• 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
design_review
design_review

File - Inderjit Singh
File - Inderjit Singh

... CJ, CJSW, MJ, MJSW and PB. There are two built-in models of the charge storage effects associated with the thin-oxide. The thin-oxide charge storage effects are treated slightly different for the LEVEL=1 model. These voltage-dependent capacitances are included only if TOX is specified in the input d ...
MAX1044/ICL7660 - Switched-Capacitor Voltage Converters
MAX1044/ICL7660 - Switched-Capacitor Voltage Converters

... and 10μF charge-pump capacitors, the output resistance is typically 50Ω. Thus, the output voltage is about -5V under light loads, and decreases to about -4.5V with a 10mA load current. Minor supply voltage variations that are inconsequential to digital circuits can affect some analog circuits. There ...
Design of Three Phase PWM Voltage Source Inverter
Design of Three Phase PWM Voltage Source Inverter

... voltage is disposed into the inverter. Also a unflappable ac output voltage is accessed by regulating the on and off duration of the inverter units. PWM techniques are represented by fixed amplitude pulses. This is the most suitable method of controlling the output voltage. This method is labelled a ...
Theory of Alternating Currents
Theory of Alternating Currents

BDTIC
BDTIC

... Gain from design, speed and flexibility by using this fully programmable, high‑performance RF transmitter. ...
1 Maximum Momentary Output of 17A 2 Parallel Operation Enabled
1 Maximum Momentary Output of 17A 2 Parallel Operation Enabled

Pure Class A operation delivers quality power: 60 watts
Pure Class A operation delivers quality power: 60 watts

... wealth of know-how and expertise over the years. While reflecting this tradition, the A-70 also implements latest technology such as the ultra low-noise instrumentation amplifier principle realized in a discrete configuration, along with optimized signal input and power amplification stages, resulti ...
Modular Marx Topology for High Boost Ratio DC/DC Boost Converter
Modular Marx Topology for High Boost Ratio DC/DC Boost Converter

AND8160/D Compandor Cookbook
AND8160/D Compandor Cookbook

... R2 (20 k) limits input current to the variable gain cell. This current should not exceed an AC peak value of 140 A. Again, an external resistor has to be placed in series with R2 if the input voltage to the variable gain cell exceeds 2.8 V (i.e., 20 k × 140 A). R3 (20 k) acts in conjunction wi ...
CAT4201 - 350 mA High Efficiency Step Down LED Driver
CAT4201 - 350 mA High Efficiency Step Down LED Driver

... The minimum supply voltage required to maintain adequate regulation is set by the cathode terminal voltage of the LED string (i.e., the VBAT voltage minus the LED string voltage). When the LED cathode terminal falls below 3 V, a loss of regulation occurs. For applications which may occasionally need ...
PPT - LSU Physics & Astronomy
PPT - LSU Physics & Astronomy

... Assume the batteries are ideal, and have emf E1=8V, E2=5V, E3=4V, and R1=140 R2=75and R3=2. What is the current in each branch? What is the power delivered by each battery? Which point is at a higher potential, a or b? ...
KEY - Rose
KEY - Rose

... change instantaneously. This is because the potential difference VL  –L(dI/dt) would become infinite for an instantaneous change of current, and that is not physically possible. Because the current through the inductor was zero before the switch was closed, it must still be zero (or very close to ...
application briefs
application briefs

Technology Brief 7: Resistive Sensors
Technology Brief 7: Resistive Sensors

TS1003 - Silicon Labs
TS1003 - Silicon Labs

... supply current ensuring that small form-factor singleor button-cell batteries (exhibiting low mAh charge ratings) could last beyond the operating life of the oxygen sensor. The precision specifications of the TS1003, such as its low offset voltage, low TCVOS, low input bias current, high CMRR, and h ...
MCB-02 car alarm output module mode
MCB-02 car alarm output module mode

Power Devices and ICs
Power Devices and ICs

... Wide Bandgap Power Devices • The electrical and thermal properties of silicon diminish its future prospects • Small bandgap (1.1 eV) and high leakage currents prohibit operation above 200 C • Device on-resistance a strong function of electric field • This electric field of GaN and SiC exceed by aro ...
David Walter - אתר מורי הפיזיקה
David Walter - אתר מורי הפיזיקה

... will change the current through and the power output from a light bulb. Using the circuits site:  To add a component: click and drag the component to the work area.  To remove a component: right click on the middle of the component.  To disconnect a wire: right click on one of the ends of the wir ...
Electromagnetic interference and environment
Electromagnetic interference and environment

... having solid-state electronic equipment. While this is only partly true, you still must protect against lightning. A lightning stroke, which averages about 25,000A at 30 million volts, produces high currents in lines that take a direct hit. Only the lightning voltage and the impedance looking into t ...
Lecture 2-1 Mechanical Transducers
Lecture 2-1 Mechanical Transducers

2# Power Amplifier
2# Power Amplifier

... CLASS B POWER AMPLIFIER ...
Circuit Design - BDJ Engineering
Circuit Design - BDJ Engineering

Construction of a 200 keV Electrostatic Electron Accelerator
Construction of a 200 keV Electrostatic Electron Accelerator

Lecture_7
Lecture_7

... In the RC circuit shown, the battery has fully charged the capacitor, so Q0 = CE. Then at t = 0 the switch is thrown from position a to b. The battery emf is 20.0 V, and the capacitance C = 1.02 μF. The current I is observed to decrease to 0.50 of its initial value in 40 μs. (a) What is the value of ...
< 1 ... 1359 1360 1361 1362 1363 1364 1365 1366 1367 ... 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