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1D electromagnetic band gap structure formed by plasma
1D electromagnetic band gap structure formed by plasma

ME 104: Fall 2001 - UCSB College of Engineering
ME 104: Fall 2001 - UCSB College of Engineering

... 5. If the DC bias VDC in your circuit is between 125 to 175 mV, you do not need to adjust VDC so you can skip the next three steps and proceed directly to Experiment #2. 6. If the DC bias VDC in your circuit is outside of the range 125-175 mV, proceed as follows. Place the ruler flat on your table. ...
www.Jameco.com 1-800-831-4242 Jameco Part Number 115300
www.Jameco.com 1-800-831-4242 Jameco Part Number 115300

... Long-term input offset voltage stability refers to the average trend line of V OS versus. Time over extended periods after the first 30 days of operation. Excluding the initial hour of operation, changes in V OS during the first 30 days are typically 2.5 mV. Refer to typical performance curve. ...
Mechanic industrial electronics  SYLLABUS FOR THE TRADE OF
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... due to increase in temperature and hence stabilisation, requirements of a biasing circuit. collector current, Biasing of transistor. Different types of biasing-Fixed bias, collector feed back bias. Check the effect on operating point Emitter feed back fixed bias circuit, voltage (Vce/Ic) in a fixed ...
Asymmetrical Duty Cycle Controlled Edge Resonant Soft Switching
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DS1135 3-in-1 High-Speed Silicon Delay Line FEATURES PIN ASSIGNMENT
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... them in a wide range of applications. 1) The Overload capacity is large. 2) They are not polarized; thus can be used in both ...
AN60-038 - Mini Circuits
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... Directivity (active directivity) is defined as the difference between isolation and forward gain in dB. It is an indication of the isolation of the source from the load, or how much the load impedance affects the input impedance and the source impedance affects the output impedance. The higher the ...
Lecture Notes - Nodal and Mesh Analysis of Phasor Ciruits
Lecture Notes - Nodal and Mesh Analysis of Phasor Ciruits

Part 2
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... Power Hub • Purpose: – Regulate input voltage into the circuit – Allows for flexible power supplies that can be used for your robot (input 7V – 36V; output 5V) – Most ICs and electronic components use 5V ...
Components in series and parallel
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... reciprocal to get the value of Rtot. It is unusual (at A-level) for questions to involve more than two resistors in parallel so it is worth pointing out that the parallel formula for two resistors can be rearranged to give: Rtot = R1 R2 / (R1+R2) or ‘product over sum’. This can save the faint-hearte ...
NAS3XXX SMT Non-Isolated Point-of
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... to be used in applications where traditionally isolated converter has to be used, achieving significant cost, space, and performance advantages. The output voltage of this converter can be programmed in the range of 5V – 15.5V. The wide input/output voltage ranges, high power density, and user-frien ...
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measurement of phase angles with the help of the cathode ray tube

... , gri~ current has a certain mean value -{g. The yalue "" of ig, h_oweve;r, depends closely upon the height' of the sine peaks which must be cut off by the whole ,arrangement., If the connections are arranged for a given height of these peaks, i.e. for a given amplitude of the voltages whose phases ...
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... 1. (a) Calculate the source current for the network as shown in figure 1a using stardelta transformation. ...
Aalborg Universitet
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... Another drawback of current mode converters is that the decision point for controlling the switching of the MOSFETs is made during the ON time of the upper MOSFET, where current level and system noise are high. Noise filtering is needed and this results in certain limitations with respect to the min ...
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... The charge cycle begins when the voltage at the VIN pin rises above the UVLO level, a current set resistor is pin outputs a logic low to indicate that the charge cycle is connected from the ISET pin to ground. The ongoing. At the beginning of the charge cycle, if the voltage at FB pin is below 3V, t ...
Linear Four-Quadrant Multiplier
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... side of the multiplier exhibits a second order nonlinearity whereas the “X” side exhibits a simple nonlinearity. By making the RY resistor approximately twice the value of the RX resistor, the linearity on both the “X” and “Y” sides are made equal. The selection of the RX and RY resistor values is d ...
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MAX3942 10Gbps Modulator Driver General Description Features
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... modulators at data rates up to 10.7Gbps. It functions as a modulation circuit, with an integrated control op amp externally programmed by a DC voltage. A high-bandwidth, fully differential signal path is internally implemented to minimize jitter accumulation. When a clock signal is available, the in ...
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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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