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  • Supplying an AC/DC Power Supply
    to work from 100VAC to 240VAC) or fixed input AC/DC supplies (designed to work at 115VAC or 230VAC) will probably work with a DC input and the only difference in operation would be that only two of the diodes forming the bridge rectifier would be utilised. A linear power supply that has a transformer
  • AC-DC Conversion
    In most power electronic applications, the power input is in the form of a 50 Hz or 60 Hz sine-wave AC voltage provided by the electric utility, which is then converted to a DC voltage. Increasingly, the trend is to convert the input AC into DC in an uncontrolled manner, using rectifiers and diodes
  • 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
  • Regeneration vs. Dynamic Braking in DC Drives
    are in a DC phase controlled drive. Regeneration in a phase controlled DC drive involves a second (antiparellel connected) rectifier bridge. During regeneration, mechanical energy from the rotating load and armature (now acting as a generator), is inverted from DC directly back onto the AC power line
  • Transformerless Power Supplies: Resistive and Capacitive
    There are several ways to convert an AC voltage at a wall receptacle into the DC voltage required by a microcontroller. Traditionally, this has been done with a transformer and rectifier circuit. There are also switching power supply solutions, however, in applications that involve providing a DC
  • AN1106, Power Factor Correction in Power Conversion Applications Using the dsPIC (R) DSC
    ) and a Pulse Width Modulator (PWM), enable the digital design and development of power related INTRODUCTION applications to be simpler and easier. Most of the power conversion applications consist of an Some advantages of using a digital implementation for AC-to-DC conversion stage immediately
  • Watlow SCR Power Controllers and Ohio Semitronics Watt Transducers
    The Ohio Semitronics PC5 category of transducers measures True Power (Watts) in an AC single-phase or three-phase power system and provides an isolated DC analog output that is proportional to the electrical power being consumed in a load. There are thousands of PC5's being used worldwide
  • Sizing Three-Phase Inverters for Single-Phase Power Applications (.pdf)
    ) and voltage, the ratio of current for a single-phase circuit will be 3 (1.732) times that of a three-phase circuit. This means that the input rectifier will see 1.732 times the current of the output devices. When powered by three-phase, these currents are nearly the same. This higher current would

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