most speed controllers are triac based,i doubt that you will get a module for it,as it very old,but,all is not lost,you could fit an external module on the mains cable,just connect the motor leads from the internal module,wire then to the mains feed coming into the mixer,cut mains cable,in middle,fit speed module,mains cable from mixer goes into one side of the module,mains cable with the plug on goes into the other side of the module,so when you plug the mixer in,just turn on the module,DO NOT USE A LIGHT DIMMER,buy a proper speed controller
mm
July 2011