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OfflineMushyMay
Brian Eno is mypersonal God FNORD

Registered: 02/19/02
Posts: 423
Loc: ACT, Australia
Last seen: 7 years, 7 months
Simple electronics question
    #1437429 - 04/07/03 10:13 PM (13 years, 8 months ago)

I have a fan that I want to run from a 9v battery. How can I stop the battery from going flat so quickly?


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MushyMay is a fictional character, as a result any information provided by MushyMay is also fictitious.


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OfflineSeussA
Error: divide byzero

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Registered: 04/27/01
Posts: 23,480
Loc: Caribbean
Last seen: 29 days, 12 hours
Re: Simple electronics question [Re: MushyMay]
    #1439999 - 04/08/03 06:34 PM (13 years, 8 months ago)

Get a fan that requires less power to run, or use a 9V ac adapter to run the fan and ditch the battery.

Edit: If you want to get really fancy, you would use pulse width modulation, depending upon your fan of course, to gain more life out of the battery. Do a search on pulse width modulation and brushless DC motor controllers for some insight. My guess is that this is more work than you are wanting.


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Edited by Seuss (04/08/03 06:36 PM)


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