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"Filtering Technique Isolating Analog/Digital Power Supplies in PLL
"Filtering Technique Isolating Analog/Digital Power Supplies in PLL

FPD7612P70 LOW NOISE HIGH FREQUENCY PACKAGED pHEMT Features
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MPQ4470(A) - Monolithic Power System
MPQ4470(A) - Monolithic Power System

... driver enters a tri-state (high Z) whenever the inductor current reaches zero. A current modulator takes control of the LS-FET and limits the inductor current to less than -1mA. Hence, the output capacitors discharge slowly to GND through the LS-FET to greatly improve the lightload efficiency. At li ...
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... understanding of the requirements for the LIGBTs used in such low-power off-line SMPS applications. Figure 1 shows a schematic of the flyback circuit. When the switch S is closed (LIGBT turned-on), the rectified dc voltage is applied to the primary side of the transformer (V1). Depending on the grid ...
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... harm and take appropriate remedial actions. Buyer will fully indemnify TI and its representatives against any damages arising out of the use of any TI components in safety-critical applications. In some cases, TI components may be promoted specifically to facilitate safety-related applications. With ...
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... electrically isolates that segment of the I2C-bus. This can be used, for example, to isolate a 100-kHz system from the rest of the 400-kHz system to support mixed operation at 100/400 kHz. The enable/disable feature can also be used with the PCI management bus to provide up to (or more than) eight P ...
Grundfos Variable Speed Circulator Pump
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... variable speed of the pump will have a range from minimum speed = off to maximum speed = 100%. When dip switch C is in the OFF  position the variable speed of the pump will have a range from minimum speed = 15% to a maximum speed = 100%. Dip switch D - speed control external/speed control maximum % ...
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... proposed previously but without any enabling means of realizing the high-frequency on-die magnetic transformers that would be required. This limitation aside, ac distribution in this application has important merits: It allows high-voltage and low current distribution, allows the use of low-voltage ...
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Variable-frequency drive



A variable-frequency drive (VFD) (also termed adjustable-frequency drive, variable-speed drive, AC drive, micro drive or inverter drive) is a type of adjustable-speed drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and voltage.VFDs are used in applications ranging from small appliances to the largest of mine mill drives and compressors. However, around 25% of the world's electrical energy is consumed by electric motors in industrial applications, which are especially conducive for energy savings using VFDs in centrifugal load service, and VFDs' global market penetration for all applications is still relatively small. That lack of penetration highlights significant energy efficiency improvement opportunities for retrofitted and new VFD installations.Over the last four decades, power electronics technology has reduced VFD cost and size and has improved performance through advances in semiconductor switching devices, drive topologies, simulation and control techniques, and control hardware and software.VFDs are available in a number of different low- and medium-voltage AC-AC and DC-AC topologies.
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