• 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
Switchgear repair and Update
Switchgear repair and Update

M.Tech.: Mechatronics Product Design Lecture Notes
M.Tech.: Mechatronics Product Design Lecture Notes

TMP708 - Texas Instruments
TMP708 - Texas Instruments

... Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been de ...
SIMULATION OF A PARALLEL RESONANT CIRCUIT  ECE562: Power Electronics I
SIMULATION OF A PARALLEL RESONANT CIRCUIT ECE562: Power Electronics I

... MATLAB and NL5 to better familiarize the student with some of its operating characteristics. This lab will explore some of the following aspects of the parallel resonant circuit: • Input impedance • Magnitude and phase margin ...
Series and Shunt Compensation
Series and Shunt Compensation

Optimal Structures for Voltage Controllers in Inverters
Optimal Structures for Voltage Controllers in Inverters

... high switching frequency, the switch cycle average of v̂inv follows the command vinv [8]. The inductance, L, and capacitance, C, filter high-frequency harmonics generated by the switching action. R accounts for ohmic losses in the inductor and r is the branch resistance which interfaces the inverter ...
PC250 Test Board for the A250
PC250 Test Board for the A250

... AC coupling is often a more convient and safer method to connect the detector when the lowest noise performance is not required. In this configuration the HV bias is applied through the PC250 test board. In order to configure the board for AC coupling the user must do the following: ...
MC3421712175
MC3421712175

MAX9633 Dual 36V Op Amp for 18-Bit SAR ADC Front-End EVALUATION KIT AVAILABLE
MAX9633 Dual 36V Op Amp for 18-Bit SAR ADC Front-End EVALUATION KIT AVAILABLE

... excessive differential voltage (Figure 1). Therefore, IN+ and IN- can be any voltage within the range shown in the Absolute Maximum Ratings. Note the protection time is still dependent on the package thermal limits. ...
U-132 Power Factor Correction Using UC3852
U-132 Power Factor Correction Using UC3852

... Switching frequency varies with the steady state line and load operating conditions along with the instantaneous input line voltage. Generally, the PFC converter is designed to operate above the audible range after accommodating all circuit and component tolerances. Many applications can use thirty ...
Physics 215 - Experiment 11 Series and Parallel Circuits
Physics 215 - Experiment 11 Series and Parallel Circuits

... and Fig. 11-5). Resistors are said to be in ...
ComLSI IP Portfolio
ComLSI IP Portfolio

... CBDS can operate from low operating voltages such as 1V with 500mV signal swing, or 1V differentially. Lower voltage reduces power correspondingly. CBDS can be self-terminating. Eliminating source termination, which halves transmitted signals, CBDS improves SNR by a factor of 2X over LVDS instances ...
Filters
Filters

... • As the name would indicate, a band-pass filter (BPF) will allow signals of a desired frequency to ‘pass’ into the circuit, but at the same time it rejects all other unwanted frequencies. • The last lesson showed us that a series resonant circuit has a frequency response characteristic similar to t ...
Monday - James K Beard
Monday - James K Beard

datasheet search site | www.alldatasheet.com
datasheet search site | www.alldatasheet.com

Electrical safety mgmc
Electrical safety mgmc

designing of a low cost metal detector for demining project
designing of a low cost metal detector for demining project

... magnetism & listening between the pulses for signals due to eddy current set up in any metal object present in the field. Despite their sensitivity they have few important drawbacks. Their battery consumption is heavy due to the power required by the pulsed transmitter, and they are extremely sensit ...
BB4102386391
BB4102386391

Luminous Chessboard
Luminous Chessboard

... Function Generator ............................................................................................................................... 5 LED ................................................................................................................................................... ...
Universidad de Puerto Rico
Universidad de Puerto Rico

... a) Current and applied voltage oscillate in phase. b) Frequency of the applied voltage is equal to the natural frequency of the LC circuit. c) Power consumption in the circuit is the maximum possible consumption under the alternating applied voltage. d) Peak voltage at the resistance is the maximum ...
Longform Datasheet - Artesyn Embedded Technologies
Longform Datasheet - Artesyn Embedded Technologies

... High efficiency - typically 94% for 5 V in and 3.3 V out SIL POL converter that saves board space Industry standard footprint Remote ON/OFF Available RoHS compliant ...
VHF Linear using 2x 4cx250b
VHF Linear using 2x 4cx250b

TPS51511 数据资料 dataSheet 下载
TPS51511 数据资料 dataSheet 下载

... TPS51511 is an integrated power-management solution that combines a synchronous buck controller and a high-current, source-only, low-dropout linear regulator (LDO) in a small 20-pin QFN package. Each output provides voltages required by typical graphic-system applications. The switching-mode power s ...
LP2950/LP2951 Series of Adjustable Micropower Voltage Regulators Series General Description
LP2950/LP2951 Series of Adjustable Micropower Voltage Regulators Series General Description

... conditions for the 8-pin versions are FEEDBACK tied to VTAP, OUTPUT tied to SENSE, and VSHUTDOWN ≤ 0.8V. Note 3: Guaranteed and 100% production tested. Note 4: Guaranteed but not 100% production tested. These limits are not used to calculate outgoing AQL levels. Note 5: Dropout Voltage is defined as ...
CCU COUPLING CAPACITORS for Power Line Carrier systems
CCU COUPLING CAPACITORS for Power Line Carrier systems

... aluminium foil electrodes. ...
< 1 ... 1301 1302 1303 1304 1305 1306 1307 1308 1309 ... 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