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General License Test, Question and Answer Pool for Study.
General License Test, Question and Answer Pool for Study.

MAX1910/MAX1912 1.5x/2x High-Efficiency White LED Charge Pumps General Description
MAX1910/MAX1912 1.5x/2x High-Efficiency White LED Charge Pumps General Description

... The MAX1910/MAX1912 include soft-start circuitry to limit inrush current at turn-on. When starting up with the output voltage at zero, the output capacitor charges through a ramped current source, directly from the input with no charge-pump action until the output voltage is near the input voltage. ...
Electronic Slot Car Controller Mysteries Revealed
Electronic Slot Car Controller Mysteries Revealed

... wired controller, current flows from the base and collector into the emitter. The direction of current flow is denoted by the arrows on the transistor symbol. Since power transistors are inexpensive, it’s very easy to turn the controller into a negative wired controller by replacing the transistor w ...
FR015L3EZ Low-Side Reverse Bias / Reverse Polarity Protector
FR015L3EZ Low-Side Reverse Bias / Reverse Polarity Protector

... qualification devices, where the predicted failure rate is less than 0.01% at the specified voltage for 24 hours. It is intended to indicate the device’s ability to withstand transient events that exceed the recommended operating voltage rating. Specification is based on qualification devices tested ...
Static Line Ultramicrotomy Accessories Static Line Ionizer
Static Line Ultramicrotomy Accessories Static Line Ionizer

... Our goal has always been to offer the most advanced equipment on the market that makes the cryo process easier. After extensive testing and research we have developed the "Static-Line" II. The "Static-Line II simplifies the handling and use. It allows for the adjustment of the voltage by the turn of ...
Measure Multiple Distribution Panels at the Same Time
Measure Multiple Distribution Panels at the Same Time

RF3701 数据资料DataSheet下载
RF3701 数据资料DataSheet下载

... Thermal vias are required in the PCB layout to effectively conduct heat away from the package. The via pattern has been designed to address thermal, power dissipation and electrical requirements of the device as well as accommodating routing strategies. The via pattern used for the RFMD qualificatio ...
three-phase bridge rectifiers (b6)
three-phase bridge rectifiers (b6)

... thyristor turn-on determines the turn-off of another thyristor from the same side of the bridge due to the natural commutation process (described above or in Lab no.12). During the rectifier operation, all commutations occur when, in the opposite side of the bridge, a thyristor is in on-steady-state ...
OWNER`S MANUAL - Incriminator Audio
OWNER`S MANUAL - Incriminator Audio

... The ground connection must be made to the vehicle’s chassis and should be kept as short as possible, while accessing a solid piece of sheet metal in the vehicle. The surface should be sanded at the contact point to clean rust, paint or grime so a metal-to metal connection between the chassis and the ...
BU7245HFV
BU7245HFV

... Indicates the voltage range of the output under specified load condition. It is typically divided into maximum output voltage High and low. Maximum output voltage high indicates the upper limit of output voltage. Maximum output voltage low indicates the lower limit. ...
excitation systems
excitation systems

... 8.6.3 Modeling of Complete Excitation Systems Figure 8.39 depicts the general structure of a detailed excitation system model having a one-to-one correspondence with the physical equipment. While this model structure has the advantage of retaining a direct relationship between model parameters and ...
Berg Heinz-Peter, Fritze Nicole Reliability and vulnerability of
Berg Heinz-Peter, Fritze Nicole Reliability and vulnerability of

... will require significant changes in the way energy utilities operate and care for their transformers. The first step in finding a proper model for the distribution of transformer failures is to find a hazard function that is consistent with the known failure rate of transformers. The lifetime of a t ...
Aalborg Universitet Hierarchical Control with Virtual Resistance Optimization for Efficiency Enhancement
Aalborg Universitet Hierarchical Control with Virtual Resistance Optimization for Efficiency Enhancement

Power Factor Improvement of Induction Motor by Using Capacitors
Power Factor Improvement of Induction Motor by Using Capacitors

... achieved by decreasing the network losses and improving the main electric load operation to a better efficiency level. The designed scheme is concerned with improving the power factor of the distribution network by adding shunt capacitors to the network at optimal size and location. Industrial power ...
Power MOSFET Electrical Characteristics
Power MOSFET Electrical Characteristics

...  Toshiba Corporation, and its subsidiaries and affiliates (collectively "TOSHIBA"), reserve the right to make changes to the information in this document, and related hardware, software and systems (collectively "Product") without notice.  This document and any information herein may not be reprod ...
10A Advanced Power Conditioner
10A Advanced Power Conditioner

... While delivering your power, your AC tap also delivers a significant amount of line noise. This is due to many reasons: the widening popularity of switching power supplies and the harmonics they backfeed into our AC power mains, the deterioration of our power grid from age and use, and the noise pol ...
2139000 - ESCIES
2139000 - ESCIES

... differential amplifier with the other input terminal signal ground. ...
High Temperature (>200  C) Isolated Gate Drive Topologies for
High Temperature (>200 C) Isolated Gate Drive Topologies for

... A digital isolator IC1 is applied to electrically isolate the PWM signal from the high voltage and feeds a subsequent integrated driver circuit IC2 that generates the JFET gate voltage ugs . IC1 and IC2 are connected to a transformer-isolated auxiliary power supply. Circuit extensions can provide be ...
rtfx harmonic problems in capacitor banks
rtfx harmonic problems in capacitor banks

... 30% of harmonics in the current, will normally cause around 3% harmonics in the voltage. However a capacitor bank may increase the voltage harmonics to 8% or more. Tip: To know the effect of the capacitor bank on the harmonics, compare measurements of harmonics with and without connected capacitor b ...
Compact Power Line Shelves Features Description
Compact Power Line Shelves Features Description

... • Routing of the DC output cables should guarantee that cables are not in contact with sources of heat and surfaces that may damage the cable insulation. • The DC output is not provided with a fuse or circuit breaker suitable for branch circuit protection. Therefore, the power shelf should be mounte ...
the Canon DSLR Power Supply Datasheet
the Canon DSLR Power Supply Datasheet

... directly from Digikey at www.digikey.com. However, other parts may be substituted as required – for example – if you decided to buy your components from your local Radio Shack. Its important though that R2 and R3 be 1% tolerance resistors as this determines the output voltage regulation setpoint. ...
1.0 Introduction - Electrical and Computer Engineering
1.0 Introduction - Electrical and Computer Engineering

user guide - KRK Systems
user guide - KRK Systems

Lecture 1: AC Fundamental
Lecture 1: AC Fundamental

... Chapter (15): AC Fundamentals  Sinusoidal ac Voltage One complete variation is referred to as a cycle. Starting at zero, the voltage increases to a positive peak amplitude, decreases to zero, changes polarity, increases to a negative peak amplitude, then returns again to zero.  Since the waveform ...
Introduction - AudioFaiDaTe
Introduction - AudioFaiDaTe

... 180Vpp is typical.. Bandwidth at this stage should be greater than 80kHz @ -3dB without the 300B's installed The output stage consists of a pair of Svetlana SV300B in pushpull driving an output transformer of at least 3K primary impedance. (See parts list for recommendations here..) The output stage ...
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Islanding

Islanding refers to the condition in which a distributed generator (DG) continues to power a location even though electrical grid power from the electric utility is no longer present. Islanding can be dangerous to utility workers, who may not realize that a circuit is still powered, and it may prevent automatic re-connection of devices. For that reason, distributed generators must detect islanding and immediately stop producing power; this is referred to as anti-islanding.The common example of islanding is a grid supply line that has solar panels attached to it. In the case of a blackout, the solar panels will continue to deliver power as long as irradiance is sufficient. In this case, the supply line becomes an ""island"" with power surrounded by a ""sea"" of unpowered lines. For this reason, solar inverters that are designed to supply power to the grid are generally required to have some sort of automatic anti-islanding circuitry in them.In intentional islanding, the generator disconnects from the grid, and forces the distributed generator to power the local circuit. This is often used as a power backup system for buildings that normally sell their excess power to the grid.
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