Which power Supply to power 3/4 Pin PC Fans

Don't worry about your fans being either 3pin or 4pin, for running them at their advertised speeds you need 2 pins. Positive and Negative. You can use any 12v power adapter and connect your fans in parallel, for example if you have 12V 2A power adapter, you can run 3 120mm fans easily.

For adapter you can use this one.
https://robu.in/product/orange-12v-2a-power-adapter-with-5-5-x-2-1mm-dc-plug/

For wires these are enough, 2 wires go to each fan.
https://robu.in/product/male-to-male-jumper-wires-40-pin-40cm/

For connecting all the fans to the DC power supply.
https://robu.in/product/female-2-15...pter-connector-plug-for-cctv-camera-pack-of-2

So your total becomes ₹681 including GST+SHIPPING. You can probably make this even cheaper if you have DIY instincts.
 
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Heisen said:
Don't worry about your fans being either 3pin or 4pin, for running them at their advertised speeds you need 2 pins. Positive and Negative. You can use any 12v power adapter and connect your fans in parallel, for example if you have 12V 2A power adapter, you can run 3 120mm fans easily.

For adapter you can use this one.
https://robu.in/product/orange-12v-2a-power-adapter-with-5-5-x-2-1mm-dc-plug/

For wires these are enough, 2 wires go to each fan.
https://robu.in/product/male-to-male-jumper-wires-40-pin-40cm/

For connecting all the fans to the DC power supply.
https://robu.in/product/female-2-15...pter-connector-plug-for-cctv-camera-pack-of-2

So your total becomes ₹681 including GST+SHIPPING. You can probably make this even cheaper if you have DIY instincts.
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Excellent informative . to the point post , I already have 4+ 12V Power Adapters with me , Might not be same power so fans might blow slowly but thats fine
I require only the jumper and jacks

Ordered from Robu.in
 
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kuduku said:
Left to Right
1- 6V 0.5A
2- 12V 1A
3- 3V/4.5V/6V/7.5V/9V/12V 0.3A
4- 24V 1A
5- 12V 3A

I suppose 2 or 3 should be fine to run 1 fan
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Avoid using 3, Your fan is rated for 0.4A and Adapter is for 0.3A. Even if the fan was 0.3A its still not a good idea to run any power supply at 100% load for extended periods of time.

For one or two fans no.2 and no.5 will be fine, For more than 2 fans you should use no.5 only.
 
dash2009 said:
Avoid using 3, Your fan is rated for 0.4A and Adapter is for 0.3A. Even if the fan was 0.3A its still not a good idea to run any power supply at 100% load for extended periods of time.
Click to expand...
+1

You also have to check which adapters are compatible with the DC connector you ordered (are you able to easily insert them), because of the pin diameter there can be differences.

Use No.5 it can easily handle 4 fans, looks to be in good shape and better built.

These are pin outs of the fan header. They are same for the 3 pin header.



You just have to find the PIN 1, by looking at the tabs, you can determine which one will be the PIN 1 (GND) and pin next to it will be the VCC (+12V).

One end of the wire you will be able to easily insert in the fan header, for the other one you have to tighten it with the screw driver.


If there is a problem fitting all the fan wires into the DC connector plug, you can slice the wires and expose the copper, then first connect all of the GND wires together, twist them into a single one, and then insert it into the connector then screw it in. Similarly do the same for the other +12V wires.
 
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