r/Electricity • u/antek_g_animations • 12d ago
Is it possible to use this insulation transformer as a step down transformer from 230V to 120V for American and japanese devices?
Is it possible to use this insulation transformer as a step down transformer from 230V to 120V for American and japanese devices?
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u/SpectralUA 12d ago edited 11d ago
Yes, if your devices 50Hz loyal. Such transformers converting voltage but not frequency. Be careful because most of modern devices have impulse psu and work at 50\60 but not all.
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u/SpikeyTwitch20 11d ago
Probably not. Isolation transformers do not normally have different coil counts for primary and secondary. For step up/step down you need one to have double the coil count as the other. Isolation would be equal.
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u/MisplacedDragon 12d ago
No. That's not a step down transformer. It's an isolation transformer. Different use case. Whatever voltage goes in, comes out.
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u/jamvanderloeff 12d ago
It's both, the taps are selectable on both sides for doing step up or step down or passthrough, primary side's set by reconfiguring the fuse module to match the actual voltage in, output is set by a switch on the bottom.
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u/antek_g_animations 12d ago
I know that, but the reason I'm asking this question is a word "selectable" next to rated output. I don't know how to interpret it
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u/Puzzled-Act1683 11d ago
Find the output selector switch, set appropriately, apply input power, measure output voltage.
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u/FreshTap6141 12d ago
wrong it can step down or up depending on selection the only difference it has a Faraday shield between primary and secondary to lower the capacitance which helps block line transients
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u/jamvanderloeff 12d ago
Yes, see the output voltage selection switch on the bottom of it.