• 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
Make an ioniser.
Make an ioniser.

... careful to tin all the connections with solder before assembling them since soldering four loose connections together can be quite awkward, even when the capacitors have been stuck together rigidly. As a timely reminder, the diodes should all point with their marker band towards the mains end of the ...
CIRCUIT FUNCTION AND BENEFITS
CIRCUIT FUNCTION AND BENEFITS

... The circuit configurations illustrated in Figure 1 shows how an AD8022 op amp can be used to convert a bipolar single-ended signal into a unipolar differential signal that can be applied directly to the AD7265 analog inputs. The circuit not only performs the single-ended-to-differential conversion b ...
Electricity Definitions and Usage
Electricity Definitions and Usage

DE-ACCM5G - Dimension Engineering
DE-ACCM5G - Dimension Engineering

Integrator Op Amp Amplifier Circuit Diagram
Integrator Op Amp Amplifier Circuit Diagram

Exam with Model Answer
Exam with Model Answer

... positive feedback path along with a potentiometer voltage divider. The value of this capacitance is: C n ...
LM1 Series
LM1 Series

... restoration of AC current after a power failure, the charger provides a high charge rate. The charge circuit reacts to the condition of the battery and alters the rate of charge in order to maintain peak battery capacity and maximize battery life. Solid-state construction recharges the battery follo ...
BP5011
BP5011

... The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM and other parties. ...
Effect of harmonics on current ratings and voltage drop
Effect of harmonics on current ratings and voltage drop

... Multiplying the 50 Hz conductor resistance by the appropriate factor, Cr, from the above table will give the resistance at that frequency. If Cr x Rf is substituted for Rh in equation 2 it is clear that Rf will cancel in the numerator and the denominator. Thus the factors given in Table 1 can be use ...
ZVN4525E6 250V N-CHANNEL ENHANCEMENT MODE MOSFET SUMMARY
ZVN4525E6 250V N-CHANNEL ENHANCEMENT MODE MOSFET SUMMARY

... 250V N-CHANNEL ENHANCEMENT MODE MOSFET ...
BlueSolar charge controller MPPT 70/15
BlueSolar charge controller MPPT 70/15

... and the “end of discharge” state. This mode of operation (no regular full recharge) will destroy a leadacid battery within weeks or months. The BatteryLife algorithm will monitor the state of charge of the battery and day by day slightly increase the load disconnect level until absorption voltage is ...
CONTROL OF ELECTRICAL APPLIANCES THROUGH TV REMOTE
CONTROL OF ELECTRICAL APPLIANCES THROUGH TV REMOTE

EUP7182 50mA Low-Noise Ultra Low-Dropout CMOS Regulator with Fault Indicator
EUP7182 50mA Low-Noise Ultra Low-Dropout CMOS Regulator with Fault Indicator

... ground significantly reduces noise on the regulator output. This cap is connected directly to a high impedance node in the bandgap reference circuit. Any significant loading on this node will cause a change on the regulated output voltage. For this reason, DC leakage current through this pin must be ...
Analog-Digital Conversion
Analog-Digital Conversion

... • Manufacture may be simplified if there are fewer different resistor values to purchase, stock, and sort prior to assembly. • By constructing a different kind of resistor network on the input of our summing circuit, we can achieve the same kind of binary weighting with only two kinds of resistor va ...
Experiment 4: Op-Amp Circuits Objective: EQUIPMENT AND PARTS
Experiment 4: Op-Amp Circuits Objective: EQUIPMENT AND PARTS

600 V, 1.0 A Power Rectifier
600 V, 1.0 A Power Rectifier

... can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals," must be validated for each customer application by customer’s technical experts. SCILLC shall not be held liable for any claim or suits with regard to a third party’s ...
ICL7660 Voltage level Converter
ICL7660 Voltage level Converter

... A typical example of this is an RS-232 Interface where the output must go to a positive as well as a negative voltage. The ICL7660 was made exactly for such a purpose. The ICL7660 is a fairly simple circuit. It has an oscillator with its own internal components that generates a 10 KHz signal, four s ...
Measurment and Ohm`s LAw
Measurment and Ohm`s LAw

... There is unaccounted for resistance in the wires etc. Applied voltage may fluctuate Human error may disturb measurements Components have tolerance (not always exact values) As components change temperature, resistance may also change ...
CAST LED Tree Light (CTLED141) Product Information
CAST LED Tree Light (CTLED141) Product Information

... construction of the CAST Tree Light with the industry’s most advanced LED module. Features: ◗◗ Replaceable LED module (MR-16 size) thermally bonded to solid bronze body for optimal heat dissipation. ◗◗ Replaceable optics for 41º (included), 21º, and 12º (sold separately). ...
Series and Parallel Circuits
Series and Parallel Circuits

... Draw a series circuit with two 1.5 V batteries, 3 resistors, and a current of 0.5 A. What is the total voltage of the circuit? What is the resistance of each resistor? What is the voltage drop across each resistor? Label it on your circuit. ...
Chapter 26 - galileo.harvard.edu
Chapter 26 - galileo.harvard.edu

... RC Circuits • How is a simple RC series circuit (battery, resistor, capacitor in series) diagramed? • Derive the equations representing what is happening in this circuit. • How is a proposed solution checked to see if it is a solution? • What is the form of the solution, (mathematically and graphic ...
LRS-100 series
LRS-100 series

... Universal AC input / Full range Withstand 300VAC surge input for 5 second Protections: Short circuit / Overload / Over voltage Cooling by free air convection Miniature size and 1U low profile Compliance to IEC/EN 60335-1(PD3) and ...
Unit 2 Test - hhs-snc1d
Unit 2 Test - hhs-snc1d

... Unit 2 Test SNC 1D ...
Current - St John Brebeuf
Current - St John Brebeuf

... 7) Calculate the voltage supply needed to produce a current of 12A when used with a 48 ohm resistor ...
Microcontroller based substation monitoring and control system
Microcontroller based substation monitoring and control system

... The purpose of this project is to monitor and control various electrical devices within the substation. The parameters that will be monitored include the voltage, current, frequency and circuit breaker status. It can be extended to monitor the Transformer temperature. It also trips the circuit break ...
< 1 ... 2067 2068 2069 2070 2071 2072 2073 2074 2075 ... 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