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Aalborg Universitet Switching speed limitations of high power IGBT modules
Aalborg Universitet Switching speed limitations of high power IGBT modules

... gate driver ROFF = 1.8 :. The dc-bus stray inductance at this operating point will create a 25% voltage overshoot and the active clamping circuit in the gate driver is not active. An example of the RBSOA for the used power module is shown in Figure 10, for a 1996 A turnoff current, switching to 1256 ...
Mimicking the colourful wing scale structure of the
Mimicking the colourful wing scale structure of the

Model 282A-1 Digital Stat-Arc™ 3 Electrostatic Fieldmeter
Model 282A-1 Digital Stat-Arc™ 3 Electrostatic Fieldmeter

... 2. Discharge the instrument Grounding (discharging) your body discharges the instrument through its conductive case. If you are not wearing a grounded wriststrap, discharge your body by touching a grounded metal object such as water pipe, conduit or workbench. As an alternative, place a grounded wri ...
Transformers and Electromagnetic Waves Practice Problems
Transformers and Electromagnetic Waves Practice Problems

... Transformers 1. Explain in your own words how a transformer works. What happens to cause a transformer to output electricity? 2. What uses do transformers have? Where are some places where you might find transformers. 3. Which coil, primary or secondary, has more windings in a step-up transformer? E ...
Understanding LDMOS device fundamentals
Understanding LDMOS device fundamentals

... that have been used to designate various aspects of the lateral device and often stands for lateral current (L) double-diffused MOS (DMOS). These devices can be created in two common types, the PMOS (p-type MOSFET) and NMOS (n-type MOSFET), but this paper will focus on NMOS only. Figures 1 and 2 dep ...
MAX3737 Multirate Laser Driver with Extinction Ratio Control General Description
MAX3737 Multirate Laser Driver with Extinction Ratio Control General Description

... The MAX3737 is a 3.3V laser driver designed for multirate transceiver modules with data rates from 155Mbps to 2.7Gbps. Lasers can be DC-coupled to the MAX3737 for reduced component count and ease of multirate operation. Laser extinction ratio control (ERC) combines the features of automatic power co ...
RF2705G LOW NOISE, MULTI-MODE, QUAD-BAND, QUADRATURE MODULATOR AND PA DRIVER Features
RF2705G LOW NOISE, MULTI-MODE, QUAD-BAND, QUADRATURE MODULATOR AND PA DRIVER Features

... Exceeding any one or a combination of the Absolute Maximum Rating conditions may cause permanent damage to the device. Extended application of Absolute Maximum Rating conditions to the device may reduce device reliability. Specified typical performance or functional operation of the device under Abs ...
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... available in multiple CCTs: 3000K, 3500K, 4000K and 5000K. Rated and tested to LM-79 and LM-80 standards. The LEDs are also binned to a 3-step MacAdam ellipse to achieve consistent color from fixture to fixture. ELECTRICAL - Powered by high-quality constant-current power LED drivers which are rated ...
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... of a voltage divider and zener diodes. The resistors R1, R2 and R3 ensure the gate-source charge for the switch, while the zener diodes D3 and D4 set the maximum voltage value (360 V) across the bulk capacitor. An NTC limits the inrush current and ensures Q1 operation inside its safe operating area. ...
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AT-6000 GDS Ground Fault Detection System

... power to the rotor and transmit data off the rotor. It provides reliable transmission of data which is unaffected by electrical noise, dirt, or contamination. During normal operation, power to operate the transmitter circuitry is transferred from the stationary antenna loop as a radio frequency. ...
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Matrix Converter Bi-directional Switch Power Loss and Cooling

... current direction that allows safe commutation of inductive load current and reduce commutation losses [5]. For more efficient space usage IGBTs with built in anti parallel diodes can be used. As in any commutated converter power losses in MC consist of conduction losses and commutation losses. Cond ...
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... file to display. Your netlist RTLinv.sp should be listed, otherwise, switch to the correct directory using the tab or the arrows. Once you have found your netlist, double-click on RTLinv.sp, which should open the Results Browser. To view the transient waveforms, click on Transient: Simple RTL Invert ...
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... 302 inputs are transformer-balanced. The isolation characteristics of transformers are superior to other balancing techniques for the hostile and uncontrolled environments of field production. Transformers provide galvanic isolation from the driving source, meaning there is no direct electrical conn ...
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Resistor Circuits Lab

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MAX16826 Programmable, Four-String HB LED Driver with Output-Voltage Optimization and Fault Detection
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... The MAX16826 contains a current-mode PWM switching regulator controller that regulates the output voltage to the LED array. The switching regulator section is configurable as a boost or SEPIC converter and its switching frequency is programmable from 100kHz to 1MHz. The MAX16826 includes 4 channels ...
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... Primitive, but familiar - Just a simple contactor in circuit between the motor and supply giving only unsynchronised on-off control  No control over inrush currents or torque surge at start up  Very rapid acceleration of load with large transient forces placed on drive train and electrical system ...
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Real and Reactive Power Sensor

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... in AC mode. A. Select “Narrow” setting for general electrical appliance such as TUBE LIGHT, ENERGY SAVING LAMP, TV, JUICER & MIXER etc. It is not suitable for high-power motor or inductive load, such as the fridge of 1KW, the motor of 800W, AIR COOLER(having risk of rebooting) and so on. In this mod ...
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... If the pattern is too close to the input block and coupling occurs, a sudden fluctuation in the voltage on the IGBT output side might affect the photocoupler’s LED input, leading to malfunction or degradation of characteristics. (If the pattern needs to be close to the input block, to prevent the LE ...
High-Accuracy Temperature Measurements Call for Platinum
High-Accuracy Temperature Measurements Call for Platinum

... industrial and medical applications is the platinum resistance temperature (RT) detector, or PRTD. Platinum is very stable and not affected by corrosion or oxidation. Nickel, copper, and other metals can also be used for RTDs, but those materials are less popular because they are not as stable or re ...
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SMBJ5V0(C)A - SMBJ170(C)A 600 Watt Transient Voltage Suppressors SMBJ5V0(C)A - SMBJ1

... cause the failure of the life support device or system, or to affect its safety or effectiveness. accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. ANTI-COUNTERFEITING POLICY Fairchild Semiconductor Corporation's ...
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SN65LVDS33 数据资料 dataSheet 下载

... The receivers can withstand ±15 kV human-body model (HBM) and ±600 V machine model (MM) electrostatic discharges to the receiver input pins with respect to ground without damage. This provides reliability in cabled and other connections where potentially damaging noise is always a threat. The receiv ...
MAX5270 Octal, 13-Bit Voltage-Output DAC with Parallel Interface General Description
MAX5270 Octal, 13-Bit Voltage-Output DAC with Parallel Interface General Description

... The MAX5270 contains eight 13-bit, voltage-output digital-to-analog converters (DACs). On-chip precision output amplifiers provide the voltage outputs. The device operates from +12V/-12V supplies. Its output voltage swing ranges from 0V to +8.192V and is achieved with no external components. The MAX ...
Harmonics mitigation and solutions
Harmonics mitigation and solutions

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Opto-isolator



In electronics, an opto-isolator, also called an optocoupler, photocoupler, or optical isolator, is a component that transfers electrical signals between two isolated circuits by using light. Opto-isolators prevent high voltages from affecting the system receiving the signal. Commercially available opto-isolators withstand input-to-output voltages up to 10 kV and voltage transients with speeds up to 10 kV/μs.A common type of opto-isolator consists of an LED and a phototransistor in the same opaque package. Other types of source-sensor combinations include LED-photodiode, LED-LASCR, and lamp-photoresistor pairs. Usually opto-isolators transfer digital (on-off) signals, but some techniques allow them to be used with analog signals.
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