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CEPC CMOS pixel test setup development progress
CEPC CMOS pixel test setup development progress

Indirect optical control of microwave circuits and antennas
Indirect optical control of microwave circuits and antennas

... Opening in Mask ...
CBC34813-M5C - Cymbet Corporation
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... The out-of-band filtering networks are placed in the bias networks outside of the chip. Finally, in order to enable individual tuning of each stage, each bias signal is routed separately up to the DC pads. Due to the limitation of eight DC pads, because of the available DC probes, then the drain vol ...
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... Compounds. A compound is a substance which contains two or more elements chemically joined together. Eg: Water (Hydrogen and Oxygen); Salt (Sodium and Chlorine); Sulphuric Acid (Hydrogen, Oxygen and Sulphur). Mixtures. A mixture consists of elements or compounds which are brought together by a physi ...
International Electrical Engineering Journal (IEEJ) Vol. 6 (2015) No.6, pp. 1917-1924
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Aalborg Universitet Controlled Single Phase Islanded Microgrids

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micom P342 / 343 / 344 / 345

... active, reactive and apparent power can be enabled if required. A third harmonic neutral over voltage protection is also provided for applications where the measurement is available at the terminal end of the generator. The blocking features of the under voltage lement are not required for this appl ...
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... in case of squirrel cage induction motors, rotor has copper bars, which are short circuited at both ends. Hence it is not possible to add any external resistance in the rotor circuit. In case of slip ring induction motors, rotor has 3-phase star connected winding whose terminals are connected to thr ...
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ASCO Model 460 Guide Specifications (word version)

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IGBT Driver Calculation

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... An understanding of how resistance affects voltage and current will help you understand and trouble shoot automotive electrical circuits by explaining what values you should get while using a DVOM. This will help you diagnose automotive electrical problems quicker and more accurately. ...
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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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