Questions tagged [fan]
A device that produces air movement by way of blades or surfaces attached to a rotating motor.
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What is the power connection on this fan and where can I find the matching cord? [closed]
I bought this fan (labeled as 12v brushless duct fan 20000 rpm) and it came without any wires or anything. Does anyone recognize what kind of connection this is?
Thank you.
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Making custom electric duct fan out of BLDC motor [closed]
I am trying to make a electric duct fan to replace the one used in these DIY projects link1 link2.
I wanted to use a BLDC motor for this project, but I have never used one before so I am kind of lost.
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Reduce noise coming from DC brushless fan
First of all, I'm an amateur when it comes to electronics so thanks for your patience!
I have added a fan on a sound processor which tends to overheat but then I discovered I can hear the fan on the ...
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A simple solution to the PWM controlled DC fan?
I am trying to temperature control a set of 12V DC fans (2 wires) of mine.
I went down the pwm microcontroller output + mofset rabbit hole (increases the noise / can damage the fans), read about RC ...
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Fans with presumably same cooling performance but significantly different current
I am looking to replace a fan in laptop. I got two candidates for a replacement. Both of them have the same Lenovo FRU number (Field Replacement Unit). From what I understand items with the same FRU ...
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What is the proper name of this fan connector?
Does anybody know what the correct name for this fan connector is?
The female plug side is "Molex KK 254 Housing with Polarization Rib, 4 pin" https://molex.com/en-us/products/part-detail/...
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Is power low for a high speed fan?
Got a question for my lab telling that the power consumed is low at higher speeds, why is it so? couldn't find any source backing up this statement too
I did find this graph of torque vs speed, so I ...
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How to run fans out of phase?
I am working with server fans. The noise generated by these fans is quite disruptive, and I've read that running them 180 degrees out of phase could potentially reduce the noise.
I'm looking for ...
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I need to finding a part to my PCB
Hello I have a PCB that I only have one component left to Fit on the bord. But I have no understand what it is or how to get that. It say 3/8 on the part but haven't find anything like that.
Link to ...
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High frequency sound on a PWM fan for some specific duty settings
So I got a used fan (specifically a Sanyo Denki 9s1212 series) and I discovered that under most duty settings (practically when not 100% or 0%) the fan emits a high frequency sound like this: (mind ...
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Implementing a 5 Watt, Linear Variable DC Power Supply that DOESN'T get burning hot?
The load I am trying to drive is a fan module that includes a DC cooling fan, a tachometer, some status LEDs and other temperature monitoring electronics. Historically users have swapped power ...
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Using a Zener diode and transistor to reduce high pitch fan noise
I am working on a simple setup for a 5V DC computer fan, powered by two small solar panels. This fan will only start spinning around\above 2.3V. Anything below this value will just produce an annoying ...
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PWM is not controlling the fan, voltage drops | ESP32 4-pin fan driver
I'm know only a little about electronics but I had a try to create a driver for 2 120 mm fans (3 W*2). I have PNP, NPN BJTs and N-channel MOSFET IRF3205 which requires 4 V at the gate to be triggered. ...
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Control fan speed using TRIAC along with capacitors
I am looking for ways to control an AC 220V ceiling fan speed.
Usually, it's connected to a fan regulator, which has 2 or 3 capacitors depending on the 4 or 5-speed step regulator.
After following one ...
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I'm not sure if this is considered a dual voltage this is a kdk a40as fan
the motor
I am planning to connect this to a three phase rectifier but not sure if this is a dual voltage could anyone please help?
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Are there drawbacks to connecting a remote diode temperature sensor through a connector and cable interface?
I would like to connect an external temperature sensor (external to the PCB) to a the DP/DN pins of an EMC2103 fan controller. My plan would be to use a twisted pair cable with a generic TO-92 remote ...
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Touch button bypass on fan with smart inching switch [closed]
How can I bypass the touch button on fan Sencor SFE 2340WH? I want to of/off fan with smart momentary switch. Below is componets maybe with reading errors.
Components:
TR1-TR5:
HSDQ / BT134-800 / ...
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Hardware based PWM fan solutions
HPE DL360P’s love to run these fans (8x of them) at max speed. I don’t really need them all running, but wasn’t sure if dummy plugs to just trick the motherboard was a good idea. Wiring length and ...
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Looking for a circuit to run a 12 V toilet exhaust fan when utility power fails
I have a tiny house.
Recently my inverter failed and it could take weeks or months to have it fixed. It's a 48 V DC solar to 240 V AC, that is intermittently working with a non-working 5 kWh battery.
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What type of single-phase motors can I control using a frequency inverter?
I have a single phase fan, and I want to control the speed of this fan so it occurred to me to design a VFD for this purpose, but I was researching more about single phase AC motors and I read that ...
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Ventilation system level 2/3 not working anymore (circuit analysis)
A house ventilation system has the following circuit:
The following three switches enable three levels of fan speed:
Level 1 is always running, level 2 is intermediate and level 3 is full power.
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Limiting a 24VDC fan's draw to 1ampere
I have a 24 VDC fan that is rated for 3 A draw at maximum speed. I want to limit it to only using 1 A at 24 VDC.
The device I'm building uses a 5 A 24 VDC power supply (already bought them) and I only ...
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Fan at full speed on PC - Is there anything I can do to slow it down? [closed]
The internal sensor for the motherboard is giving out an invalid value for the temperature, causing the fan to go on full. The computer is exactly 10 days out of warranty.
It's a 4 Pin 12v PWM fan. Is ...
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Hydraulic cooling fan to box with 4-wire set up
I have an 110 VAC external hydraulic cooling fan I would like to add to my breaker box for a cooling system.
The fan has a green/yellow (ground), brown, blue, and black wiring system. I'm not sure how ...
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Can I solder two 12 VDC fans to one end of wires of single Molex connector?
I have 2 Sunon fans (12 V, 415/519 mA - max, 5.4 W/6.22 W - max). I want to solder both onto the end of a single Molex connector cable extension (bought from a local store).
Molex connectors all-4 ...
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Peltier cooling with a fan
I'm not sure if this is the right section to ask this question (or if I should rather have posted it on Physics stack exchange). Anyway, I'm trying to build a cloud chamber that relies on Peltier cell ...
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Understanding CPU fan ref design
I'm currently designing a carrier board for the Jetson Orin NX 16GB SoM (system on module).
I'm having trouble understanding the ref design of the fan management part. The part about fan management is ...
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How can I power a PC-fan with mains power? [closed]
I am making a project where I want to integrate an old fan I have laying around. I want to plug it into a socket and start.
In my first try connected the red and black from the converter with the ...
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How to design a circuit for multiple 12 V loads using one battery?
How can I connect multiple 12 V loads to this 12 V, 2600 mAh Li-ion battery without damaging it?
12 VDC cartridge heater
12 VDC fan
12 VDC thermostat
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Getting rid of PWM fan noise
I have a 3D printer which has two fans, both running on 24 V. I want them to be very quiet, except for when really needed. I already upgraded to bigger fans, so running them slower would still give ...
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Fan doesn't start in some positions
Lately I have noticed that a wall-mounted fan I have does not start when the blades are in a certain position. When it is switched on, it just hums but doesn't start. Sometimes it gives a little kick ...
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Detecting stalled AC fan in high-temperature system
The problem: AC 230 VAC fans in a system rated to 100 °C need to be monitored for failure.
There is no third wire, just the L and N leads.
None of the potential solutions seem good. For example:
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Converting 0-3.3 V to 0-12 V
My Teensy 3.6 microcontroller outputs an analog 0 V - 3.3 V signal.
I plan to use my Teensy's PWM pin to control the speed of a fan that has 12 V as its 100%.
I wish to convert the 0 - 3.3V --> 0 - ...
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Attiny85 drawing 100mA idle
I'm trying to build a timed fan, but I seem to be drawing more current from the battery than expected.
Not shown: 3.7V Li-Ion battery connected to a 5V boost converter (which is how I'm getting the ...
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What type of (3-pin) connector is this?
I need to replace a fan (DC, Blower, 60x60x23mm) but the replacement unit I got (Delta AUB0712HH-C) came with the wires unfinished, which I'm aware is likely standard procedure but was news to me. And ...
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What is this Lenovo 4-pin fan header?
I have a Lenovo p620 machine and I'm trying to swap out the terribly loud fans with Noctua PWM fans. The problem is the 2 chassis fans are using a weird 4-pin connector where the ridges are on the far ...
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Powering a Micro-controller & PC Fan by a single DC adapter
Motivations:
I want to power a microcontroller & 5V-PWM 12V-DC fan simultaneously with a 12V, 6W wall-power supply. This set-up is to form a cheap speed controlled Solder-fume extractor.
PSU: 6W ...
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Ceiling fan question
Does anyone know what this is? Usually ceiling fans only have a capacitor across the start winding but this one includes a coil. Why the added coil?
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What kind of motor should I get for a portable fan?
My 9 V DC motor got damaged. It is a 9 V (6 DD batteries). It draws about 420 mA.
I measure the length, diameter, shaft diameter, screws diameter, etc and bought one 6-12 V that fits perfectly, but I ...
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Ventilation fan in bathroom slower level
I just changed control switch and box with (2 capacitators in it) to my fan in the bathroom. The fan is in bathroom above shower and has a 4 uf capacitator stuck to it.
Level 1 seems slower than ...
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Peltier module use improvement
I am trying to setup a box, where I can keep the temperature to constant/near constant number of degrees. I have chosen to use a Peltier module for cooling but the result isn't satisfactory.
A similar ...
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How to control the speed of four 12 VDC fans across two sources?
I destroyed my fan hub and am trying to replace it with a simple circuit. My PC has a fan header that can power the 12 V DC (not PWM) fans, however, it only supports two fans.
So I am trying to power ...
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PWM Fan Controller, inverted duty cycle
What I am trying to design is a 12 V DC controller for a PWM fan that uses a 100 Hz input signal and reversed duty cycle between 8 and 87 % to drive it. What I mean by reversed is that the fan is on ...
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Will putting a resistor between a PC's fanheader pins convince the BIOS the fan is on?
Will putting a resistor between a PC's fan header pins convince the BIOS the fan is on? Will it catch fire? Do I even need the resistor?
How can I convince the BIOS the fan is on without a fan?
Edit: ...
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NE555 varying PWM not working
I'm building a fan controller based on an NE555 with varying PWM.
Unfortunately the fan is continuously blowing at full speed no matter the potentiometer position.
I based the circuit on this ...
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Is the rated current on a component actually a fixed exact number, or is it more like a range in practice?
I have a circuit with 30 computer fans and a DC power supply and they seem to turn on and run well.
The fans take 12V and their rated current is 0.18A. My power supply is 12V 5A.
By my math, this ...
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Fan voltage - sticker vs specifications
I am looking to replace the fan in my Marlec Solar iBoost as it is extremely noisy and causes insidious vibrations in the wall.
On the fan, the label shows as follows:
Model: AV-F4020LB
DC 5V
I ...
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Why can I use an AC power supply to spin DC PC-fans?
This question might seem a bit alarming and it did come up because of an inadvertency on my part.
I tried to reuse old PC fans for cooling and grabbed an old phone power supply that wasn't being used ...
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2-pin fan connector identification
I can't find exactly this connector. It is from a small fan of a Lecroy Xs scope. The pitch is 0.05 inch. Does anyone happen to know who the manufacturer is, or what type this is?
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Can I use a light bulb dimmer to control an AC axial fan? [closed]
I have multiple AC axial fan that I need to slow down. Model number is ACI4420HH from ebm-papst. https://www.ebmpapst.com/de/en/products/compact-fans/axial-compact-fans/p/ACI4420HH.html
They run on ...
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