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  • Reducing Adjustable Frequency Drive (AFD)-caused Harmonics at Partial Loads
    for pulse width modulated (PWM) AC adjustable frequency drives (AFDs). SwingingChokePaper.indd Reducing AFD-caused Harmonics at Partial. Load Conditions. T. SwingingChoke-US-10. Introduction. The need for controlling the level of harmonic. echnical Notes. current in power distribution systems
  • Compact Filtering for High Current & High Frequency Applications (Part 2)
    Understanding shunt current levels, dissipation, and the associated temperature rise of High Current Feedthrough Filters. ./5de76524-1bab-4325-b751-a070f15ef117 designfeature. GEORGE M. KAUFFMAN, PE. Vice President of Engineering, NexTek, Inc., Westford, MA. High-Current, High-Frequency
  • MSK4225 Closed Loop Controller
    The MSK4225 is a MOSFET H bridge with internal gate drive and a PWM. generator, all in one convenient package. This configuration can be used to control a. variety of loads, such as a brushed DC motor or a voice coil. Because of the internal. PWM generator, all the user needs to do is provide
  • KEELOQ (R) Manchester Encoding Receive Routines
    All KEELOQ (R) Encoders use a common code word format. They all pack the bits of information in the same number and position in the transmission sequence. While all the encoders offer a basic Pulse Width Modulation (PWM) method to produce a signal that is suitable for radio transmission, many
  • A Digital Constant Current Power LED Driver
    (64 steps) of duty well for LED applications because the LED presents a cycle resolution at 125 kHz. If this control resolution is constant load to the power stage. Therefore, the not sufficient, the PWM frequency can be lowered or controller does not need to make frequent adjustments. the MCU can
  • AN1106, Power Factor Correction in Power Conversion Applications Using the dsPIC (R) DSC
    to the supply voltage?. Closed. The answer to this question lies in the fact that PFC is. a low-frequency requirement. Therefore, the converter. need not be resistive at all frequencies, provided a. V. filtering mechanism exists to remove the high-. frequency ripples. Active PFC must control both the input
  • Temperature Measurement Circuits for Embedded Applications
    amplifier (op amp) oscillator can accurately. measure the resistance of an RTD, this circuit is. typically not used with a thermistor because of the large. logarithmic change in the sensor’s resistance over. Time Window. temperature. The main advantage of a frequency. output is that an ADC is not required
  • Accuracy vs. Resolution
    The often confusing but important difference with inclinometer sensor output is whether accuracy is the same as resolution. In mechanical testing and measurement, it is often important to understand how an object reacts to various forces. An inclinometer is commonly used to measure tilt

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