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Can I use a transformer to drop down the voltage from a generator? Or should I just use a regulator? The generator outputs about 9.3 V and I need about 5 V, and I want to conserve power.

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  • \$\begingroup\$ dropping voltage won't "conserve power". total power output won't change, except you'll waste some in the conversion. \$\endgroup\$ – kolosy Mar 31 '15 at 21:34
  • \$\begingroup\$ I want to waste the least amount of power in the conversion. Since I'm dropping the voltage can I get more current with a regulator? \$\endgroup\$ – Jucesanc Apr 1 '15 at 4:31
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Use a voltage regulator.

A switching voltage regulator will be the most efficient. Texas Instruments has a decent selection, just input the parameters you need.

A linear regulator would work too, but will not be as efficient as a buck topology.

A transformer will not work at all. Transformers are for alternating currents, not direct currents (AC vs. DC).

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I am guessing its DC. So a Transformer won't work. A Regulator will have to be used. Using a 7805 voltage regulator will do the trick. If you want to conserve power, I think you can also just use a switching regulator - Buck converter.

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The simplest way will be using a linear voltage regulator. I personally used LP2950 from Texas Instrument to drop from 9V to 5V. Goodluck.

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