch was often internal and set at the factory, the equipment then being marked accordingly. Of course, being Asian, the emphasis on cost cutting often meant that two very different components were installed for the 110V and 220V markets. [/QUOTE]
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DIY & Tutorials
DIY For Audio
Question about step-down transformers.
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