Power fan every x-seconds for x-amount of time - Electronic Circuits Projects Diagrams Free

Alex101 · 22nd February 2008, 11:16 AM

Hi, I'm a newbie in electronics and I need help.

I'm working on a little project, and I want to have a fan (similar to the ones in the computer) blow air out of the box to cool it down.

The problem is, I don't want the fan to operate non-stop, since it won't heat up that much and also because I don't want to drain the battery.

So my question is, how can I have the fan spin for 2 seconds at 60 second intervals without draining the battery as much as a direct connection to the fan would?

Thanks for your help.
Alex.

erosennin · 22nd February 2008, 11:34 AM

A 555 circuit will do the job for you.

Read about them here.
http://www.uoguelph.ca/~antoon/gadgets/555/555.html

You would then drive a Transistor with the 555output to provide the current for your fan.

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22nd February 2008, 11:16 AM	(permalink)
Alex101	Power fan every x-seconds for x-amount of time? Hi, I'm a newbie in electronics and I need help. I'm working on a little project, and I want to have a fan (similar to the ones in the computer) blow air out of the box to cool it down. The problem is, I don't want the fan to operate non-stop, since it won't heat up that much and also because I don't want to drain the battery. So my question is, how can I have the fan spin for 2 seconds at 60 second intervals without draining the battery as much as a direct connection to the fan would? Thanks for your help. Alex. Last edited by Alex101; 22nd February 2008 at 11:22 AM.

22nd February 2008, 11:34 AM	(permalink)
erosennin	A 555 circuit will do the job for you. Read about them here. http://www.uoguelph.ca/~antoon/gadgets/555/555.html You would then drive a Transistor with the 555output to provide the current for your fan. __________________ What is a joule per second?