I need help with wiring fan to 9v power adapter.

Toggle sidebar Toggle sidebar
N

Nate Hartzfeld

Reputable
Mar 11, 2015
3
0
4,510
I have an Insignia NS-PCF1250 that I'm trying to power via 9volt ac/dc adapter. I stripped both the adapter and the fan but the fan has two smaller that make up each big cord. Four wires come from the fans center hub, but are grouped as two wires after put into their sleeves. Everything has been stripped and I feel like I have tried to wire as many different ways as possible but to no avail. Any advice for a noob like me?
 
Solution
P
Yes, chances of a faulty adapter wiring are good. But even if not, 100 mA is only 10% of what I think you need to get the fan to start up! So even if the adapter CAN supply some power, it is not nearly enough to run the fan.
Sort by date Sort by votes
P

Paperdoc

Polypheme
Ambassador
Oct 19, 2006
11,279
1,034
69,340
First, color codes of wires. That is a standard computer case "4-pin" fan. You only need to use TWO of its wires. The most common coding is: Pin #1 is Black, and that is Ground; Pin #2 is Yellow, and that is the +12VDC supply; Pin #3 is Green, and that is a speed pulse signal; and Pin #4 is Blue, and it carries the PWM signal. There is one other color combo that shows up, with a sequence Black - Red - Yellow - Blue. For your purposes, you need to connect the Pin #1 (Black wire) to the Negative side of your power supply, and Pin #2 (Yellow, or maybe Red) to the Positive side. Do NOT connect any of the other two leads to anything. NOTE that, if you connect the power supply backwards, all that happens is the fan turns the wrong way.

Now, here's something else important. You indicate that you cannot get the fan to work no matter how you have connected it. Well MAYBE you do NOT have a 9VDC power supply. Many "power bricks" put out AC, not DC, and rely on circuitry in the user device to convert it to the DC needed. If that is what you have, the DC motor will never run on an AC supply. Read the markings on the power adapter you have. What does it say for output? AC or DC?

The other thing to check is current output of the adapter. IF it really outputs 9V DC, check also the current spec on it. A fan like that will need at least 1.0 amps to start it up, although it may only draw half that or less when running.
 
Upvote 0 Downvote
N

Nate Hartzfeld

Reputable
Mar 11, 2015
3
0
4,510


Its output is DC and its current reads dc 100 ma which should do the trick, but you know what, I think I remember having trouble with this adapter before, hence why I found it in the junk drawer. I think this may be an old/bad adapter. What do you think the chances that the wiring goes wonky after being jostled and bent in a dawer for a while (probably years)?


 
Upvote 0 Downvote
P

Paperdoc

Polypheme
Ambassador
Oct 19, 2006
11,279
1,034
69,340
Yes, chances of a faulty adapter wiring are good. But even if not, 100 mA is only 10% of what I think you need to get the fan to start up! So even if the adapter CAN supply some power, it is not nearly enough to run the fan.
 
Upvote 0 Downvote
Solution
N

Nate Hartzfeld

Reputable
Mar 11, 2015
3
0
4,510


Got it, then just to be sure to cover my bases, I'll get an adapter that at least has an output of an amp and does the proper ac/dc with 12 volts.

Thanks!
 
Upvote 0 Downvote
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom