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Urs Kafader

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Latest activity by Urs Kafader
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    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

    How can the electromagnetic emissions of DC motors be minimized? Main sources The main sources of electromagnetic interference are the brush system (arcing because of inductivity and brush vibrati...

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    Urs Kafader created an article,

    Encoder: minimum speed

    Speed control with encoder What minimum motor speed does maxon recommend for a speed control with encoder? 10...100 rpm, depending on the application. The resolution of the encoders should be at le...

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    Urs Kafader created an article,

    Encoder Line Driver

    Encoder: When to use an encoder with Line Driver? Reasons to use an encoder with Line Driver Driver for long distances Longer signal lines are possible Often amplification of the signal current St...

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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 power...

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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

    What measures must be taken to build up a EMC consistent installation (CE)? Shielding The term „Safety earth“ is defined as a security measure for the protection of people. The term „Shielding eart...

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    Urs Kafader created an article,

    ESCON: Speed controller (open loop) with Adaptive IxR Compensation

    Principle Designed for permanent-magnet brushed DC motors and brushless EC motors, the ESCON servo controller family provides the operation mode "Speed controller (open loop)" with "...