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  • RF Power Amplifier Efficiency: Big Challenges for Designers
    The basic laws of thermodynamics ensure that no electronic device can achieve 100% efficiency-- although switch-mode power supplies come close (approaching 98%). Unfortunately, anything that generates RF power cannot presently boast such near-ideal performance as there are simply too many
  • Using the TC1142 for Biasing a GaAs Power Amplifier
    frequency, higher breakdown voltage, lower noise figure, and higher power-added efficiency. This translates to lower power dissipation and longer talk time for cellular subscribers. Single Cell Li-Ion Battery and High-Side FET Switch.
  • Sensing Air Flow with the PIC16C781
    Programmable Switch Mode Controllers (PSMC) are not just for switching power supplies. This technical brief describes how to use the PIC16C781 PSMC in combination with the Integrated Operational Amplifier, Digital-to-Analog Converter (DAC), and gated timer to construct a thermally operated air flow
  • A Simple Circuit for Driving Microcontroller Friendly PWM Generators
    for designing a switching power supply as a peripheral to a microcontroller: a set/reset flip-flop, a high-speed voltage comparator and an op amp to implement the error amplifier. The microcontroller controls the MCP1630 through its clock input. The frequency of the clock determines the pulse
  • Application Note: Output Inductor Selection for the AAT115X Series Buck Converter
    . AnalogicTech's AAT115X switch mode buck converters require that the output inductor ripple current be limited to 30% to 40% of the rated current at the maximum input voltage (Eq. 1). This limits the peak switch current while still providing a good ramp slope for the PWM peak current mode comparator
  • EETimes.com | Electronics Industry News for EEs & Engineering Managers
    Details surface about Intel's chip-set roadmap UMC still negotiating purchase of WSMC, but little progress made U.S. decides not to impose dumping duties on Taiwan NETsilicon earnings driven up by Y2K, but it's only for one quarter General Semiconductor's new power MOSFETs switch fast at low
  • Single electron toggles transistor on and off
    A new type of transistor takes only one electron to switch between on and off, a breakthrough that could lead to lowpower chips with higher computing densities. A micrograph of the single-electron transistor (SET) superimposed on experimental circuitry shows the source, , along with the applied ac
  • Capacitance and RF-Conductance/Transconductance Look-up Table Based pHEMT Model
    of path-dependence which occurs in modeling. large-size devices and devices with dispersion is resolved. The. model is symmetric and swappable between drain and source. The model has also accurate leakage model and can be used for. either amplifier or switch applications. The validity of the model

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  • Circuit technology - Similarly and mixed analog/digital
    Therefore, the increasingly digital final stages with switching amplifiers are used.
  • Power electronics
    … power electronics like e.g. in the area of the illumination technique [cf. the mentioned new regions "Power Factor Correction" (PFC) and "Force Commutated of Rectifiers (FCR)", also "Active front End" called], further solar converters, switching amplifier , netzgekoppelte pulse converters and …
  • Circuit technology - Similarly and mixed analog/digital
    Therefore, the increasingly digital final stages with switching amplifiers are used.
  • Elements of the applied electronics
    For many applications, the hall-modules integrated today with specific properties give it e.g. with integrated linear or switching amplifier (see the appendix B2).
  • Measuring electronics and sensors
    2.1 designations for the individual operating modes of discrete, hybrid and integrated amplifier circuits amplifier designations after use Differenzverstärker operational amplifier calculating amplifier universal amplifier power amplifier separating amplifier .
  • RF POWER AMPLIFIERS FOR MOBILE COMMUNICATIONS
    2.4.5 Switching Amplifiers .
  • RF Power Amplifiers
    3.43 Similar power losses also appear in the Class D voltage switching amplifi- er , if the collector currents jump (for example, if the series circuit is detuned or if the duty cycle is not 50 percent).
  • Start pdf
    Subsequently, the binary digital signal is power amplified by a switching amplifier .