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ADVAC® - Advanced Design Vacuum Circuit Breakers
ADVAC® - Advanced Design Vacuum Circuit Breakers

Model DRC-93C - Lake Shore Cryotronics, Inc.
Model DRC-93C - Lake Shore Cryotronics, Inc.

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... The Live wire alternates between high positive and high negative voltage with an average of about 230V The neutral wire is always at 0V. Electricity normally flows in and out of the live and neutral wires only No Messing Resources c ...
certification impact analysis: ul/iec 60950-1
certification impact analysis: ul/iec 60950-1

... the latest versions of the UL and IEC Standards for Safety of Information Technology Equipment (ITE) and their predecessors. In particular, IEC 60950-1 Second Edition and UL 60950-1 Second Edition are being analyzed and compared to their predecessors, IEC 609501 First Edition and UL 60950-1 First Ed ...
CA132059EN
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... fuse General Eaton designs its Cooper Power™ series K-Limiter fuse to be conveniently applied as an add-on, backup, current-limiting fuse and as an extension of Eaton's Cooper Power series NX™ Companion® II fuse. The K-Limiter back-up fuse will interrupt high fault current and at the same time, limi ...
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... The TWL1200 is an 19-bit voltage translator specifically designed to seamlessly bridge the 1.8-V/2.6-V digital-switching compatibility gap between 2.6-V baseband and the TI Wi-Link-6 (WL1271/3). It is optimized for SDIO, UART, and audio functions. The TWL1200 has two supply-voltage pins, VCCA and VC ...
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AM3 AM2 Performance Tuning Guide
AM3 AM2 Performance Tuning Guide

... actually applying the HT reference clock adjustment. In many cases the HT reference clock margin can be limited by the System Memory clock. If this is the case, it is a good idea to adjust the System Memory settings to a lower value from the System BIOS [e.g. adjust Memclk mode from DDR2-800(400MHz) ...
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Application Manual Power Semiconductors

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... We can see that layout #5 with 123 vias achieves about 95 % of total reduction of the thermal resistance. After that adding more vias (or increasing copper pad size accordingly) starts to become a matter of diminishing return. By increasing number of vias from 123 to 210 the PCB thermal resistance ...
TopCon series DC power supply
TopCon series DC power supply

... make further system adjustments via this software. If you follow all the information given, you will save time and possibly queries during commissioning. Knowledge of these operating instructions is important for you also because improper usage may cause damage both to the electrical power supply an ...
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586 Capacity of Distribution Feeders for Hosting DER

... It is also a common requirement that the aggregate DER capacity within the MV network of a HV/MV substation should not exceed the installed transformer capacity of the substation at N-1 conditions, possibly taking into account the annual minimum substation load (correction coefficients may apply, fu ...
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HF5 - Manual v2.10 (808.37 KB )

Power 2 You - Lattice Semiconductor
Power 2 You - Lattice Semiconductor

ni elvis i
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... The NI-ELVIS hardware is warranted against defects in materials and workmanship for a period of one year from the date of shipment, as evidenced by receipts or other documentation. National Instruments will, at its option, repair or replace equipment that proves to be defective during the warranty p ...
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... are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marki ...
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... load short-circuit flows for a long time, it may cause smoke and fire. To prevent this, configure an external safety circuit, such as a fuse. ● Configure a circuit so that the programmable controller is turned on first and then the external power supply. If the external power supply is turned on fir ...
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Electronic Ballasts - Lighting Research Center
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... operate lamps at 20–60 kHz. These electronic ballasts have approximately half the power loss of magnetic ballasts. Lamp efficacy also increases (by approximately 10–15% compared to 60-Hz operation) when the lamp operates at a frequency above 20 kHz. See Figure 3 and the sidebar “Choice of Frequency ...
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Heavy-ion-induced breakdown in ultra-thin gate

Chapter 7 Performing Transient Analysis
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... overrides the LVLTIM=2 setting made by METHOD=GEAR.) TRAP (trapezoidal) integration generally results in reduced program execution time, with more accurate results. However, trapezoidal integration can introduce an apparent oscillation on printed or plotted nodes that might not be caused by circuit ...
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Resistive opto-isolator



Resistive opto-isolator (RO), also called photoresistive opto-isolator, vactrol (after a genericized trademark introduced by Vactec, Inc. in the 1960s), analog opto-isolator or lamp-coupled photocell, is an optoelectronic device consisting of a source and detector of light, which are optically coupled and electrically isolated from each other. The light source is usually a light-emitting diode (LED), a miniature incandescent lamp, or sometimes a neon lamp, whereas the detector is a semiconductor-based photoresistor made of cadmium selenide (CdSe) or cadmium sulfide (CdS). The source and detector are coupled through a transparent glue or through the air.Electrically, RO is a resistance controlled by the current flowing through the light source. In the dark state, the resistance typically exceeds a few MOhm; when illuminated, it decreases as the inverse of the light intensity. In contrast to the photodiode and phototransistor, the photoresistor can operate in both the AC and DC circuits and have a voltage of several hundred volts across it. The harmonic distortions of the output current by the RO are typically within 0.1% at voltages below 0.5 V.RO is the first and the slowest opto-isolator: its switching time exceeds 1 ms, and for the lamp-based models can reach hundreds of milliseconds. Parasitic capacitance limits the frequency range of the photoresistor by ultrasonic frequencies. Cadmium-based photoresistors exhibit a ""memory effect"": their resistance depends on the illumination history; it also drifts during the illumination and stabilizes within hours, or even weeks for high-sensitivity models. Heating induces irreversible degradation of ROs, whereas cooling to below −25 °C dramatically increases the response time. Therefore, ROs were mostly replaced in the 1970s by the faster and more stable photodiodes and photoresistors. ROs are still used in some sound equipment, guitar amplifiers and analog synthesizers owing to their good electrical isolation, low signal distortion and ease of circuit design.
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