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How to connect a cooling fan to DC outlet avc 3312 ci

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Connecting the fan to avc power will generate a harmonic distortion.
use an external power source.

Posted on Feb 08, 2014


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Posted on Jan 02, 2017


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I need its datasheet to connect it to microcontroller and give pwm pulses...can anyone give it or tell me how to connect its four terminals

the four wires will be 0V, 12V (from supply), and a sensor to sense speed (I think this is a voltage o/p proportional to the fan speed). The fourth wire with be the PWM signal to control the fan speed (input to the fan)
see Motherboard CPU 4 Pin Fan Connector Pinout AllPinouts

Feb 19, 2016 | AVC DE07015T12U 70mm Fan

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I would like to know details of AVC BAKA9318B4H Blower. especially, maximum air volume...

AVC BAKA9318B4H Blower Fan, DC24V 0.45A, Ball Bearing, 2-Wire
I can't find any details for that exact model except those above, but on this
webpage from the AVC website, there is a spec for a fan very similar to that you list BAKA9318-24H This is a 93mm diameter 18mm thick blower operating at 24V, like the one you refer to. The H signifies that is the highest airflow model of that type . Your fan also has this designation. I suspect that AVC spec is actually a more general one that includes other bearing types (-24H), while the -B4H indicates that it is specifically a ball bearing blower. The max air flow is 18.3 cu ft per min at zero back pressure and the pressure developed at zero airflow is equivalent to 35.3 mm of water (1 atm is equivalent to about 10m = 10,000,000 mm of water). There is noise figure quoted as well.


Dec 23, 2014 | AVC BAKA9318B4H Blower

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not sure is that a small fan?? , just hook it up to 5 volts dc quickly to test direction even a 1.5 battery may run it and tell you which is + and -

if is a brush motor dc current.
if is a stepper motor it has to be a pulsed voltage necessary.

Oct 30, 2013 | Dell 3615kl-04w-b96 - Fan Pe 6800...

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Needwiring diagram for a avc fan da12025b12l

I have two articles on this, neither of which correspond to what I said in another answer.
Dell use or used to use a non standard pin out (so it will depend was made by AVC especially for Dells)
In the standard pin out the black wire is 0V, the next often yellow is +V (12V for your fan) the third one is speed sense, and the final one is speed control (you search the internet under 4-pin fan pin-out to be more confident.)
Two article are (section 4.1.6)
and the picture drom the second article I reproduce (without permission).
To be certain consult your m/b manual which should all the pin assignmens on your m/b, or you can try to measure the voltage between 0V and the second pin to verify that it is +12V in your case (it may be lower or as high as 13.2V)


Dec 13, 2012 | AVC 12v dc 0.7a 70x15mm 3-wire fan...

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I have a Sharp LC-45GX6U Display & TU-GD10U-T AVC box, and only get a white screen on the display. I've been told that I can bypass the AVC box altogether, and just go to the dispay via HDMI. What...

I too have the same problem with the DC-DC board on the Sharp AVC. But I didn't spend the $134 for a replacement board (MCM or Newark).
Instead, I used the reflow technique by placing the circuit board in the oven for 7 minutes at 475F. You need to cover the plastic header connectors (about 7 of them) with foils to protect them from direct heat (and melt). Take the board out of the oven and give a little pressure on all the ICs while the board is hot. Let it cool down and voila! The TV is working again...

Apr 03, 2011 | Sharp Aquos LC-45GX6U 45 in. HD-Ready LCD...

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How to change the radiator fan?

Electric Engine Fan - Fan Switch

Removal & Installation
2.7L Engine
  1. Disconnect negative battery cable.
  2. Partially drain cooling system.
  3. Disconnect the electrical connector .
  4. Remove engine coolant sensor from coolant outlet tube .
To install:
  1. Apply thread sealant to sensor threads.
  2. Install engine coolant temperature sensor into coolant outlet tube.
  3. Tighten sensor to 20 ft. lbs.(28 Nm) torque.
  4. Connect electrical connector to engine coolant temperature sensor .

3.2L And 3.5L Engines
  1. Disconnect negative battery cable.
  2. Partially drain cooling system.
  3. With the engine cold, disconnect coolant sensor electrical connector.
  4. Remove sensor.
To install:
  1. Install engine coolant temperature sensor.
  2. Tighten sensor to 20 ft. lbs.(28 Nm) torque.
  3. Attach electrical connector to sensor.
  4. Connect negative battery cable.
Removal & Installation
  1. Disconnect negative battery cable.
  2. Partially drain cooling system.
  3. Remove upper radiator hose.
  4. Disconnect cooling fan electrical connector.
  5. Remove cooling fan mounting bolts.
  6. Remove radiator cooling fan assembly from vehicle.

    Fig. Removal and installation of the radiator fan-2.7L Engine shown
To install:
  1. Position radiator cooling fan assembly in vehicle.
  2. Install cooling fan mounting bolts. Tighten to 50 inch lbs. (6 Nm)
  3. Connect cooling fan electrical connector.
  4. Install upper radiator hose .
  5. Fill cooling system.
  6. Operate engine until it reaches normal operating temperature.
  7. Check cooling system and automatic transmission for correct fluid levels.

Hope helps (remember comment and rated this).

Jul 13, 2010 | 2001 Dodge Intrepid

3 Answers

Urgent: AVC Fan Problem!, Fan[box]'s small black piece thing fell out (broke off actually) & so now avc fan hangs loose [computer dosen't work when it hangs looose].

That's your heatsink, and it's very dangerous for the computer to run for long without it... Laying the computer on its side does not harm it, but running it without properly installed cooling aides can be.

I suggest that you contact the manufacturer. Since your computer is less than a year old, hardware issues like this should be covered.. Just don't listen to them when they say reinstalling your OS can fix it, hah hah.

Mar 22, 2008 | Computers & Internet

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