Re: AC Fan motor speed control ideas
Can you reverse the fan blade?
Can you reverse the fan blade?
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Don't buy those $10 PSU "specials". They fail, and they have taken whole computers with them.
My computer doubles as a space heater.
Permanently Retired Systems:
RIP Advantech UNO-3072LA (2008-2021) - Decommissioned and taken out of service permanently due to lack of software support for it. Not very likely to ever be recommissioned again.
Asus Q550LF (Old main laptop, 2014-2022) - Decommissioned and stripped due to a myriad of problems, the main battery bloating being the final nail in the coffin.
Kooky and Kool Systems
- 1996 Power Macintosh 7200/120 + PC Compatibility Card - Under Restoration
- 1993 Gateway 2000 80486DX/50 - Fully Operational/WIP
- 2004 Athlon 64 Retro Gaming System - Indefinitely Parked
- Main Workstation - Fully operational!
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Re: AC Fan motor speed control ideas
I do not know if this will work or not but give it a tryComment
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Re: AC Fan motor speed control ideas
If it's a shaded-pole motor, you can flip the stator or the rotor, to reverse direction: https://woodgears.ca/reader/walters/reverse_motor.htmlComment
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Re: AC Fan motor speed control ideas
How about a picture of the motor?Comment
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Re: AC Fan motor speed control ideas
Okay, then remove the two screws holding the bearing retainers and reassemble with the stator flipped.
The leads will exit opposite their usual place, check for mechanical interference.
It's most certainly a shaded pole motor.
When you have it apart, you'll see the heavy copper shunt bars, which is what makes them self-starting without multiple windings & a run cap or centrifugal switch.
Woodgears just shows a larger, C-frame one (that powers a gearbox).
Incidentally, those shading shunts are what limit these motors to some awful efficiency, something on the order of 30 percent.
They then exist, after the motor's at speed, as shorted turns!
"pokemon go... to hell!"
EOL it...
Originally posted by shango066Originally posted by smashstuff30guilty,guilty,guilty,guilty!
guilty of being cheap-made!
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Hi, I'm building a pottery wheel for my wife.
Since it needs to reverse direction and have a nice control over rpm, I decided to pick a diy electric scooter motor.
It operates at 48v and comes with a controller.
It has three wires for speed control
-5v
-gnd
-signal.
The problem is that if I use a 100k pot, motor starts spinning when 1.4v and will get to max revolutions at 3.4v. With this 2v range, the potentiometer is not really ideal, as it will change suddenly rpm with the slighlest touch.
I need something... -
I have a motor control board I am trying to repair. I've been told the motor is fine, but the control board will only make the motor go one direction but not the other. Power comes in through a linear transformer and then a rectifier bridge and then filter caps. No schematics for the board. Relays on the board are 24V so I started by setting my bench PSU to 24V and injecting voltage. There are several LEDs. All but one LED lights up. There are test points labelled +15V, 0V and -15V. When checking voltage potential between +15V and 0V, I get a perfect 15V. For -15V to 0V, my meter shows approximately... -
Hi,
i am asking for some Help.
I have one of these Nescafe Aeroccino (Milk Frother) things with a bad motor.
The Motor didn´t start anymore and internet is full of users just swapping the motor for a Mabuchi RF-500TB-12560.
So i got a few of these from Banggood.
I swapped the motor and now i have a new fault condition.
In a working Frother you would press the start button, it will light red and work for a few minutes.
If you press longer it will light blue and just mixup the milk.
With the new Motor it just starts... -
Patient is a Maytag/Whirlpool/Kenmore clothes dryer. Not sure of exact model, doesn't matter. All boards are out of production.
Specific problem is a Maytag 8544799 / WP8544799 motor-control board, aka Diehl Controls 708879-05. Customer states the board "doesn't work, motor doesn't run". Not sure how the repairman made that assessment, or if it's even accurate. He can't get replacement boards, and the owner decided to buy a new dryer, so whether this board is the problem is speculation on his part. Again, doesn't matter.
I've been over the board looking for... -
I was working on this machine yesterday and I now going to use an incandescent lights instead of a fuses to figure out what the issue is with it blowing control voltage rail but this not the only issue the coolant pump failed the meager test as well as the main motor as well this motor has 12 motor wire leads instead of the normal 9 wires
This metal lathe has a weird motor setup it has a soft start motor with a “Y” and a delta type of motor winding setup and it is not done in the motor pucker head enclosure it is with four different contactors wired in a configuration I have not...
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