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Profile Documents Logout
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Test Philosophy
Test Philosophy

... correctly driven and correctly powered • Confirm that the input and output pins are not damaged and that the IC is not overloaded • Confirm that the IC functions according to its truth table ...
AC Circuits
AC Circuits

T2800 Overcurrent or Earth Fault Relay
T2800 Overcurrent or Earth Fault Relay

... or disabled by bridging terminals 15 and 16. The current setting range (0.02 – 0.2 x IN) is multiplied by 10 (0.2 – 2.0 x IN) by bridging terminals 18 and 19. The delay setting range (0.1 – 1.0 sec.) is multiplied by 10 (1.0 - 10 sec.) by ­bridging terminals 12 and 13. The current setting can be c ...
PDF
PDF

... This work deals with the design and implementation of an AC to DC LED driving circuit consisting of a buck boost converter and a flyback converter. A buck boost converter is integrated with a fly back converter by sharing a single power switch. A recycling path is also provided to recycle the leakag ...
AD8018
AD8018

... A voltage divider can be created with two equal value resistors (Figure 7). There is a trade-off between the power consumed by the divider and the voltage drop across these resistors due to the positive input bias currents. Selecting 2.5 kΩ for R1 and R2 will create a voltage divider that draws only ...
GNS RF2480
GNS RF2480

... 2V; for highly linear operation, the input signal (and output power) must be reduced appropriately. The recommended DC level for this pin is 3.0V. The peak minimum voltage on this pin (VREF - peak modulation amplitude) should never drop below 2.0V. The peak maximum voltage on this pin (VREF + peak m ...
Specifications - Lighting Images Technology
Specifications - Lighting Images Technology

Experiment 1: Multimeter Measurements on DC Resistive Circuits
Experiment 1: Multimeter Measurements on DC Resistive Circuits

... wire in the jack labeled mA and a black wire in the jack labeled COMMON. Select a current range dependent on the expected current measured. For this experiment the 20mA range is the most appropriate. Ammeters have very low resistance that typically is less then 0.5  A common mistake is to connect ...
Chapter 3 Diodes, Problem Solutions
Chapter 3 Diodes, Problem Solutions

... Calculate the built-in voltage of a junction in which the p and n regions are doped equally with 1016 atoms/cm3 . Assume the free electron concentration in intrinsic silicon ni ' 105 /cm3 . With no external voltage applied, what is the width of the depletion region, and how far does it extend into t ...
Write your own generic SPICE Power Supplies controller
Write your own generic SPICE Power Supplies controller

waveshaping
waveshaping

OPAMPS1 - Electro Tech Online
OPAMPS1 - Electro Tech Online

Abstract - PG Embedded systems
Abstract - PG Embedded systems

FSL106HR Green Mode Fairchild Power Switch (FPS™) Features
FSL106HR Green Mode Fairchild Power Switch (FPS™) Features

... transistor becomes almost zero. Then, VFB climbs up in a similar manner to the overload situation, forcing the preset maximum current to be supplied to the SMPS until the overload protection is activated. Because excess energy is provided to the output, the output voltage may exceed the rated voltag ...
BDTIC IFX52001EJ Constant Current Relay Driver
BDTIC IFX52001EJ Constant Current Relay Driver

... Office. Infineon Technologies Components may only be used in life-support devices or systems with the express written approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system, or to affect the safety or e ...
Passive-Optical Person Detector
Passive-Optical Person Detector

... shadow crossing the sensor will result in a brief tone. At the same time, current flows through LED D2, which will therefore light briefly. The first LED (D1) not only shows when the circuit is operating, but is also used to generate a stable auxiliary voltage of about 1.9 V. ...
Final Design Report - University of Idaho
Final Design Report - University of Idaho

... The K10 lunar rover is a remote, extraterrestrial surveillance robot under development at NASA Ames in Moffett Field, California. Tasked with increasing the efficiency of future lunar missions, the K10 will deploy to the moon before manned missions. Once there, it will map the terrain and look for r ...
1. Introduction: 2. Power Supply : Theory of Operation
1. Introduction: 2. Power Supply : Theory of Operation

... Each power supply consists of four phase controlled half-wave converters. Each of the two half-wave converters are connected through interphasing transformers to obtain a full-wave bridge with 120"conduction. The input voltage for these two half-wave bridges are 60' apart. In order to obtain the hig ...
8mD2884 Data Sheet
8mD2884 Data Sheet

Accessible Wheelchair Scale
Accessible Wheelchair Scale

... changes proportionally. If a voltage is applied during loading the change in resistance will alter the output voltage in a linear manner and the output can be used to calculate the applied force. However, the strain gauge is a delicate thin piece of wire and it cannot be deformed directly without f ...
BJT Differential Amplifier Laboratory
BJT Differential Amplifier Laboratory

... Finally, PSpice should be used to perform a Monte Carlo analysis of the circuit. The resistors were all given standard unbridged values and were allowed to vary uniformly within 5% of the nominal resistor value. The transistors should be given a nominal  value (say 175) and allowed to vary uniforml ...
Magnet Charger/Magnetizer Model 440
Magnet Charger/Magnetizer Model 440

... reliable, low maintenance unit. The seven position voltage select control allows easy adjustment of the capacitor voltage while an easy to read front panel meter monitors the capacitor voltage. Production fixtures are easily manufactured for virtually all types of polar configurations. The Model 440 ...
ijser.org - Sudan University of Science and Technology
ijser.org - Sudan University of Science and Technology

... three phase is rectified and boosted with power factor correction. The output of the boost converter is connected to the DC bus. The second stage controlled the output voltage of the converter. The charger system needs to work with any kind of electric car. The most important issues are the voltage ...
PDF
PDF

... the buck and boost converter are not able to charge the battery continuously (in case of PV system battery charger). With MPPT operation as the power voltage curve gets varied with irradiation level and thus the voltage corresponding to the maximum power variation. To propose dc-dc converter, there ...
International Electrical Engineering Journal (IEEJ) Vol. 5 (2014) No.12, pp. 1673-1679
International Electrical Engineering Journal (IEEJ) Vol. 5 (2014) No.12, pp. 1673-1679

... The Load changes the voltage Variation in transmission lines must be limited, otherwise the consumer’s equipments are damaged at distributed side. For reducing this voltage variation a FACTS device called Distributed Power Flow Controller (DPFC) and Distributed Interline Power Flow Controller (DIPFC ...
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Switched-mode power supply



A switched-mode power supply (switching-mode power supply, switch-mode power supply, SMPS, or switcher) is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently. Like other power supplies, an SMPS transfers power from a source, like mains power, to a load, such as a personal computer, while converting voltage and current characteristics. Unlike a linear power supply, the pass transistor of a switching-mode supply continually switches between low-dissipation, full-on and full-off states, and spends very little time in the high dissipation transitions, which minimizes wasted energy. Ideally, a switched-mode power supply dissipates no power. Voltage regulation is achieved by varying the ratio of on-to-off time. In contrast, a linear power supply regulates the output voltage by continually dissipating power in the pass transistor. This higher power conversion efficiency is an important advantage of a switched-mode power supply. Switched-mode power supplies may also be substantially smaller and lighter than a linear supply due to the smaller transformer size and weight.Switching regulators are used as replacements for linear regulators when higher efficiency, smaller size or lighter weight are required. They are, however, more complicated; their switching currents can cause electrical noise problems if not carefully suppressed, and simple designs may have a poor power factor.
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