help with 220 volt DC motor

MaxHeadRoom

Joined Jul 18, 2013
21,257
I am thinking in this one
For a Universal motor the norm is to use a 1pulse/rev due to the very high rpm, that all that is needed.
Otherwise you may tie up the μp if you go too high a pulse rate.
The difference between a mosfet and a triac, is the triac is phase angle control of the AC power.
Max.
 

ian field

Joined Oct 27, 2012
6,539
For a Universal motor the norm is to use a 1pulse/rev due to the very high rpm, that all that is needed.
Otherwise you may tie up the μp if you go too high a pulse rate.
The difference between a mosfet and a triac, is the triac is phase angle control of the AC power.
Max.
A while back; EPE magazine published a MOSFET motor controller.

The MOSFET was enclosed by a bridge rectifier so a DC component can do full wave control, but I don't remember any more detail than that.
 

MaxHeadRoom

Joined Jul 18, 2013
21,257
Can also be done with a Triac before the bridge.
In fact a while back Motorola brought out an IC, TDA1085C just for the purpose of controlling a Universal motor with tach, intended for washing machine use, there was also one T.M. Manuf that used it to control his unit.
The T.M. version used a bridge after the Triac in his version.
I believe I have the reverse engineered T.M. version somewhere.
Max.
 
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