Questions tagged [fan]
A device that produces air movement by way of blades or surfaces attached to a rotating motor.
550 questions
0 votes
0 answers
47 views
Reverse engineering of Mercedes S-Class rear seat fans part 2: how to correctly send data through DC-LIN?
First part of the research here. Some news about the progress of my research: the fan is running! Well, almost. This fan operates on DC-LIN or LIN over Powerline Communication. So I built an ...
5 votes
2 answers
181 views
Reverse engineering of Mercedes S-Class rear seat fans: how to make them work?
I'm new here, so I apologize in advance if I'm not clear. I'll do my best to clarify your questions as soon as possible. For a professional project, my team and I purchased the rear seats of a ...
0 votes
1 answer
326 views
1 vote
1 answer
119 views
What is a good flyback diode for a brushed 80mm DC fan?
I have a 80mm DC brushed fan, that has a rated amp draw of 0.18A, at 12V. I am driving it with a LM7812 for positive voltage and switching with a IRLZ44N MOSFET. I want to make sure this circuit will ...
-4 votes
1 answer
110 views
how to extract a bearing that broke while extracting? [closed]
I tried to replace the inner bearing of a condenser fan (outdoor unit) of an A/C. However while the outter bearing was easy to pull out (with the bearing extractor), the innder one was way harder and ...
- 409
0 votes
1 answer
113 views
12V fan control but with up to 50V supply - is a simple half bridge enough?
I have an existing circuit with a variable input voltage of 15V-50V. Now I want to add a fan controller that can supply a 12V brushed fan (with PWM to regulate fan speed). The fan will have a rather ...
- 13
1 vote
0 answers
136 views
Fan with PWM, MOSFET, Level shifter and ESP32 schematic check
I'm currently trying my very first schematic (in Fritzing) for a bigger project on fermentation that I'm working on as a hobby. I had no prior knowledge of electronics before this project, but am ...
- 21
2 votes
0 answers
76 views
Wet wind Chill Vs Dry wind Chill
Fan cooling is very common in electronics these days. The effects of ambient temp and air flow are well known. What about humidity? Wet air will cool better than dry air. How important is this at ...
- 16.3k
-1 votes
1 answer
184 views
PWM controlled Fan - N-MOSFET - Get rid of Gate-capacity
Tl;dr: It is about PWM fan control. Want a clear rectangular signal but I get sawtooth-like signal instead. Something is unloading slow causing the fan not to turn off during LOW signal. I'm ...
- 1
2 votes
2 answers
240 views
Trying to find replacement part for fan connector
Looking for the name of this 4 pin female part. It’s the fan connection on mother board on hp spectre x360 15 eb0043dx.
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1 vote
1 answer
59 views
A question about operation voltage range term of DC fans
Regarding DC fans like in this datasheet, there is both "Rated voltage" and "Operating voltage range". In other electrical devices one must use the rated voltage. But in case of ...
- 4,727
0 votes
2 answers
169 views
How could I build an isolated PWM high power fan controller?
I have this 12V car fan and I am supposed to use it to control the temperature of a fuel cell stack with PID logic. I am using a STM32 to do so. The proposed solution looked something like this: I ...
-1 votes
1 answer
683 views
Why do all PC fans have thin blades? [closed]
100% of PC cooling fans have super thin curved blades while wings and propellers in planes have more sophisticated thick airfoil shape. Is this becose of the fan blade weight limit or some other ...
- 665
0 votes
0 answers
69 views
TXU0101DBVR level shifter getting damaged
I have a fan working on 24 VDC and it could be controlled via a PWM signal (25 kHz) of 5 V. I am using an STM32F439 microcontroller (at 3.3 VDC). To interface the PWM control of FAN I used the level ...
- 85
2 votes
1 answer
109 views
Can I run an axial fan with a stated max voltage of 27.6 V off the 24V supply in a truck?
Most sources online state that a truck alternator (24 V system) has an output voltage of 27.6-28.8 V. All of the 24 V axial fan options I can find on Mouser/Digikey state a max input voltage of 27.6 V....
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