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  • Incompatibility of Power Factor Correction Capacitors with AC PWM Drives
    factor as seen by the user's line. A bank of these oil-filled or dry type AC capacitors usually reside in a conspicuously placed metal enclosure nearby the motor. Beware of retrofitting any AC controllers (including VVI and CSI types) to existing induction motors! If the installation is not thoroughly
  • How to Charge Supercapacitor Banks for Energy Storage
    the frequent replacement of batteries isn't practical. This article addresses the challenges related to charging these large capacitors, and shows you how to evaluate and select the best system configuration for backup energy storage. A supercapacitor charger solution is demonstrated, with waveforms
  • Brushless DC Motor Control Using PIC18FXX31 MCUs
    A PICDEM TM MC demo board was used to develop, test and debug the motor control code. The PICDEM MC has a single-phase diode bridge rectifier, converting AC input to DC and a power capacitor bank that keeps a stable DC bus. A 3-phase IGBT-based inverter bridge is used to control the output voltage
  • Application Note: Designing with Thermally Protected TMOV Varistors in TVSS Applications (.pdf)
    Metal Oxide Varistors (MOVs) are commonly used to suppress transients in many applications such as: Transient Voltage Surge Suppressors (TVSS), Uninterruptible Power Supplies (UPS), AC Power Taps, AC Power Meters or other products. Lightning, inductive load switching, or capacitor bank switching
  • Application Note: Cell Phone Camera Flash Solution Using the AAT3110-4.5 Charge Pump
    capacitor-charged flash is fine for still photos, but it cannot provide a constant light source for movie-mode recording. Most constant light sources do not provide the luminous intensity needed for a camera flash. A small bank of three or four white light emitting diodes (LEDs) can be used

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