Urs Kafader
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Temperature sensor NTC
Introduction An NTC - Thermistor (Negative Temperature Coefficient Thermistor) is a type of resistor that decreases the resistance when temperature rises. The SMD (Surface Mounted Device) version o...
Temperature sensor PTC
How does the temperature sensor PTC of the EC 60 work? The used PTC (Positive Temperature Coefficient) thermistor is a resistor which depends on temperature in a nonlinear way. As soon as the tempe...
Introduction to the EPOS family and motion control
Book – Motion Control for Newbies A practical introduction to motion control by means of experiments conducted on a maxon EPOS2 P positioning system. All relevant principles and characteristics of ...
Electromagnetic emissions with DC motors
Topic: How can the electromagnetic emissions of DC motors be minimized? Solution: Main sources The main sources of electromagnetic interference are the brush system (arcing because of inductivit...
Encoder: minimum speed
Question: What minimum motor speed does maxon recommend for a speed control with encoder? Answer: 10...100 rpm, depending on the application. Precondition: The resolution of the encoders should ...
Encoder: Line Driver?
Topic: When to use an encoder with Line Driver? Solution: Reasons to use an encoder with Line Driver Driver for long distances Longer signal lines are possible Often amplification of the signal ...
Power conversion in PWM power stages
Summary PWM power stages act similar to power transformers. Thus it is wise to measure the motor current at the controller output and not at the power supply. Power conversion Basically, a PWM powe...
UL approbation of maxon products
Topic: What is the UL approbation/certification of maxon products? Solution: General Underwriters Laboratories Inc. (UL) is a leading independent organisation in the USA that carries out tests on...
Gearhead efficiency at blocked state
Topic: What's the efficiency of a gearhead in case of blocking? Solution: Actually, the term efficiency should not be applied in the case of a gearhead in blocked shaft state. Efficiency gives the ...
Gearhead: Mass inertia
Topic: Why does gearhead inertia decrease with increasing number of stages? Solution: Gearhead inertia The "Mass inertia" (line 10) of the maxon gearhead data sheets is defined as the moment of i...