Would this work?

M

mapaboy

Member
Hey everyone, I have 2 CPU fans and 2 old cell phone chargers.

Fans: 1 - DC 12V 0.25A
2 - DC 12V 0.33A

Chargers: 1 - Input:100-240V AC, output:5.8V 0.12A
2 - Input:100-240V, output: 4.8V 0.9A

I'm not sure if wiring these fans will be good enough for 1 plant. 1 fan will be for blowing air at the plant and 1 will be used as the exhaust. If someone could help me out that would be great!
 
Your Grandfather

Your Grandfather

Well-Known Member
Ummm, I'm not an electronic engineer but....appears to me that fan#1 requires 12v @ 1/4amp and fan #2 requires 12v @ 1/3amp.

If you stated it correctly the chargers put out 5.8v and 4.8v respectively (forget the amperage).

Therefore, I would surmise that No, you can not use either of these cell phone chargers.*

*This is my opinion and I could be wrong, but I don't think so.
 
M

mapaboy

Member
Your Grandfather said:
Ummm, I'm not an electronic engineer but....appears to me that fan#1 requires 12v @ 1/4amp and fan #2 requires 12v @ 1/3amp.

If you stated it correctly the chargers put out 5.8v and 4.8v respectively (forget the amperage).

Therefore, I would surmise that No, you can not use either of these cell phone chargers.*

*This is my opinion and I could be wrong, but I don't think so.
Click to expand...
Well I just hooked up the 1st fan to the 1st charger and it works. I'm not too sure but I think I need a 12V charger in order for this fan to work at it's full potential. Can anyone confirm this?
 
Tr33top

Tr33top

Well-Known Member
mapaboy said:
Well I just hooked up the 1st fan to the 1st charger and it works. I'm not too sure but I think I need a 12V charger in order for this fan to work at it's full potential. Can anyone confirm this?
Click to expand...
Yes that is correct as you can tell the fan is most likely not spinning as fast as it shoulld or moving as much air as you would like. try to either get a 12v plug for max results or close to 12v( the higher the voltage the better it performs but do not go over 12v or your fans will burn out and have a really bad plastic burning smell that tends to stay around for a while)

Btw sometimes if the voltage is to low the fan wont spin at all so just keep that in mind.
 
M

mapaboy

Member
Tr33top said:
Yes that is correct as you can tell the fan is most likely not spinning as fast as it shoulld or moving as much air as you would like. try to either get a 12v plug for max results or close to 12v( the higher the voltage the better it performs but do not go over 12v or your fans will burn out and have a really bad plastic burning smell that tends to stay around for a while)

Btw sometimes if the voltage is to low the fan wont spin at all so just keep that in mind.
Click to expand...
Ok, but what if I was to connect both of my fans together and then attach a power supply that is greater then 12V, would my fans still still burn out?
 
Your Grandfather

Your Grandfather

Well-Known Member
If you connect the fan in series then you'll need a 24v power supply. In parallel, then 12v will do.

Got an old computer power supply laying around? Just a thought.
 
You must log in or register to reply here.
Top