• 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
Physics in Action
Physics in Action

Surface Mount Voltage Controlled Oscillator DCS 1800 - 1900 MHz MLO81100-01850 Features
Surface Mount Voltage Controlled Oscillator DCS 1800 - 1900 MHz MLO81100-01850 Features

... 1. All specifications apply with a 50 ohm load impedance. 2. Tuning voltages shown are the minimum and maximum voltages required to tune the frequency range including temperature effects -20°C to +70°C. Devices will oscillate normally with tuning voltages from 0V to +10V. 3. Output power window incl ...
Low Voltage Power Supply Current Source
Low Voltage Power Supply Current Source

Advanced Computer Architecture
Advanced Computer Architecture

A High Linearity Darlington Intermediate Frequency (IF
A High Linearity Darlington Intermediate Frequency (IF

... has a very flat gain response and most of the circuit components are integrated. It achieves a third-order intercept point (IP3) greater than 43 dBm and a noise figure (NF) less than 2 dB across a wide frequency range of 30 to 1000 MHz. From: Vol. 53 | No. 11 | November Supplement 2010 | Page 18 by ...
2 inputs and 2 outputs, current and voltage S20
2 inputs and 2 outputs, current and voltage S20

... These modules are designed for use within an IndraControl S20 station. They are used for acquiring and outputting analog current and voltage standard signals. The modules are connected via a 2-wire connection with a shield connection. ...
4. I-V characteristics of electric conductors KL
4. I-V characteristics of electric conductors KL

... • Ohmic resistor: Using the value for the maximum power dissipation P given on the resistor and the maximum voltage provided by the source, calculate the maximum current expected and choose the range of the amperemeter accordingly. Measure the characteristics over the full range in steps of 5 V, rec ...
Variable 3 - 24 Volt / 3 Amp Power Supply Variable Voltage and
Variable 3 - 24 Volt / 3 Amp Power Supply Variable Voltage and

chapter sb basic applications of: operational transconductance
chapter sb basic applications of: operational transconductance

... bias current that controls the gain in a manner similar to the two quadrant transconductance multiplier (see chapter 5c on VGA design). There are no resistors on the chip instead a series of transistor current mirrors are used. The output is a current rather than a voltage. The fact that the OTA is ...
Linear Systems Offers Direct Alternative for Analog Devices MAT01
Linear Systems Offers Direct Alternative for Analog Devices MAT01

... Notes:  1. Absolute Maximum ratings are limiting values above which serviceability may be impaired 2. The reverse base‐to‐emitter voltage must never exceed 6.2 volts; the reverse base‐to‐emitter current must never exceed 10µA.  ...
Resistive Sensors and the DataLogger
Resistive Sensors and the DataLogger

How to control multiple voltages with the Room Controller
How to control multiple voltages with the Room Controller

... The Room Controller is typically connected to a single feeding 20A circuit which powers the controller and the controlled loads. In the event that your application requires mixed voltages, an alternative voltage switchpack may be connected to the Room Controller. Any Greengate switchpack may be wire ...
HS1R Auxiliary Lighting Unit
HS1R Auxiliary Lighting Unit

... The HS1R auxiliary lighting unit provides additional lighting when you need it most. The fixture's unique design makes it adaptable to many applications. The HS1R can be used as a free standing unit, or it can be wall mounted using the keyhole slots provided. A 6-foot cord and plug are provided for ...
RIC 2011
RIC 2011

... NRC Staff Positions on Offsite Circuit / Station Distribution Design Interface • The offsite electric power system is the preferred source of power to the plant • Voltage calculations should demonstrate voltage requirements of all plant components are satisfied in all conditions • Voltage analysis, ...
CONSTANT FREQUENCY-UNIFIED POWER QUALITY
CONSTANT FREQUENCY-UNIFIED POWER QUALITY

... The aim of this project is to maintain the constant frequency in the utility using constant frequency unified power quality conditioning system (CF-UPQC) consists of a unified power quality conditioner (UPQC) and a Matrix converter based frequency changer. UPQC is a combination of series active and ...
SW1/SW2 - Mega El
SW1/SW2 - Mega El

... IN SW1/SW2: The SW1 and SW2 trigger is designed to control pumps, fans, burners etc. ...
Electricity Unit Test Review
Electricity Unit Test Review



... a ). only two current coils and two pressure coils .b. )only one current coil and two pressure coil .c. ) only two current coils and one pressure coil .d. ) only current coil ...
Nov-2nd-circuit
Nov-2nd-circuit

... the values. In this case it is 30 ohms. Note that, as a quick check on calculations, the value of the equivalent resistance is always higher than the value of the highest value resistance.  If these resistors were connected across a 30 Volt battery then Ohms Law says 1 amp would flow. Some example ...
two load line of vdb amplifier
two load line of vdb amplifier

603 A DIGITAL PROGRAMMABLE ROBOT
603 A DIGITAL PROGRAMMABLE ROBOT

... MOTORS RUN WELL ONLY WHEN GEARS ARE TURINING AT A CERTAIN SPEED. A PROPER COMBINATION OF THE RIGHT KINDS OF GEARS IS A MUST TO CONTROL THE SPEED AND PRODUCE THE REQUIRED TORQUE. ...
Measuring Input Offset Voltage
Measuring Input Offset Voltage

R and X in Series
R and X in Series

... Remember that changes in the base current in a transistor cause the collector current to change. If the base current changes due to an applied AC signal, the collector current will change in the same way. As the collector current changes, the voltage drop across resistor RC changes, causing the ...
Capacitors
Capacitors

In this new setup, the current flowing across the Pt100/polysilicon...
In this new setup, the current flowing across the Pt100/polysilicon...

... Although the current-dependant behavior of polysilicon resistors shown in Figure 145 could indeed have been modeled to some extent, this was not deemed a safe policy when aiming at providing precision temperature measurements for PCR operation and, therefore, steps were taken to mitigate or eradicat ...
< 1 ... 2042 2043 2044 2045 2046 2047 2048 2049 2050 ... 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