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MAX5812 12-Bit Low-Power, 2-Wire, Serial Voltage-Output DAC General Description
MAX5812 12-Bit Low-Power, 2-Wire, Serial Voltage-Output DAC General Description

... The MAX5812 recognizes a STOP condition at any point during transmission except when a STOP condition occurs in the same high pulse as a START condition (Figure 3). This condition is not a legal I2C format, at least one clock pulse must separate any START and STOP conditions. Repeated START Conditio ...
A Reference Design for DWDM Pump Lasers
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Analog Devices Welcomes Hittite Microwave Corporation
Analog Devices Welcomes Hittite Microwave Corporation

... The HMC5929LS6 is a 4 stage GaAs pHEMT MMIC 1 Watt Power Amplifier which operates between 40 and 43.5 GHz. The amplifier provides 19 dB of gain, +30 dBm of saturated output power, and 15% PAE from a +6V supply. With an excellent IP3 of +36 dBm, the HMC5929LS6 is ideal for high linearity applications ...
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Aalborg Universitet Distributed Voltage Unbalance Compensation in Islanded Microgrids by Using Dynamic-Consensus-Algorithm
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... may incur voltage unbalance causing instability and additional power losses. Series or shunt active power filters [2]–[9] are conventional solutions for unbalance compensation. In case of MG system, in order to save the investment for extra compensation equipment, DGs can be employed as distributed ...
ancillary service details: voltage control
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... loading), reactive losses are greater than real losses. At full line loading, reactive losses are five times greater than real losses for a 230-kV line and nine times higher for a 345- kV line. (At 50% of line loading, the factors are two and four for the 230- and 345-kV lines, respectively.) ...
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Fast digital calibration procedure for STPM01 based energy meters
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Principles of Electrosurgery
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... Erbe’s introduction of regulated electrosurgery in the 1980s was a great advancement. Modern electrosurgical units continuously monitor current and voltage, derive parameters such as power and tissue resistance, and analyze them. Depending on the desired effect, these devices can keep the operating ...
MAX5811 10-Bit, Low-Power, 2-Wire Interface, Serial, Voltage-Output DAC General Description
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a Complete 8-Bit, 32 MSPS, 95 mW CMOS A/D Converter AD9280
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SIGNAL TOWER
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ThunderPower 610
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... 30 seconds. If the balancer connector is not attached, simply press [INC] to skip the balancer checking mode. 3. If a balancer is connected to the data port, you can find the balancer model name, imbalance and pack voltage. It takes at least 10-30 seconds to get the balancer data. 4. Initial charge: ...
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New techniques for inverter flux control
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... vector is chosen when the error magnitude becomes less than a specified tolerance. An active vector is chosen if the error magnitude exceeds the tolerance. The strategy for choosing the active vector is reported to reduce the number of switchings per output cycle compared to the “fish” method of [6] ...
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... 20 in response to one primary electron from the photocathode, they can be treated by Poisson distribution in general, and the average number of secondary electrons becomes the secondary electoron emission ratio δ. This holds true for multiplication processes in the subsequent dynodes. Accordingly, f ...
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... G6A16 What will happen to the resistance if the temperature of a resistor is increased? A. It will change depending on the resistor’s reactance coefficient B. It will stay the same C. It will change depending on the resistor's temperature coefficient D. It will become time dependent ...
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... The iron cored coil is a common nonlinear element in series ferroresonant circuit. The behavior of the transformer core under transient condition in ferroresonant circuit needs different approach then that in steady condition(2,3,4,7) The analysis of transformer core is very much desirable in transi ...
Colonial brochure - US Architectural Lighting
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... halide lamps produce the same light levels as before while consuming 20 - 25% less energy. Modern bulb configurations combine with optical systems to produce new levels of efficiency and precision. Add to this the proliferation of LED’s in outdoor lighting realizing power reductions of up to 50% whi ...
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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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