• 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
Unit 5* Resistors
Unit 5* Resistors

... specific range. A potentiometer is a variable resistor with three terminals. A rheostat has only two terminals. ...
SP322
SP322

... receiver also has a control pin which places the receiver outputs in a high impedance state. The enable pins will disconnect the internal termination network for whichever mode the SP322 is selected. For the receivers, the enable pin will place the input pins in a high impedance (approx. 15kΩ). This ...
Product Range 2014 Portable Reference Meters
Product Range 2014 Portable Reference Meters

Technical Note 6297: Neutral Conductor Size for Sunny Boy
Technical Note 6297: Neutral Conductor Size for Sunny Boy

CL -CU series Compact Time Delay Relay
CL -CU series Compact Time Delay Relay

... Delay on operate – Delay period begins when input voltage is applied. At the end of the delay period, the relay will operate and will not release until input voltage is removed. Reset occurs when input voltage is reapplied. ...
1730  Calibration Manual Energy Analyzer
1730 Calibration Manual Energy Analyzer

TRANSIENT VOLTAGE SURGE SUPPRESSORS 16709
TRANSIENT VOLTAGE SURGE SUPPRESSORS 16709

Very Low Power, Negative Rail Input, Rail-to
Very Low Power, Negative Rail Input, Rail-to

... The junction-to-board thermal resistance is obtained by simulating in an environment with a ring cold plate fixture to control the PCB temperature, as described in JESD51-8. The junction-to-top characterization parameter, ψJT, estimates the junction temperature of a device in a real system and is ex ...
LTC1569-7 - Linear Phase, DC Accurate, Tunable 10th Order Lowpass Filter
LTC1569-7 - Linear Phase, DC Accurate, Tunable 10th Order Lowpass Filter

... external clock signal. For proper filter operation, the clock waveform should be a squarewave with a duty cycle as close as possible to 50% and CMOS voltages levels (see Electrical Characteristics section for voltage levels). DIV/ CLK pin voltages which exceed the power supply voltages should be avo ...
doc - Cornerstone Robotics
doc - Cornerstone Robotics

transducer - engineeringskills.org
transducer - engineeringskills.org

... • It consist of following parts: 1. Base (carrier) Materials: several types of base material are used to support the wires. Impregnated paper is used for room temp. applications. 2. Adhesive: The adhesive acts as bonding materials. Like other bonding operation, successful starain gauge bonding depen ...
Pulse Width Modulation (PWM)
Pulse Width Modulation (PWM)

D.J. Perreault and V. Caliskan, “Automotive Power Generation and Control,” IEEE Transactions on Power Electronics , Vol. 19, No. 3, May 2004, pp. 618-630.
D.J. Perreault and V. Caliskan, “Automotive Power Generation and Control,” IEEE Transactions on Power Electronics , Vol. 19, No. 3, May 2004, pp. 618-630.

... the peak power capability of the machine across voltage is not achieved at higher speeds. As described above, the output power versus output voltage curves of Fig. 3 are well-suited to an output voltage of 14 V, but not suitable for use at a higher voltage such as 42 V. If one wanted to operate at 4 ...
MAX3222/MAX3232/MAX3241* 3.0V to 5.5V, 300µA Supply Current
MAX3222/MAX3232/MAX3241* 3.0V to 5.5V, 300µA Supply Current

A 24-GHz CMOS Direct-Conversion Sub-Harmonic Downconverter
A 24-GHz CMOS Direct-Conversion Sub-Harmonic Downconverter

... LO Buffer consumes 5 mA each. The total current consumed by the LO circuitry is 15 mA at 1.2 V. For testing purposes, a simple 100 Ω resistive loaded differential pair is used for the IF stage. It provides 1.5 dB of gain. The size of the NMOS transistors was chosen to be 300 um x 0.25 um representin ...
18-Bit, 2.5 LSB INL, 100 kSPS SAR ADC AD7678  FUNCTIONAL BLOCK DIAGRAM
18-Bit, 2.5 LSB INL, 100 kSPS SAR ADC AD7678 FUNCTIONAL BLOCK DIAGRAM

... In all modes except MODE = 3, this output is used as Bit 10 of the parallel port data output bus. When MODE = 3 (serial mode), this output, part of the serial port, is used as a serial data output synchronized to SCLK. Conversion results are stored in an on-chip register. The AD7678 provides the con ...
Transistors Reduced Base Biased Resistance 2-26-2013
Transistors Reduced Base Biased Resistance 2-26-2013

Transforme
Transforme

Fairchild ChipFind - Manufacturer datasheet and components
Fairchild ChipFind - Manufacturer datasheet and components

low harmonic drive packages engineered for you.
low harmonic drive packages engineered for you.

Q4807113117
Q4807113117

MAX14550E Evaluation Kit Evaluates: General Description Features
MAX14550E Evaluation Kit Evaluates: General Description Features

... The MAX14550E EV kit provides a proven layout to evaluate the MAX14550E USB host charger identification analog switch. The D+ and D- lines have 90I differential impedance to meet USB 2.0 signal-integrity specifications. The MAX14550E is powered by VBUS by default. Jumpers and shunts are on the EV ki ...
Physics 212 Sample Question  Bank II 2011
Physics 212 Sample Question Bank II 2011

... in series to a battery. The quantity that is the same for the two wires is: (A) the potential difference across the length of each segment. (B) the current in each segment. (C) the current density in each segment. (D) the electric field in each segment. (E) the electron drift velocity in each segmen ...
BDTIC CoolSET -F3 ICE3A2065ELJ
BDTIC CoolSET -F3 ICE3A2065ELJ

... a new fully integrated Standby Power concept is implemented into the IC. An intelligent Active Burst Mode is used for this Standby Mode. After entering this mode there is still a full control of the power conversion by the secondary side via the same optocoupler that is used for the normal PWM contr ...
User Manual of Brushless Speed Controller
User Manual of Brushless Speed Controller

< 1 ... 301 302 303 304 305 306 307 308 309 ... 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