Help with a project, plz - Electronic Circuits Projects Diagrams Free

jaycool1995 · 25th July 2008, 07:04 PM

Hi,
I am trying to build a circuit with a thermally controlled fan with a battery power supply. Any idea on how i should approuch this? And i have seen soom schematics with a resistor with a arrow going into it, could anyone explain what this it and how it works. I have attach a picture of the resistor thingey.
Thanks

dknguyen · 25th July 2008, 07:06 PM

1. What kind of fan? (do you have a specific kind picked out yet? like a motor with a propeller on it, or a computer fan)

2. What kind of temperature sensor do you want to use (what type of environment temperature range, physical setup are you working with).

The symbol is a variable resistor. The arrow is supposed to slide up and down the resistive element placing more or less resistance between the two contacts.

jaycool1995 · 25th July 2008, 07:42 PM

Hi not really that sure on which type of fan to get i thought the case fans would be best but not sure? The Temperature sensor would be measuring the temerature around it. So it would make the fans speed up or down.
Thks

**Krumlink** · 25th July 2008, 07:51 PM

http://www.catb.org/~esr/faqs/smart-questions.html

This link will help you out. Maybe you could even help yourself.

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25th July 2008, 07:04 PM	(permalink)
jaycool1995	Help with a project, plz Hi, I am trying to build a circuit with a thermally controlled fan with a battery power supply. Any idea on how i should approuch this? And i have seen soom schematics with a resistor with a arrow going into it, could anyone explain what this it and how it works. I have attach a picture of the resistor thingey. Thanks

25th July 2008, 07:06 PM	(permalink)
dknguyen	1. What kind of fan? (do you have a specific kind picked out yet? like a motor with a propeller on it, or a computer fan) 2. What kind of temperature sensor do you want to use (what type of environment temperature range, physical setup are you working with). The symbol is a variable resistor. The arrow is supposed to slide up and down the resistive element placing more or less resistance between the two contacts. Last edited by dknguyen; 25th July 2008 at 07:06 PM.

25th July 2008, 07:42 PM	(permalink)
jaycool1995	Hi not really that sure on which type of fan to get i thought the case fans would be best but not sure? The Temperature sensor would be measuring the temerature around it. So it would make the fans speed up or down. Thks

25th July 2008, 07:51 PM	(permalink)
Krumlink	http://www.catb.org/~esr/faqs/smart-questions.html This link will help you out. Maybe you could even help yourself. __________________ MechTronics World of Warcraft is a disease