Re: Resistor vs transformer


"Weinberger Hans" <weinberger@xxxxxxx> wrote in message
news:8evgu1p87j6b8tt4a51dddudkbbkliht1q@xxxxxxxxxx
Hi ... I need to convert 230V to 110V. I was wondering whether a 2.4K
resistor with the right power rating would be a more cost/space
effective solution versus a transformer. My load consumes 6 Watts.
What sort of resistor should I use? Wire wound? Carbon?

The 120Watt consumption of the resistor makes me uncomfortable. Are
there any cheap SMPS or light transformers that would work better?

Hans

The resistor would not take up much space but as you mention the heat would
have to be dissipated. Using a small dual voltage 230/110v transformer as an
auto transformer (the primary windings) is another option but would be more
bulky, however at 6watts it would not have to be very large in physical size
and would have the advantage of covering varying current requirements.

--
Regards ......... Rheilly Phoull




.

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