• 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
A Simple Clutter Canceling Circuit and Background Noise
A Simple Clutter Canceling Circuit and Background Noise

Lesson 3 – Simple Series Circuits
Lesson 3 – Simple Series Circuits

... What is a circuit? Electrical current powered by an electrical source such as a battery or power supply travels from one of the two terminals of the source, through one or more circuit elements and back to the power source through the second terminal. The circuit element could be wires, lamps, heati ...
Temperature Measurement and Calibration
Temperature Measurement and Calibration

... the resistance changes for a given circuit has to be determined theoretically or empirically, or by a combination of both. In the design of thermistor circuits, one must take the precaution that within the range of the operating conditions; the circuit remains stable at all times. Thermistor resista ...
Input Leakage Current in High Speed Applications
Input Leakage Current in High Speed Applications

Amateur Extra License Class - Wabash Valley Amateur Radio Asso
Amateur Extra License Class - Wabash Valley Amateur Radio Asso

I. Simple Resistor Circuit
I. Simple Resistor Circuit

... have multiple resistors in a circuit as in figure 28-9? To analyze these circuits requires a two-step process. The first step is to determine the equivalent resistance and net current flowing out of the battery. Sample Problem 28-3 demonstrates the first part of the analysis. To reduce the circuit t ...
MJD32C
MJD32C

... Figure 11. Resistive load switching test circuit ...
PHYSICS Paper & Solution CBSE-XII-2014 EXAMINATION CAREER POINT
PHYSICS Paper & Solution CBSE-XII-2014 EXAMINATION CAREER POINT

... A resistance of R Ω draws current from a potentiometer as shown in the figure. The potentiometer has a total resistance Ro Ω. A voltage V is supplied to the potentiometer. Derive an expression for the voltage across R when the sliding contact is in the middle of the potentiometer. V R0 ...
PS9332L, PS9332L2 Data Sheet
PS9332L, PS9332L2 Data Sheet

... (If the pattern needs to be close to the input block, to prevent the LED from lighting during the off state due to the abovementioned coupling, design the input-side circuit so that the bias of the LED is reversed, within the range of the recommended operating conditions, and be sure to thoroughly e ...
Spread Aware™, Ten/Eleven Output Zero Delay Buffer
Spread Aware™, Ten/Eleven Output Zero Delay Buffer

... Feedback Input: This input must be fed by one of the outputs (typically FBOUT) to ensure proper functionality. If the trace between FBIN and FBOUT is equal in length to the traces between the outputs and the signal destinations, then the signals received at the destinations will be synchronized to t ...
Suitable for voltage levels up to 450VDC
Suitable for voltage levels up to 450VDC

APPLICATION BULLETIN
APPLICATION BULLETIN

... IN A SMALL SIGNAL MEASURING APPLICATION SOME OBSERVATIONS ...
Fenix LD75C user manual
Fenix LD75C user manual

SPICE Modeling and Simulation of a MPPT Algorithm
SPICE Modeling and Simulation of a MPPT Algorithm

TPS64200 数据资料 dataSheet 下载
TPS64200 数据资料 dataSheet 下载

... The minimum on-time of the device is 1.6 µs. At light loads, this would cause a low switching frequency in the audible range because the energy transferred to the output during the on-time would cause a higher rise in the output voltage than needed and therefore lead to a long off−time until the out ...
Modeling of PV Array to Study The Effects of Partial Shading
Modeling of PV Array to Study The Effects of Partial Shading

LMH6570 2:1 High Speed Video Multiplexer (Rev. C)
LMH6570 2:1 High Speed Video Multiplexer (Rev. C)

... The LMH6570 is a high-speed 2:1 analog multiplexer, optimized for very high speed and low distortion. With selectable gain and excellent AC performance, the LMH6570 is ideally suited for switching high resolution, presentation grade video signals. The LMH6570 has no internal ground reference. Single ...
DRV601 数据资料 dataSheet 下载
DRV601 数据资料 dataSheet 下载

... DC input-blocking capacitors are required to be added in series with the audio signal into the input pins of the DRV601. These capacitors block the DC portion of the audio source and allow the DRV601 inputs to be properly biased to provide maximum performance. These capacitors form a high-pass filte ...
BDTIC www.BDTIC.com/infineon
BDTIC www.BDTIC.com/infineon

... the amplitude of the current through the high voltage device is only determined by its channel resistance and can be as high as several mA. After the VCC voltage is high enough, the controller controls the high voltage device so that a constant current around 1mA is provided to charge the VCC capaci ...
SFB-G-xx - COTSWORKS
SFB-G-xx - COTSWORKS

MAX941/MAX942/MAX944 High-Speed, Low-Power, 3V/5V, Rail-to-Rail, Single-Supply Comparators General Description
MAX941/MAX942/MAX944 High-Speed, Low-Power, 3V/5V, Rail-to-Rail, Single-Supply Comparators General Description

... protection circuitry consists of two back-to-back diodes between IN+ and IN- as well as two 4.1kΩ resistors (Figure 3). The diodes limit the differential voltage applied to the internal circuitry of the comparators to be no more than 2VF, where VF is the forward voltage drop of the diode (about 0.7V ...
MP4032-1 - Monolithic Power System
MP4032-1 - Monolithic Power System

... Loop Compensation. Connects a compensation network to stabilize the LED driver and get an accurate LED driver current. Multiplier Input. Connect this pin to the tap of resistor divider from the rectified voltage of the AC line. The half-wave sinusoid signal on this pin provides a reference signal fo ...
Unit I
Unit I

... a. The number of transistors required to implement an N fan-in gate is 2N. This can result in a significantly large implementation area. b. The propagation delay of a complementary CMOS gate deteriorates rapidly as a function of the fan-in. 4. What is meant by ratioed logic? In ratioed logic, a gate ...
2SAR562F3
2SAR562F3

Evaluates: MAX1982/MAX1983 MAX1982 Evaluation Kit General Description Features
Evaluates: MAX1982/MAX1983 MAX1982 Evaluation Kit General Description Features

... The MAX1982 evaluation kit (EV kit) provides a regulated 1.2V output voltage while operating on input voltages from 1.25V to 5.5V. It delivers a 0.3A output current from a 1.25V to 2.5V input, with less than 300mV dropout. Operation with higher input voltages (up to 5.5V) is possible as long as the ...
< 1 ... 1135 1136 1137 1138 1139 1140 1141 1142 1143 ... 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