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

Document
Document

... they try to get away from each other as best as they can • Provide them with a way out and they will take it! (John Travoltage!) ...
Study Guide for the test on Electricity and Magnetism. Name Atoms
Study Guide for the test on Electricity and Magnetism. Name Atoms

FAN1539B / FAN1540B — 1A/1.3A, LDO with Low Quiescent Current
FAN1539B / FAN1540B — 1A/1.3A, LDO with Low Quiescent Current

Datasheet
Datasheet

... DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support de ...
Direct Current Circuits
Direct Current Circuits

Buck Boost Converter Seminar.pdf
Buck Boost Converter Seminar.pdf

resistive SWR bridge final copy
resistive SWR bridge final copy

A. Use of current limited power supply (Topward TPS
A. Use of current limited power supply (Topward TPS

... the measured voltage is half of the supply voltage. If the voltage drop is the same then they have to have the same impedance (i.e. the meter input impedance is the same as R1). Error due to high or low frequency (AC voltage measurement): The meter responds differently to different voltage levels, f ...
LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034 B.Sc. DEGREE EXAMINATION  PHYSICS
LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034 B.Sc. DEGREE EXAMINATION  PHYSICS

... weighted D/A Converter. 18. Explain with a neat diagram how i) a resistor ii) a transistor and iii) a diode is fabricated in an integrating circuit. 19. Draw the block diagram of INTEL 8085 and explain the same in detail. 20. Discuss the various types of addressing modes of INTEL 8085 with suitable ...
Ohm`s Law - Physics Concepts Ltd
Ohm`s Law - Physics Concepts Ltd

... Professor Laithwaite of Imperial College was the inspiration behind this program. He encouraged the use of plumbing analogies for teaching electricity, and this program is dedicated to his memory. The plumbing analogy is designed to try and encourage class discussion and to consider the many similar ...
Ohms Law - ClassNet
Ohms Law - ClassNet

... When you are using mathematical formulas to decipher components of ohms law Amperage is symbolized by the Capital letter (I). Now you are wondering why use the letter (I) seeing as Current starts with a (C). The reason is back in the 1700’s most of the scientists that were working on experiments de ...
RC Time Constant Lab
RC Time Constant Lab

... To do this, we measure a resistance and capacitance (out of circuit), and then we measure the voltage on the capacitor as a function of time when it is decaying in series through the resistor. Is R times C measured (out of circuit) the same as R times C determined by using the exponential formula? 1 ...
Electronics for Artists
Electronics for Artists

Note-A-Rific: Kirchhoff
Note-A-Rific: Kirchhoff

... We sometimes encounter a circuit that is too complicated for simple analysis. • Maybe there is a mix of series and parallel, or more than one power source. • To deal with such complicated circuits, we use Kirchhoff’s rules, invented by G. R. Kirchhoff (1824-1887) • His rules are just convenient appl ...
Technical Description
Technical Description

... The original manufacturer shall operate under ISO 9001:2008 or equivalent Quality Management System with manufacturing of Precision high current programmable DC Power Supplies under the scope of certification. The Certifying Body (CB) must be accredited as per applicable International Standard ISO 1 ...
Neon Application Information2017
Neon Application Information2017

EE1100 Basic Electrical Engineering
EE1100 Basic Electrical Engineering

fault-relay reo1 - Hansen Electric spol. s ro
fault-relay reo1 - Hansen Electric spol. s ro

... Earth leakage relay UP6R is used for supervision over the state of isolation of electric networks and connected devices. After reduction of isolation resistance below the set-up value of the circuit, the relay signals failure by means of its contacts. The electronic overcurrent relay LH86 along with ...
CH2O/M-10 - membrapor
CH2O/M-10 - membrapor

... The data contained in this document is for guidance only. Membrapor AG accepts no liability for any consequential losses, injury or damage resulting from the use of this document or from any omissions or errors herein. Customers should test under their own conditions, to ensure that the sensors are ...
CB61F
CB61F

... intended to clearly present comprehensive product data and provide technical information that will help the end user with design applications. Cooper Bussmann reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products ...
Parallel circuits
Parallel circuits

... Parallel circuits(two or more series circuits connected to the same energy source). ...
A Constant-current Source - BYU Physics and Astronomy
A Constant-current Source - BYU Physics and Astronomy

... Two of the capacitors in this circuit serve as low-pass filters to reduce high-frequency noise in the output current. The first, C3, is a 0.01 µF capacitor in parallel with the current output. This capacitor is added to reduce the level of high-frequency noise at the current output. The value of thi ...
PowerPoint – Elec L9 – V I Graphs
PowerPoint – Elec L9 – V I Graphs

Bipolar Junction Transistor (BJT) Modeling
Bipolar Junction Transistor (BJT) Modeling

< 1 ... 2004 2005 2006 2007 2008 2009 2010 2011 2012 ... 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.
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