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Ground Fault Protection for an Ungrounded System
Ground Fault Protection for an Ungrounded System

... contact when the voltage crosses a preset value. In order to replicate the function of local indicating lamps, one of these relays will be connected across each of the three phase VTs secondaries, as shown in ...
LTC3541-1
LTC3541-1

... a linear regulator. It can be used to provide up to two output voltages from a single input voltage making the LTC3541-1 ideal for applications with limited board space. The combination and configuration of these major blocks within the LTC3541-1 is determined by way of the control pins ENBUCK and E ...
MAX1533/MAX1537 High-Efficiency, 5x Output, Main Power-Supply Controllers for Notebook Computers General Description
MAX1533/MAX1537 High-Efficiency, 5x Output, Main Power-Supply Controllers for Notebook Computers General Description

... overlap occurs, compared to 180° out-of-phase regulators where the duty-cycle overlap occurs when the input drops below 10V. Output current sensing provides accurate current limit using a sense resistor. Alternatively, power dissipation can be reduced using lossless inductor current sensing. Interna ...
HMC990LP4E 数据资料DataSheet下载
HMC990LP4E 数据资料DataSheet下载

... enable functions, LO and RF baluns and high linearity passive mixer cores with bias control interface. The balanced passive mixer combined with high-linearity IF amplifier architecture of HMC990LP4E provides excellent LO-to-RF, LO-to-IF, and RF-to-IF isolations. The HMC990LP4E provides a very low no ...
Parallel Circuits
Parallel Circuits

MAX1533/MAX1537 High-Efficiency, 5x Output, Main Power
MAX1533/MAX1537 High-Efficiency, 5x Output, Main Power

... overlap occurs, compared to 180° out-of-phase regulators where the duty-cycle overlap occurs when the input drops below 10V. Output current sensing provides accurate current limit using a sense resistor. Alternatively, power dissipation can be reduced using lossless inductor current sensing. Interna ...
TPS7A84A 3-A High-Accuracy (0.75%), Low
TPS7A84A 3-A High-Accuracy (0.75%), Low

... BIAS supply is required when the VIN supply is below 1.4 V. Conversely, no BIAS supply is required when the VIN supply is higher than or equal to 1.4 V. A BIAS supply helps improve dc and ac performance for VIN ≤ 2.2 V. This output voltage range does not include device accuracy or accuracy of the fe ...
Section A
Section A

Section 93.30 - Exide Technologies
Section 93.30 - Exide Technologies

... Specifications: The silicon controlled rectifier is designed to maintain a system voltage within + or 0.5% of the set value without exceeding its rated output current. It will maintain + or - 0.5% with input voltage variations 10% above or below the rated input AC voltage and with 5% frequency varia ...
Silicon Controlled Rectifiers
Silicon Controlled Rectifiers

... he silicon controlled rectifier (abbreviated as SCR) is a three-terminal semiconductor switching device which is probably the most important circuit element after the diode and the transis tor. Invented in 1957, an SCR can be used as a controlled switch to perform various functions such as rectifica ...
ISL94202 - Intersil
ISL94202 - Intersil

... Temperature monitor inputs. These pins input the voltage across two external thermistors used to determine the temperature of the cells and or the power FET. When this input drops below the threshold, an external over-temperature condition exists. Temperature Monitor Output Control. This pin outputs ...
DC/DC converter testing with Fast Load Transient
DC/DC converter testing with Fast Load Transient

LP38798 800-mA Ultra-Low-Noise, High-PSRR
LP38798 800-mA Ultra-Low-Noise, High-PSRR

... LDO that can supply up to 800 mA output current. Designed to meet the requirements of sensitive RF/Analog circuitry, the LP38798-ADJ implements a novel linear topology on an advanced CMOS process to deliver ultra-low output noise and high PSRR at switching power supply frequencies. The LP38798SD-ADJ ...
User Maintenance Manual/Handbook Issue 1.05 Software version
User Maintenance Manual/Handbook Issue 1.05 Software version

... take care to ensure that the complete system is safe. For example, metal sheathed thermometers may be connected to the milliK and then placed in a furnace powered from a 230V electrical supply. Single fault conditions in such a furnace could lead to the thermometer wires and the front terminals of t ...
Diapositiva 1
Diapositiva 1

... Variable resistors are also known as potentiometers. They are used to act on a circuit, for example to adjust sensitivity or to change gain. They have 3 legs. The resistance between the two outside legs (RAB) is fixed. By moving the middle leg or cursor, we adjust the resistance between the middle l ...
PDF: 312KB
PDF: 312KB

422 and 485 Overview and System Configurations
422 and 485 Overview and System Configurations

GE Energy 20A Digital MicroDLynx : Non-Isolated DC-DC Power Modules Data Sheet
GE Energy 20A Digital MicroDLynx : Non-Isolated DC-DC Power Modules Data Sheet

... These modules operate over a wide range of input voltage (VIN = 3Vdc-14.4Vdc) and provide a precisely regulated output voltage from 0.6Vdc to 5.5Vdc, programmable via an external resistor and PMBusTM control. Features include a digital interface using the PMBusTM protocol, remote On/Off, adjustable ...
2253i/2253iX Series User Manual
2253i/2253iX Series User Manual

... Always ensure that facility AC input power is de-energized prior to connecting or disconnecting any cable. In normal operation, the operator does not have access to hazardous voltages within the chassis. However, depending on the user’s application configuration, HIGH VOLTAGES HAZARDOUS TO HUMAN SAF ...
Philippe Proost electrically adjustable hydraulic valve Sensorless
Philippe Proost electrically adjustable hydraulic valve Sensorless

... dither signal. Again like with the dither signal, when high driving frequencies are used, this secondary sensing signal is advised to use. However, when the driving frequency is sufficient low, the ripple current resulting from it may be just fine to sense the pilot position. Although a two dimensio ...
BD135/ 137/ 139 NPN Epitaxial Silicon Transistor
BD135/ 137/ 139 NPN Epitaxial Silicon Transistor

Document
Document

ANALYSIS AND DESIGN OF MATRIX CONVERTERS FOR
ANALYSIS AND DESIGN OF MATRIX CONVERTERS FOR

... alternative to the conventional back-to-back PWM (Pulse Width Modulation) converter in the ac/ac conversion. This direct ac/ac converter provides some attractive characteristics such as: inherent four-quadrant operation; absence of bulky dc-link electrolytic capacitors; clean input power characteris ...
LTM8027 - 60V, 4A DC/DC uModule Regulator
LTM8027 - 60V, 4A DC/DC uModule Regulator

... indicated in Table 2 is not recommended, and may result in undesirable operation. Using larger values is generally acceptable, and can yield improved dynamic response, if it is necessary. Again, it is incumbent upon the user to verify proper operation over the intended system’s line, load and enviro ...
TPS386596 Quad Reset Supervisor With Manual Reset Input (Rev. A)
TPS386596 Quad Reset Supervisor With Manual Reset Input (Rev. A)

... SLVSA75A – JULY 2010 – REVISED AUGUST 2015 ...
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Josephson voltage standard



A Josephson voltage standard is a complex system that uses a superconductive integrated circuit chip operating at 4 K to generate stable voltages that depend only on an applied frequency and fundamental constants. It is an intrinsic standard in the sense that it does not depend on any physical artifact. It is the most accurate method to generate or measure voltage and, by international agreement, is the basis for voltage standards around the World.
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