• 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
Application Note AN-940
Application Note AN-940

... 1. Basic Characteristics of P-Channel HEXFET Power MOSFETs Like their N-Channel counterparts, P-Channel HEXFET Power MOSFETs are enhancement mode devices. A voltage between the gate and the source terminals enhances the conductivity and allows current to flow, while no drain current flows when the g ...
CMY 210 GaAs MMIC
CMY 210 GaAs MMIC

... The LO-Buffer needs an external inductor L4 at port 4; the value of inductance depends on the LO frequency. It is tuned for minimum Iop consumption into port 4. At lower LO frequencies it can be reduced by an additonal capacitor C5. Note 3: The LO Input impedance at Port 3 can be matched with a seri ...
Authorized Dealer: – SIEMENS LTD, WAGO TERMINALS, TEKNIC
Authorized Dealer: – SIEMENS LTD, WAGO TERMINALS, TEKNIC

... Email: - [email protected] / [email protected] Website: - www.mnassociates.co.in ...
Sensors - skillbank
Sensors - skillbank

4991_Chapter_3_Fall_..
4991_Chapter_3_Fall_..

... 1. Sign onto Blackboard, if still have not 2. Keep practicing Nodal Analysis 3. Practice Mesh Analysis 4. Learn about rest of chapter 3, particularly about equivalent circuits ...
THE MICROCC—A MICROAMP-RANGE CONSTANT
THE MICROCC—A MICROAMP-RANGE CONSTANT

EVALUATION AND DESIGN SUPPORT CIRCUIT FUNCTION AND BENEFITS
EVALUATION AND DESIGN SUPPORT CIRCUIT FUNCTION AND BENEFITS

... final output. Achieving the required output phase matching and settling time can be a challenge, especially at low power levels. The circuit shown in Figure 1 uses the AD8475 differential funnel amplifier to perform attenuation, level shifting, and conversion to differential without the need for any ...
1 The MOS Transistor Inverter Static Characteristics I
1 The MOS Transistor Inverter Static Characteristics I

Technical Report: Overview of a Wireless Local Area
Technical Report: Overview of a Wireless Local Area

... When preparing the layout for the circuit, spacing for the amplifier and other components must be allotted to allow room for soldering the components. This is done in the Libra simulation software. The artwork for a transistor can be used to prepare space for the amplifier since there is no amplifie ...
AN9789: Audio Quality Measurement Primer
AN9789: Audio Quality Measurement Primer

... function, to account for the ear’s non-ideal perception of loudness at different frequencies, is one such example of the subjective quality of audio. In the early 1950s, transistors had just been invented. Audio amplifiers built with these devices offered better signal to noise, harmonic distortion, ...
Dual Differential Line Driver With 3-State Outputs
Dual Differential Line Driver With 3-State Outputs

Evaluates:  MAX1774 MAX1774 Evaluation Kit General Description Features
Evaluates: MAX1774 MAX1774 Evaluation Kit General Description Features

... The MAX1774 EV kit contains a dual step-down switching converter and backup converter. A +3.3V main output provides up to 1.5A, and a +1.8V core output provides up to 500mA of current. The EV kit operates from a +2.7V to +5.5V input voltage range. See Evaluating High-Input-Voltage Operation to recon ...
TVS Diode Array SPA SP724 Datasheet
TVS Diode Array SPA SP724 Datasheet

... Peak Transient Current Capability for Long Duration Surges The peak transient current capability is inversely proportional to the width of the current pulse. Testing was done to fully evaluate the SP724’s ability to withstand long duration current pulses using the circuit of Figure 4. Figure 5 shows ...
Signal conditioning instruments and communication
Signal conditioning instruments and communication

... a variety of measuring tasks, such as e.g. level, gauge, differential pressure, process pressure, distance, interface and temperature measurement. ...
Wide VIN power management ICs simplify White
Wide VIN power management ICs simplify White

ca18 power amplifier
ca18 power amplifier

... Each channel shall have a standard (factory-set) input sensitivity of .775 volt, and shall be fitted with an external switch which allows the gain to be altered to X20 or X40. The hum and noise level shall be 115 dB below rated output, “A” weighted. SMPTE IMD shall be less than 0.01% at rated power, ...
KSX  SElF-rEgUlATing	HEATing	CAblE ™
KSX SElF-rEgUlATing HEATing CAblE ™

UBA Ultrasonic Fork Sensors - WayCon Positionsmesstechnik
UBA Ultrasonic Fork Sensors - WayCon Positionsmesstechnik

Design of high-speed, low-power frequency dividers and phase
Design of high-speed, low-power frequency dividers and phase

ip ch 35 Practice Test
ip ch 35 Practice Test

KE2316991705
KE2316991705

Slide 1
Slide 1

AD8300 数据手册DataSheet 下载
AD8300 数据手册DataSheet 下载

... power supply be bypassed on the same PC card that contains the chip. Figure 8 shows the power supply rejection versus frequency performance. This should be taken into account when using higher frequency switched-mode power supplies with ripple frequencies of 100 kHz and higher. ...
Electrical characteristics - Teaching Advanced Physics
Electrical characteristics - Teaching Advanced Physics

... Students determine the V-I characteristics for a carbon resistor, semiconductor diode and filament lamp. This activity is best carried out individually (if space and apparatus allows this) so that each student has to construct and test his/her own circuit. One of the dangers of always working in pai ...
Single Resistor Sets Positive or Negative Output for DC/DC Converter
Single Resistor Sets Positive or Negative Output for DC/DC Converter

< 1 ... 1245 1246 1247 1248 1249 1250 1251 1252 1253 ... 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