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Exploiting PV Inverters to Support Local Voltage—A Small
Exploiting PV Inverters to Support Local Voltage—A Small

Slide 1
Slide 1

Application Note Applications for Depletion MOSFETs
Application Note Applications for Depletion MOSFETs

PowerPoint Presentation - 3
PowerPoint Presentation - 3

... sensor - specific device ...
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GT3412451250
GT3412451250

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... at REFOUT. The output stage can source and sink current so REFOUT can settle to the correct voltage quickly in response to code-dependent loading changes. Typically, source current is 5mA and sink current is 100µA. REFOUT connects the internal reference to the R-2R DAC ladder at REFIN. The R-2R ladd ...
MAX2180AEVKIT.pdf
MAX2180AEVKIT.pdf

... generators into AMIN on the EV kit. Because the signal generators can interact, generating distortion products of their own, it is important to provide sufficient isolation between them. One way to do this is using attenuators on the generator outputs. ...
Tunable PowerArc - Optical Building Blocks Corporation
Tunable PowerArc - Optical Building Blocks Corporation

... You can either get your water directly from the cold-water tap (can be a problem if the water is hard or when water is not available) or from an inexpensive circulating water bath option that we provide. We have selected water-cooling over air: because it allows us to make a more compact housing; se ...
Basic Bridge Circuits - Scientific Devices Australia
Basic Bridge Circuits - Scientific Devices Australia

... designed to interface with Category 1 full bridge circuits with options for Category 2 half and quarter bridge topologies. This module’s predominant application is in industrial strain gage instrumentation applications; however, it is well-suited for any bridge type instrumentation application. Data ...
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... Photodiodes and ADC The ISL29033 contains two photodiode arrays that convert light into current. The spectral response for ambient light sensing and infrared (IR) sensing is shown in Figure 8 on page 12. After light is converted to current during the light signal process, the current output is conve ...
LTC1732-4
LTC1732-4

... and the battery remains connected to the charger, a new charge cycle will begin if the battery voltage drops below 4.05V because of a load on the battery or self discharge. For either version, to force a new charge cycle, regardless of previous conditions, momentarily lift the program resistor or re ...
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... should not present a composite flash rate in the field of view which exceeds five (5) hz at the operating voltage of the strobes. Cooper notification also strongly recommends that the intensity and composite flash rate of installed strobes comply with levels established by applicable laws, standards ...
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... simplify the construction of accurate and efficient chargers. These devices use analog inputs to control charge current and voltage, and can be programmed by the host or hardwired. The MAX1908/MAX8724/MAX8765/ MAX8765A achieve high efficiency using a buck topology with synchronous rectification. The ...
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Differential Amplifiers/Demo

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... mixed signal circuits as well as digital blocks. As the complexity of a system grows, it becomes more and more important to implement the system simulation and top-down design methodology as well. In this paper, we have designed a phase locked loop using Verilog and Xilinx .Considering the rapid gro ...
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LTC2377-20 - 20-Bit, 500ksps, Low Power SAR

One of the first things you learn about operational amplifiers (op
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Wide range soft switching PWM three
Wide range soft switching PWM three

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Modular Inverter Series INV

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Pull-up Resistors - SparkFun Electronics
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... capacitor coupled with the pull-up resistor, thus forming a RC filter, and RC filters take some time to charge and discharge. If you have a really fast changing signal (like USB), a high value pull-up resistor can limit the speed at which the pin can reliably change state. This is why you will often ...
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... DC A ZERO (For ACDC-52NAV, ACDC-54NAV Only) Remove the jaw out of the conductor. Press HOLD Key > 2 seconds to compensate the residual magnetism. ...
< 1 ... 631 632 633 634 635 636 637 638 639 ... 2207 >

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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