Urs Kafader
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Activity overview
Latest activity by Urs Kafader-
Urs Kafader created an article,
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...
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Urs Kafader created an article,
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...
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Urs Kafader created an article,
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 ...
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Urs Kafader created an article,
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...
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Urs Kafader created an article,
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 ...
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Urs Kafader created an article,
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 ...
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Urs Kafader created an article,
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...
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Urs Kafader created an article,
Strength of BLDC (EC) motor with sinusoidal commutation
Is a EC motor with sinusoidal commutation stronger? The difficulty answering this question is to find and to define reasonable references. We restrict us here on current and torque considerations. ...
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Urs Kafader created an article,
Measures for an EMC consistent installation
Topic: What measures must be taken to build up a EMC consistent installation (CE)? Solution: Shielding The term „Safety earth“ is defined as a security measure for the protection of people. The t...
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Urs Kafader created an article,
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...