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Powder Material for Inductor Cores
Powder Material for Inductor Cores

... that the voltages in the circuit is lowered and therefore a higher current is needed to keep the same power level. These two considerations puts higher requirements on the inductor and it is therefore interesting to investigate alternative core materials. Traditionally ferrites with air gap have bee ...
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...  Low resistance paths to VDD and ground when needed  High output driving capability increased speed  Input resistance is infinite high fan-out ...
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vacon nxp/c user manual ac drives

... The control I/O-terminals are isolated from the mains potential. However, the relay outputs and other I/O-terminals may have a dangerous control voltage present even when Vacon NX is disconnected from mains. Before connecting the frequency converter to mains make sure that the Vacon NX front and cab ...
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Alpha Series Amplifier (Servo Amplifier Unit) Maintenance Manual
Alpha Series Amplifier (Servo Amplifier Unit) Maintenance Manual

... 1 This circuit breaker is intended to protect the power cord and related equipment. A circuit breaker to protect a servo amplifier unit is provided within the servo amplifier unit. 2 This AC line filter should always be used,so influence by harmonic noise to the power supply can be reduced. When the ...
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... as Service Factor (SF) that may allow continuous operation above the nameplate current rating. If using this Service Factor, the VMX Series starter must be sized for the total amps used. For proper selection of the VMX Series starter when using SF continuously, multiply the nameplate FLA by the stat ...
Intermodulation Distortion in Microwave and Wireless Circuits
Intermodulation Distortion in Microwave and Wireless Circuits

... The effects of nonlinearity on microwave communications became a serious concern in the late 1950s and early 1960s. At that time, most research focused on Volterra methods as the primary tool for nonlinear circuit analysis, and considerable progress was made in developing those techniques. As often ...
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... Note 7: Integral nonlinearity is defined as the deviation of a code from a best fit straight line to the transfer curve. The deviation is measured from the center of the quantization band. Note 8: Offset error is the offset voltage measured from –0.5 LSB when the output code flickers between 00 0000 ...
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MCS 0402 AT, MCT 0603 AT, MCU 0805 AT, MCA 1206 AT

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Differential Signaling

... tighter than for single ended logic. Most device require external termination and bias resistors Does not have capacitance or package spec. This severely limits GHz operation Differential Signaling ...
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... The serial interface is connected to a computer using a FTDI FT232R breakout board. The user may interact with the Touch Potentiometer using a terminal emulator program running on the computer. The Touch Potentiometer implements a simple ASCII command interface described in the section “Command List ...
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... so the symbol should be used only for those JFETs where they are indeed interchangeable. https://store.theartofservice.com/itil-2011-foundation-complete-certification-kit-fourth-edition-study-guide-ebook-and-online-course.html ...
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... Lithium batteries work well as backup batteries because they have very low self-discharge rates and high-energy density. Single lithium batteries with opencircuit voltages of 3.0V to 3.6V are ideal for use with the MAX703/MAX704. Batteries with an open-circuit voltage less than the minimum reset thr ...
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Differential Signaling
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... tighter than for single ended logic. Most device require external termination and bias resistors Does not have capacitance or package spec. This severely limits GHz operation Differential Signaling ...
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... 1. General description The NX3DV2567 is a four-pole double-throw analog switch (4PDT) optimized for switching WLAN-SIM supply, data and control signals. It has one digital select input (S) and four switches each with two independent input/outputs (nY0 and nY1) and a common input/output (nZ). Schmitt ...
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Chapter 7: Sequential Logic Circuits
Chapter 7: Sequential Logic Circuits

... the class of elements called multivibrator circuits. The bistable element, is its most popular representative, but other elements such as monostable and astable circuits are also frequently used. Dynamic memories store state for a short period of time—on the order of milliseconds. They are based on ...
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Agilent 34401A Digital Multimeter

... However, the 34401A may not be used with its HI and LO inputs connected to mains in permanently installed electrical devices such as the main circuit-breaker panel, sub-panel disconnect boxes, or permanently wired motors. Such devices and circuits are subject to overvoltages that may exceed the prot ...
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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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