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  • The Evolution of Switched Capacitor Backlight Drivers in Mobile Phones
    of drivers used for LED backlighting: inductive boost converters or charge pumps. To ensure equal brightness of each LED, designers either put all LEDs in series and drive them with a constant current boost converter, or use a switched capacitor charge pump with individual current control for each
  • How new flat capacitors are stimulating design of smaller, more reliable products
    Aluminum electrolytic capacitors have been a mainstay in electronic power circuits for their ability to provide large bulk storage, high voltage and high energy density. However, in a growing number of applications, their on-board height has become a key limiting factor.
  • MLCC Letter and Number Codes
    Multi-layer ceramic capacitors (MLCCs) have stacked layers of conductors and dielectric materials. The dielectric materials have desirable and undesirable physical characteristics that change with voltage, temperature, impedance, etc. Like all engineering, you have to balance the competing
  • Designing a Base Station Coil for the HCS410
    -inductor-capacitor (RLC) circuit should have. Secondly, the resonating capacitor rated voltage is chosen. The coil inductance and resonating capacitor value can then be calculated. For a given coil inductance and coil resistance, choos-ing the coil average diameter and coil winding aspect ratio
  • Simple Synchronous Buck Converter Design - MCP1612
    The density of portable electronic equipment requires the design engineer to pay particular attention to a number of important design parameters. For the power conversion circuitry, two of these parameters are the efficiency and the total circuitry footprint. Keeping the efficiency high extends
  • Smart Computing Article - Unveiling The Mysterious Motherboard
    . Other motherboard adornments include sensitive resistors, capacitors, and electronic components, plus soldered connectors, slots, and sockets. In a desktop computer, the motherboard rests on the bottom of the case. In a tower or mini-tower configuration, the motherboard lines one of the sides
  • Making Your Oscillator Work
    Many Microchip customers ask us for help when designing their oscillator circuits. Due to the great number of combinations of VDD and temperature ranges, crystal or resonator, loading capacitors, circuit layout and circuit board materials, it is not practical to provide a cookbook process
  • The Theory Behind "Smith Chart"
    The Smith chart is used for impedance matching between high frequency circuits. Impedance represents the resistance ability of a circuit to electricity and is a vector. The impedance value is a complex number. Impedance matching is one of the basic requirements for circuit connection. Impedance

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