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E1 Pseudo-Random Test Pattern Common Module
E1 Pseudo-Random Test Pattern Common Module

... Danger: Danger is used to indicate the presence of a hazard that will cause severe personal injury, death, or substantial property damage if the hazard is not avoided. Warning: Warning is used to indicate the presence of a hazard that can cause severe personal injury, death, or substantial property ...
283111 Fire Alarm Submittal Package - NET 12.11.12
283111 Fire Alarm Submittal Package - NET 12.11.12

... building applications, or networked with many devices to protect a large campus or a high-rise office block. Simply add additional peripheral equipment to suit the application. For installations using NFS-320C, an optional ACM Series annunciator can be mounted in the same cabinet (up to 48 zones/poi ...
Vibration measurement
Vibration measurement

P83884
P83884

... 2. Conduit entrances to the backbox should be selected to provide sufficient wiring clearance for the installed product. Do not pass additional wires (used for other than the signaling appliance) through the backbox. Such additional wires could result in insufficient wiring space for the signaling a ...
Troubleshooting a 4/20mA loop
Troubleshooting a 4/20mA loop

BR34E02FVT-3
BR34E02FVT-3

... I2C BUS data communication starts by start condition input, and ends by stop condition input. Data is always 8bit long, ...
SKY77705 数据资料DataSheet下载
SKY77705 数据资料DataSheet下载

... The single Gallium Arsenide (GaAs) Microwave Monolithic Integrated Circuit (MMIC) contains all active circuitry in the module. The MMIC contains on-board bias circuitry, as well as input and interstage matching circuits. Output match into a 50-ohm load is realized off-chip within the module package ...
FREQUENCY DIVIDERS DESIGN FOR MULTI
FREQUENCY DIVIDERS DESIGN FOR MULTI

chapter 5 – cmos amplifiers
chapter 5 – cmos amplifiers

... Characterization of an Amplifier 1.) Large signal static characterization: • Plot of output versus input (transfer curve) • Large signal gain • Output and input swing limits 2.) Small signal static characterization: • AC gain • AC input resistance • AC output resistance 3.) Small signal dynamic char ...
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MAX15112 Evaluation Kit Evaluates: MAX15112 General Description Features

... evaluate the MAX15112 high-efficiency, 12A, step-down regulator with integrated switches. The applications include distributed power systems, portable devices, and preregulators. The EV kit is preset for 1.5V output at load currents up to 12A from a 2.7V to 5.5V input supply. The device features a 1 ...
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Reference Temperatures

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product catalogue - amelec Electronic GmbH

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EC16201

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pat4545278_gagon.pdf

FZT855 Features Mechanical Data
FZT855 Features Mechanical Data

... Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any c ...
Measurement Back-Action in Quantum Point-Contact Charge
Measurement Back-Action in Quantum Point-Contact Charge

... Semiconductor quantum dots (QDs) are islands of a semiconducting material small enough to confine electrons in a region comparable to their Fermi wavelength. They represent electronic quantum systems just like natural atoms, but are much more easily incorporated in macroscopic electric circuits. By ...
LTM4604A - Low Voltage, 4A DC/DC uModule with Tracking
LTM4604A - Low Voltage, 4A DC/DC uModule with Tracking

... The LTM4604A is a standalone non-isolated switch mode DC/DC power supply. It can deliver up to 4A of DC output current with few external input and output capacitors. This module provides a precise regulated output voltage programmable via one external resistor from 0.8V DC to 5.0V DC over a 2.375V t ...
Atmel AT11480: Analog Comparator Application Examples
Atmel AT11480: Analog Comparator Application Examples

... AC, except DEBUG, will be reset to their initial state, and the AC will be disabled. Analog comparator module has selectable hysteresis and propagation delay, the hysteresis and propagation delay are two important properties of the comparator’s dynamic behavior. Both parameters can be adjusted to ac ...
SEMI STEP: Introduction to SEMI S2-0706
SEMI STEP: Introduction to SEMI S2-0706

Document
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... Voltage on gates of inverter transistors same as before All 128 inverter FETs operate in parallel to maintain their common sources at a threshold above gate voltages -> ~V125 => current in inverters defined by resistor value ...
AD5737 数据手册DataSheet下载
AD5737 数据手册DataSheet下载

... Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. N ...
More basic electricity
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Fundamentals Of Electric Circuits-Charles K. Alexander, Matthew
Fundamentals Of Electric Circuits-Charles K. Alexander, Matthew

... is also noted for his work on the theory of hysteresis. Steinmetz was born in Breslau, Germany, and lost his mother at the age of one. As a youth, he was forced to leave Germany because of his political activities just as he was about to complete his doctoral dissertation in mathematics at the Unive ...
Harmonic mitigation Solution Handbook
Harmonic mitigation Solution Handbook

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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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