• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
MAX9248/MAX9250 27-Bit, 2.5MHz to 42MHz DC-Balanced LVDS Deserializers General Description
MAX9248/MAX9250 27-Bit, 2.5MHz to 42MHz DC-Balanced LVDS Deserializers General Description

... advantage of video timing to reduce the serial-data rate. The MAX9248/MAX9250 pair with the MAX9247 serializer to form a complete digital video transmission system. For operating frequencies less than 35MHz, the MAX9248/ MAX9250 can also pair with the MAX9217 serializer. The MAX9248 features spread- ...
XC1700Product Specification V4.0 (1/96)
XC1700Product Specification V4.0 (1/96)

0.8 GHz to 2.7 GHz Direct Conversion Quadrature Demodulator AD8347
0.8 GHz to 2.7 GHz Direct Conversion Quadrature Demodulator AD8347

ppt
ppt

... Take a complex-looking circuit like... ...and turn into a simple-looking circuit like ...
Document
Document

... Take a complex-looking circuit like... ...and turn into a simple-looking circuit like ...
EMF and internal resistance
EMF and internal resistance

... Sometimes it is desirable to have a high internal resistance. Ask the class what happens if a 1.5 V cell is shorted - i.e. its terminals are connected together by a wire of zero resistance? Some might think I = V / R with R = 0 should mean that an infinite current would flow (limited by other physic ...
Appendix F - Testing Results of Electrical Components
Appendix F - Testing Results of Electrical Components

... proper mechanism for opening or closing the valve required the push button be depressed for at least 5s. After completing this action, if open, the valve will close and vice-versa. This 5s delay was included as was part of a safety mechanism to avoid unwanted opening of the valve if the button was h ...
150LECTURE11CHAPTER11INDUCTORS Lecture Notes Page
150LECTURE11CHAPTER11INDUCTORS Lecture Notes Page

... Time constants After 1 T, the inductor’s current is 63.2 % of final value. After 2 T, the inductor’s current is 86.5 % of final value. After 3 T, the inductor’s current is 95.0 % of final value. After 4 T, the inductor’s current is 98.2 % of final value. After 5 T, the inductor’s current is 99.3 % o ...
Institutionen för systemteknik Department of Electrical Engineering Applications
Institutionen för systemteknik Department of Electrical Engineering Applications

... low gate leakage currents for non-speed critical circuit parts. The transistors have three threshold voltage options - high, standard and low Vt . The available transistors with their main features are summarized in table 1.1. As the design of the chip is targeted towards low power supply voltages a ...
Frequently Asked Questions About OHP Lamps
Frequently Asked Questions About OHP Lamps

... If a large number of new overhead projectors are placed in service at the same time, most of the lamps could fail around the same point in time causing it to seem as though the new overhead projectors are using lamps excessively. After the overhead projectors have been used for some time, the lamp r ...
5_3_IOP_notes - Animated Science
5_3_IOP_notes - Animated Science

373-ELR Earth Leakage Protection Relay
373-ELR Earth Leakage Protection Relay

Power Solutions
Power Solutions

... The CPx200/250 models (see fig.1a) are equipped with two independent high efficient 2-switch forward converters, switching 180° out of phase to minimize the ripple current at the input. On the secondary side, two high-current synchronous rectifiers supply Vo1 (5 V) and Vo2 (3.3 V) with up to 40 A. T ...
lightning arrestor
lightning arrestor

ICS86004-01
ICS86004-01

... DISCLAIMER Integrated Device Technology, Inc. (IDT) reserves the right to modify the products and/or specifications described herein at any time, without notice, at IDT's sole discretion. Performance specifications and operating parameters of the described products are determined in an independent s ...
Author Guidelines for ACES Journal Paper (16 pt bold)
Author Guidelines for ACES Journal Paper (16 pt bold)

... parasitics are circuit elements (resistance, inductance, or capacitance) that are possessed by electrical components, but are not desirable for them to have it. So far, various algorithms were introduced to eliminate or minimize the effects of these unwanted elements [2-4]. Previously, methods based ...
Online chapter for Alternating Current circuits
Online chapter for Alternating Current circuits

... difference across the capacitor, so these combine to 6.0 volts. The potential difference across the resistor has the opposite polarity, so we subtract that 4.0 volts from the 6.0 volts to get a net potential difference of 2.0 V, with the right end having the higher potential. Key ideas: The three di ...
Saturated Load Noise Margin Analysis
Saturated Load Noise Margin Analysis

SKYE Dimmers Fan Controls Spec Sheet
SKYE Dimmers Fan Controls Spec Sheet

... low-voltage, and 8A fluorescent lighting. These units are ideal for residential and light commercial applications and are compatible with Cooper Wiring Devices Decorator style devices and wallplates. Preset units feature a preset “ON/OFF” switch that automatically returns controlled light(s) to a pr ...
Input Source Impedance and Its Effects on DC
Input Source Impedance and Its Effects on DC

... Equation (6) states that RE should be smaller than ri . However, from (7) it is clear that if RE is made too small, for example, by using highquality input capacitors for CE, the system could be under-damped and start to oscillate. For this reason, ceramic and film input capacitors are not recommen ...
Principles of Electronic Communication Systems
Principles of Electronic Communication Systems

... A tuned circuit at the output of the mixer selects the difference frequency, or intermediate frequency (IF). The local oscillator is made tunable so that its frequency can be adjusted over a relatively wide range. © 2008 The McGraw-Hill Companies ...
VDD! VDD! GND! GND! - University of California, Berkeley
VDD! VDD! GND! GND! - University of California, Berkeley

AD5282 数据手册DataSheet下载
AD5282 数据手册DataSheet下载

... VAB = VDD, wiper (VW) = no connect. ...
Lab 1: The Digital Multimeter
Lab 1: The Digital Multimeter

... Agilent E3630A triple output dc power supply, drawn in Fig. 1.1, and one Agilent 34401A digital multimeter, drawn in Fig. 1.2. The multimeter can be used as a voltmeter, ammeter, or ohmmeter, depending on how it is configured. The workstations have other equipment, which will be investigated in more ...
Slide 1
Slide 1

... it should in the vivarium, ensuring the health of reptilian pets. The analysis of existing products to ensure there are not any systems exactly the same as the improvement I will induce. I can also retain ideas from existing products (while considering copyright laws) to help enhance the system. T ...
< 1 ... 508 509 510 511 512 513 514 515 516 ... 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.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report