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Topic: Fixing Kitchen mixer (Read 369 times) previous topic - next topic

binooetomo

Sep 14, 2013, 04:32 am Last Edit: Sep 14, 2013, 04:35 am by binooetomo Reason: 1
Dear All...

First, I apologie if this post abusing this forum.

Here we go.
I Have a kitchen mixer with broken speed controll.
Here it is with opened casing
http://i44.tinypic.com/2qjm2w8.jpg

And I thing, this is the same motor
https://www.midwestapplianceparts.com/images/9703571.jpg

I want to replace the speed controll entirely using 555 (and triac + diac) based.
I tried some schematic from internet ..but got no success.
All I got is only On-Off ..no speed regulation.

Please anybody can tell me :
1. What kind of motor it is
2. Suggestion for working speed controll schematic



Sincerely
-bino-

jtw11

Just two wires, looks like a normal DC motor.

In terms of schematics - show us what you've tried first?

Should be very easy to use an on/off switch and a VERY simple 555 circuit (most VERY simple 555 circuits don't give you 0-100% speed control, hence the on/off switch).

binooetomo


Just two wires, looks like a normal DC motor.

In terms of schematics - show us what you've tried first?

Should be very easy to use an on/off switch and a VERY simple 555 circuit (most VERY simple 555 circuits don't give you 0-100% speed control, hence the on/off switch).


It's been quiet long time ago ..

As far as I remember one that I adopt is http://www.pcbheaven.com/scripts/imagepresent.php?filename=%2Fcircuitpages%2Fimages%2Fvoltagecontrolledacdimmer_1262362194.png

From http://www.pcbheaven.com/circuitpages/Voltage_Controlled_AC_Light_Dimmer/

I add another pot between VCC and Ground ... and inject the wiper output to 'Control Voltage input'

Still, I Only got On-Off ... but no speed controll.

Sincerely
-bino-

Chagrin


Just two wires, looks like a normal DC motor.


It's a "universal motor". It's AC and has brushes. No magnets. It could be used with DC though, typically requiring around 48V.

I don't know much about AC dimmer circuits but I can say that you have to make sure yours is tailored for an inductive load (you've got a motor -- not a lamp!). The comments on your linked page say the circuit cannot be used for an inductive load as-is.

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