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Is it possible to slow down an electric whisk? Answered

I have an electric whisk that has 6 speeds, however the slowest is far too quick. Is there any way I could bring it down a notch?
Thanks in advance for any help.



Thanks very much guys, I'm going to give the dimmer a try (it's so close to my name after all :) ). I don't use it that much so hopefully the overheating won't be a problem.

Thanks again for your generous answers.


What about an in-line dimmer like this one; http://www.ebay.co.uk/itm/IN-LINE-BRIDGE-DIMMER-IN-BLACK-RATED-60-160W-IDEAL-FOR-TABLE-LAMPS-/140693591666?pt=UK_Home_Garden_Lamps&hash=item20c1fdd672

This would be the simplest option I think.

By "simplest" I am guessing you want to avoid doing any wiring, and I think the listing you linked to, is a dimmer that they are expecting you to splice into an existing power cord.  The reason I am guessing that is because the picture does no show be the ends of those two cords, and that it comes shipped to you with just bare wires on those ends.

In contrast, for this gizmo,
it looks like you just plug it into the wall, and then plug your mixer into it.
Also this one is rated for 300W, and it is cheaper.

BTW, check the shape of that outlet.  Is that really what the outlets look like in your country? For that, you'd recognize the correct one more easily than I would.

Yeh, that one looks pretty good. That is a UK socket too.


Maplin supply a Velleman "drill speed controller", which will basically be a dimmer, but beefed up for inductive loads.


Have you tried using a dimmer switch?  I claim that such a contrivance can be used to reduce the RMS voltage to an AC load.  It does this by only turning on during part of the waveform.

This instructable,
shows how to wire up a dimmer switch with an outlet, and put them in a box together.  That way you can just plug your load into this box.

Not every kind of electrical load out there will work well with a dimmer switch, but I think the motor in your electric mixer is a universal motor,
and that this kind of motor will usually work OK with a dimmer switch. 

By way of anecdote, I claim to have used a dimmer switch with a vacuum cleaner motor before, without killing the motor, and without killing the dimmer.

Ahmmm...... I did mention the dimmer concept a day ago and included
the warning of overheating the motor if run too slow.

BTW a dimmer decreases the average power and the measurable voltage
but increases the RMS heating current as any Fourier calculation will


Ah!  I see that now.  But did also you provide link to an existing instructable, showing how to build make box containing dimmer switch and outlet together?

No?  Well then, I think my reply contains something yours did not.

Seriously though,  I think I've got both these artifacts in my house here somewhere, a dimmer box and an electric mixer, around here somewhere.  I should try this. I mean I should try putting them together, and see if they play nice with each other.

Alright.  Here is a picture of me using an electric mixer through the  dimmer-box I usually use with my soldering iron.  The mixer is a 5-speed Proctor-Silex(r), and that's all I know about it really.  I tried the dimmer switch with the mixer on its lowest setting (=1), and I found I was able to make the blades turn as slowly as not turning at all.  But I really do not feel good about having an electric motor in a stalled (zero speed) condition, so I did not leave the motor in this condition for time more than about one second or so.

Still, I did not release the "magic smoke"  out of the mixer, or out of the dimmer switch.  So this is good.

I suppose the next thing is y'all are going to want me to mix up some cake batter using this setup.

But at this point, I think this indicates that ?maybe? the dimmer  switch approach is not so crazy an idea.  It  will probably work  with your electric mixer too , whatever it is.


Its fun to st you off............ :-)

You are correct about that link and it is a very good one as you always provide.

I used to have one I built from back to back SCRs long ago...
You can expect some audio noise or sound ( depends on what you like ),
the lower speed performance as desired and the possibility of
damage because more I2×R heat and reduced rotor fan air flow cooling.

And in extreme low speed high torque situations on a universal motor
the RMS current can disintegrate the brushes at the commutator and
dump a black static powder like you find in a laser printer all over your
kitchen .

But these horrible things never happen to Instructable members.



6 years ago

Add a series power resistor or multiple series diodes will reduce the applied power and speed of the whisk...


How does one do that?

I think the OP and I share the same electric hand mixer. Mine is a Black and Decker with 6 speeds. 1 is fast, 2 is way too fast and 3 will send batter to the ceiling... I haven't attempted 4-6 yet.

Mine is a Ready Steady Cook one, probably the same innards though. Even on the first speed most of the bowl contents end up on the user :(. These things should not be sold, surely it's someones job to test them.

Iceng, thanks for your reply. My circuit board knowledge is next to nothing, where would I put these? I'll try and upload a pic later today.

Thanks again.

I agree. I don't think they test them with enough "real world" scenarios. On low you shouldn't end up wearing half your recipe... :(

Put a cheep $8 lamp dimmer in a plastic box and you get a lower speed
with a cord and plug..

Worry about over heating the motor as the internal cooling fan wont do
the job that cost conscious manufacturers are too cheep to add another
gear to their product, when you really slow down the whisk.


I've opened it up and took some pics, hope these are helpful.

Whisk selector.jpgWhisk open.jpg

Depends on the kind of motor it has and what method is being implemented to switch from one speed to another.