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High Frequency Divider/PLL Synthesizer ADF4007  FEATURES
High Frequency Divider/PLL Synthesizer ADF4007 FEATURES

... This multiplexer output allows either the N divider output or the R divider output to be accessed externally. Digital Power Supply. This pin can range from 2.7 V to 3.3 V. Decoupling capacitors to the digital ground plane should be placed as close as possible to this pin. DVDD must be the same value ...
Design and Performance Analysis of a Series
Design and Performance Analysis of a Series

... the voltage and the current is negative, corresponding to a zero-current switching (ZCS) region, for those higher than f0 the phase difference is positive and corresponds to a zerovoltage switching (ZVS) region. At resonance the current and the voltage are in phase, thus to minimize the reactive pow ...
Now that we know how to make a summing amplifier, ponder over
Now that we know how to make a summing amplifier, ponder over

... voltage difference come from? Actually, we can amplify the signal only upto a particular Voltage which has to be fed into the op-amp. It can’t amplify the signals beyond that (obvious reason –Energy consideration) Thes voltage is called VSATURATION which is the same VSS as shown in the diagram on th ...
an025-voltage regulators
an025-voltage regulators

... within a few percent of the desired value, the flag output will stay high indicating a “good” condition. If the output drops more than 8% below the nominal value due to low input voltage or an over current condition, then the flag output drops to indicate a fault condition. This flag output can be d ...
Design of Grid Connect PV systems
Design of Grid Connect PV systems

... model number of the solar modules and inverter. • An estimate of the yearly energy output of the system. This should be based on the available solar irradiation for the tilt angle and orientation of the array. If the array will be shaded at any time the effect of the shadows must be taken into accou ...
IGBT (Insulated Gate Bipolar Transistor) 1 Differences Between MOSFET and IGBT
IGBT (Insulated Gate Bipolar Transistor) 1 Differences Between MOSFET and IGBT

... gate-collector capacitance CGC on the gate. This means a change of VCE has the same effect as an internal current source into the bias circuit, where the current is given by the expression ig = CGC (VCE) × dVCE/dt. Unfortunately CGC is not constant, but it changes its value with VCE. The strongest c ...
MAX1479 300MHz to 450MHz Low-Power, Crystal-Based +10dBm ASK/FSK Transmitter General Description
MAX1479 300MHz to 450MHz Low-Power, Crystal-Based +10dBm ASK/FSK Transmitter General Description

SYNCHRONOUS MACHINES
SYNCHRONOUS MACHINES

Open-circuit Test
Open-circuit Test

... • Both transformers are connected to supply such that one transformer is loaded on another. • Primaries of the two identical transformers are connected in parallel across a supply. • Secondary are connected in series such that emf's of them are opposite to each other. • Another low voltage supply is ...
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Evaluates: MAX1572 MAX1572 Evaluation Kit General Description Features

MAX1954A Low-Cost, Current-Mode PWM Buck Controller with Foldback Current Limit General Description
MAX1954A Low-Cost, Current-Mode PWM Buck Controller with Foldback Current Limit General Description

... The MAX1954A synchronous current-mode, pulsewidth modulation (PWM) buck controller is pin compatible with the popular MAX1954 and is suitable for applications where cost and size are critical. The MAX1954A operates from an input voltage range of 3.0V to 13.2V, independent of the IC supply. The outpu ...
LTC5507 - 100kHz to 1GHz RF Power Detector.
LTC5507 - 100kHz to 1GHz RF Power Detector.

... shift amplifier converts the RF input signal to a low frequency signal. The frequency range of the RF pin is typically up to 1000MHz. The detector demonstrates excellent operation over a wide range of input power. The Schottky detector is biased at about 70µA. The hold capacitor is external. ...
Design and Simulation of High Speed Low Power CMOS
Design and Simulation of High Speed Low Power CMOS

MP3422, 6.5A, 600kHz High Efficiency
MP3422, 6.5A, 600kHz High Efficiency

... In down mode, gate of HS-FET is pulled to VIN, and it works with high impedance when HSFET is on, the power-loss is high and regulation is bad in down mode. Down mode is designed for work in startup and SCP condition, it is not suggested to set MP3422 in down mode in normal work, unless the thermal ...
V. Oscillators
V. Oscillators

... supply current, high trigger current, inability to run with very low supply voltage. Using some of 555 CMOS successors allow avoiding these disadvantages. Le us have a look at Table: the CMOS are able to operate at very low supply voltage – down to 1V! Are able to operate at low supply current, ther ...
Analog Devices HMC-AUH318 Datasheet
Analog Devices HMC-AUH318 Datasheet

... Eutectic Die Attach: A 80/20 gold tin preform is recommended with a work surface temperature of 255 °C and a tool temperature of 265 °C. When hot 90/10 nitrogen/hydrogen gas is applied, tool tip temperature should be 290 °C. DO NOT expose the chip to a temperature greater than 320 °C for more than 2 ...
Altech/ABL Sursum Miniature Circuit Breakers
Altech/ABL Sursum Miniature Circuit Breakers

... are coupled to the tripping latch pins of the VEA or MA to which they are attached, reliably producing trips at the drop-out voltage and preventing resetting when less than 85% line voltage is present. The Undervoltage Trip is provided with at least 6-inch pigtails of stranded fixture wire for hook- ...
CMOS Quad 2-Input NAND Schmitt-Trigger
CMOS Quad 2-Input NAND Schmitt-Trigger

... other intellectual property right relating to any combination, machine, or process in which TI components or services are used. Information published by TI regarding third-party products or services does not constitute a license to use such products or services or a warranty or endorsement thereof. ...
understanding vector diagrams
understanding vector diagrams

AD8235 英文数据手册DataSheet 下载
AD8235 英文数据手册DataSheet 下载

... The AD8235 is the smallest and lowest power instrumentation amplifier in the industry. It is available in a 1.5 mm × 2.2 mm wafer level chip scale package (WLCSP). The AD8235 draws a maximum quiescent current of 40 μA. In addition, it draws a maximum 500 nA of current during shutdown mode, making it ...
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Install Guide

Bipolar Transistor 30V 300mA fT;3.5GHz typ. NPN Single PCP
Bipolar Transistor 30V 300mA fT;3.5GHz typ. NPN Single PCP

... 300μA 250μA 200μA ...
A voltage reduction technique for battery-operated systems
A voltage reduction technique for battery-operated systems

... used as an equivalent critical path for all digital circuits. Since by changing the supply voltage of a ring oscillator the frequency changes (VCO), one can implement the system shown in Fig. 1 with a phase-locked loop (PLL)as shown in Fig. 2. The fixed-frequency divider ( N I is used to implement t ...
Title Synthesis of input-rectifierless AC/DC converters Author(s) Liu
Title Synthesis of input-rectifierless AC/DC converters Author(s) Liu

... C/DC converters without input rectifiers have received some attention because of their relative advantages in eliminating power loss in rectifiers and reducing harmonic distortions. In airborne applications where the mains frequency is as high as several hundreds hertz, the phase-lead effect of the ...
RF3928B 380W GaN WIDEBAND PULSED POWER AMPLIFIER Features
RF3928B 380W GaN WIDEBAND PULSED POWER AMPLIFIER Features

... infringement of patents, or other rights of third parties, resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended application circuitry and specifications at any time with ...
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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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