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  • Using PWM to Generate Analog Output
    Pulse Width Modulation (PWM) modules, which produce basically digital waveforms, can be used as cheap Digital-to-Analog (D/A) converters only a few external components. A wide variety of microcontroller applications exist that need analog output but do not require high resolution D/A converters
  • D/A Conversion Using PWM and R-2R Ladders to Generate Sine and DTMF Waveforms
    of complex analog waveforms.: (PWM and R-2R Ladder). Both the Pulse Width Modulation (PWM) and resistor ladders require only a few external components to create a D/A converter with the PICmicro? microcontroller series. These techniques can be used to generate dual-tone multiplexed frequencies (DTMF
  • Design Considerations to Increase Power Density in Welding Machines Converters Using TRENCHSTOP(TM)5 IGBT
    The demand for portable low cost welding machines, especially in developing countries, is increasing. In the Manual Metal Arc and Tungsten Inergt Gas types, in power range from 1,5kW up to 5kW, discrete IGBTs and MOSFETs are broadly used. Mostly, these machines use hard switching current mode PWM
  • Designing Power Supplies for Global Applications (.pdf)
    transistors-the two-transistor forward converter-can be used to provide low-cost, steady output voltages even when operating over a wide range of input voltages. (PWM) to provide high conversion efficiency. Such supplies are generally limited by the minimum pulse widths possible when using commercial PWM

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