Urs Kafader
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maxon Motors as Generators
Preface: maxon motors are very efficient. This is also true when operated as generators. The basic calculations are very simple, not the least due to the linear behavior of motors with slotless win...
Brushed or Brushless DC motor?
Selection rules for the suitable commutation system.
On the heating of motors (in hand-held tools)
Preface Motors operated at the rated torque limit can get very hot. In continuous operation the winding can reach 155° resulting in a housing temperature of some 120°C. No surgeon would like to ope...
Small voltage range of DC drives
In the Verordnung über elektrische Niederspannungs-Erzeugnisse (ordinance of electric low-voltage products) the low voltage range is defined as: AC voltage: 50 to 1000 VAC DC voltage: 75 to 1500 V...
What is CLL and what to consider with PWM?
What is CLL? CLL stands for capacitor long life and is used to extend the operating life of DC motors that have precious metal commutation. CLL suppresses brush sparking using the principal of an R...