Power Up ANYTHING With Old Cell Phone Chargers.

7,600

76

3

About: First DIY then ask WHY

Teacher Notes

Teachers! Did you use this instructable in your classroom?
Add a Teacher Note to share how you incorporated it into your lesson.

Green Electronics Challenge

Participated in the
Green Electronics Challenge

Gadget Hacking and Accessories Contest

Participated in the
Gadget Hacking and Accessories Contest

Share

    Recommendations

    • Indoor Lighting Contest

      Indoor Lighting Contest
    • Make It Fly Challenge

      Make It Fly Challenge
    • Growing Beyond Earth Maker Contest

      Growing Beyond Earth Maker Contest

    3 Discussions

    0
    None
    russ_hensel

    5 years ago on Introduction

    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.

    0
    None
    gmeadows3

    5 years ago

    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

    1 reply