Introduction: Power Up ANYTHING With Old Cell Phone Chargers.

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russ_hensel made it! (author)2014-04-26

Actually you should not use the pot at all. It is inefficient, cannot supply much current, and does not regulate. Use a regulator or just stick to rated voltage. A pot should generally be used only for a fixed, know load, and after the revelant equations for power and voltage are checked.

author
gmeadows3 made it! (author)2014-04-25

You might find a 50ohm rather than 50kohm pot more effective and give wider control stability but as you stated a linear regulator would be far superior

author
ihemkes made it! (author)ihemkes2014-04-25

Correcto! i changed it. Thank you.

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