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ADR291 数据手册DataSheet 下载
ADR291 数据手册DataSheet 下载

... voltage references that use an XFET® reference circuit. The new XFET architecture offers significant performance improvements over traditional band gap and buried Zener-based references. Improvements include one quarter the voltage noise output of band gap references operating at the same current, v ...
DRAFT SOUTH AFRICAN STANDARD (DSS): PUBLIC ENQUIRY STAGE Document number
DRAFT SOUTH AFRICAN STANDARD (DSS): PUBLIC ENQUIRY STAGE Document number

... control of their voltage regulators when used for reciprocating internal combustion (RIC) engine driven generating set applications and supplements the requirements given in IEC 60034-1. It covers the use of such generators for land and marine use, but excludes generating sets used on aircraft or us ...
CHAPTER 2: Diode Applications (Aplikasi Diod)
CHAPTER 2: Diode Applications (Aplikasi Diod)

... Power supply is a group of circuits that convert the standard ac voltage (120 V, 60 Hz) provided by the wall outlet to constant dc voltage. The voltage produced is used to power all types of electronic circuits including: Consumer electronics (ex: radio, television, DVD, etc.) Computers Industrial c ...
VA, VAR and Power Factor – Fact or Fiction
VA, VAR and Power Factor – Fact or Fiction

... This is fine, but what about the polarity of VAR? What happens when more than one frequency is present? The polarity of VAR should be dependent on whether the load is capacitive or inductive, generally people use positive VAR for a capacitive load (Xitron uses this definition), but not everyone foll ...
ZXGD3103EV1 User Guide Issue 2
ZXGD3103EV1 User Guide Issue 2

... evaluation. Before doing the test, it is important that the incumbent diode has been removed and/or a short has been applied across its cathode and anode terminals. The track linking the negative terminal of the converter’s output capacitor to the transformer secondary-side output should then be cut ...
BD9C301FJ
BD9C301FJ

... output capacitor COUT and back to GND of CIN via GND of COUT. The second loop is the one into which the current flows when the bottom FET is turned on. The flow starts from the bottom FET, runs through the inductor L and output capacitor COUT and back to GND of the bottom FET via GND of COUT. Route ...
Energy, Power and Power Management
Energy, Power and Power Management

... motor drives: driven by regulations such as the European Commission’s Energy-related Products (ErP) directive, manufacturers of electric motors are having to equip their products with the ability to match their speed and power output to the load, providing for a huge reduction in average power consu ...
Chapter 11 Fundamentals of Passives: Discrete, Integrated, and
Chapter 11 Fundamentals of Passives: Discrete, Integrated, and

MAX8556/MAX8557 4A Ultra-Low-Input-Voltage LDO Regulators General Description
MAX8556/MAX8557 4A Ultra-Low-Input-Voltage LDO Regulators General Description

... dropout when the pass transistor saturates, and use high base-drive currents under large loads. The MAX8556/MAX8557 do not suffer from these problems and consume only 800µA (typ) of quiescent current under heavy loads, as well as in dropout. ...
PAM2863 Description Pin Assignments
PAM2863 Description Pin Assignments

CD35455460
CD35455460

... recently growing popularity for multi-Megawatt industrial drive applications. The main reasons for this popularity are easy Sharing of large voltage between the series devices and the improvement of the harmonic quality at the output as compared to a two level inverter. The Space Vector PWM of a thr ...
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BATTERY CHARGER INSTRUCTIONS FOR

OP07x Precision Operational Amplifiers (Rev. G)
OP07x Precision Operational Amplifiers (Rev. G)

Aalborg Universitet Islanded Microgrids
Aalborg Universitet Islanded Microgrids

... related issues, such as optimal dispatching, operation scheduling and optimization for different objectives. Based on this definition, this paper proposes a hierarchical control for actualizing optimal unbalance compensation and MPQL control, as shown in Fig. 2. An example islanded microgrid is outl ...
FDS6994S Dual SyncFet
FDS6994S Dual SyncFet

... MOSFETs and Schottky diode in synchronous DC:DC power supplies that provide various peripheral voltages for notebook computers and other battery powered electronic devices. FDS6994S contains two unique 30V, N-channel, logic level, PowerTrench MOSFETs designed to maximize power conversion efficiency. ...
EEE 107-3240
EEE 107-3240

BD9035AEFV-C
BD9035AEFV-C

... outputs “L” if the voltage is less than 90% (Typ.). Because the PGOOD pin is an open drain output, a pull up resistor should be connected when the pin is used. ■Overcurrent protection function (OCP_L, OCP_H) The overcurrent protection has a two-stage system with a control method as shown below. 1) O ...
LTL Transformers (Pvt) Ltd.
LTL Transformers (Pvt) Ltd.

... coil, leaving a minimum of unused space. The short yoke between the treated / Amorphous etc) are chosen to legs of the core reduces the external flow between the active leg core match the desired loss level materials, resulting in an increase in efficiency. The stacked core is more • The simple supp ...
PDF
PDF

MAX941/MAX942/MAX944 High-Speed, Low-Power, 3V/5V, Rail-to-Rail, Single-Supply Comparators General Description
MAX941/MAX942/MAX944 High-Speed, Low-Power, 3V/5V, Rail-to-Rail, Single-Supply Comparators General Description

... input stage from large differential input voltages. This protection circuitry consists of two back-to-back diodes between IN+ and IN- as well as two 4.1kΩ resistors (Figure 3). The diodes limit the differential voltage applied to the internal circuitry of the comparators to be no more than 2VF, wher ...
Fundamentals of transformer design
Fundamentals of transformer design

Harmonics and IEEE 519
Harmonics and IEEE 519

... devices. When a resistive load is applied to an AC power system, it draws sinusoidal current. When an inductive or capacitive load is applied, it too draws sinusoidal current although it is phase shifted compared to the resistive load. There are many types of nonlinear loads which cause harmonics. T ...
ZLNB2016
ZLNB2016

... or below 7.5V. These logic outputs can be used to disable any LNB RF output connected to a receiver (STB) that has been powered down or disconnected (and hence not providing correct cable matching). The ZLNB2016 includes circuitry necessary to detect the presence of a 22kHz tone modulated on either ...
Self-generated and Externally Driven Current Oscillations in n-GaAs
Self-generated and Externally Driven Current Oscillations in n-GaAs

Prodrive Technologies / Cree Dual 1200
Prodrive Technologies / Cree Dual 1200

... For reaching maximum performance the differential pairs should be physically kept close to each other by using for example a flat cable with twisted differential pairs. Although the differential concept already gives additional immunity it is still recommended to keep the PWM signal lines away from ...
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Electrical ballast



An electrical ballast is a device intended to limit the amount of current in an electric circuit. A familiar and widely used example is the inductive ballast used in fluorescent lamps, to limit the current through the tube, which would otherwise rise to destructive levels due to the tube's negative resistance characteristic.Ballasts vary in design complexity. They can be as simple as a series resistor or inductor, capacitors, or a combination thereof or as complex as electronic ballasts used with fluorescent lamps and high-intensity discharge lamps.
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