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1 Current 2 Resistance and Ohm`s Law
1 Current 2 Resistance and Ohm`s Law

ELECTRIC CIRCUITS Chapter Twenty: Electric Circuits 20.1 Charge
ELECTRIC CIRCUITS Chapter Twenty: Electric Circuits 20.1 Charge

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OP1177/OP2177/OP4177

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HI-200, HI-201 Datasheet
HI-200, HI-201 Datasheet

Physics 121 Practice Problem Solutions 07 Current and Resistance
Physics 121 Practice Problem Solutions 07 Current and Resistance

IOSR Journal of Computer Engineering (IOSR-JCE) e-ISSN: 2278-0661,p-ISSN: 2278-8727, PP 17-20 www.iosrjournals.org
IOSR Journal of Computer Engineering (IOSR-JCE) e-ISSN: 2278-0661,p-ISSN: 2278-8727, PP 17-20 www.iosrjournals.org

Lab-07-Operational-Amplifiers
Lab-07-Operational-Amplifiers

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... The Electronic Ratio Box is designed to give a permanent fixed ratio signal output from a continuously varying input signal. This could be any variable frequency signal in an automotive, marine or industrial environment, eg/ Speedo hall effect or transducer, Tachometer – magnetic pick up, alternator ...
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NCP304A Voltage Detector Series
NCP304A Voltage Detector Series

... are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor doe ...
THICK FILM - TTI, Inc.
THICK FILM - TTI, Inc.

... • Flip Chip design reduces TCR as compared to typical commodity chip resistors. • Heavy Copper used for terminations • Increases power handling • Reduces termination resistance • Long-side/Reverse termination available ...
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Advantages of LED

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Electrical Engineering / Electromagnetics Plot voltage versus time
Electrical Engineering / Electromagnetics Plot voltage versus time

... DC or AC refers to how the electrical current is transferred through and from the motor. Both types of motors have different functions and uses. DC electric motors work for situations where speed needs to be control. Single phase AC motors are known as general purpose motors. They work well in many ...
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)

... A high blocking voltage in the off-state and a high current capacity in the on-state – two characteristics associated with power devices – usually exceed the limitations of modern conventional transistors to perform as a high-power switch. The on-resistance of a VDMOS is one of its most important pa ...
datasheet-multiboard rev 1.1 - Scitec Instruments Ltd
datasheet-multiboard rev 1.1 - Scitec Instruments Ltd

Transformers for Low Voltage Lighting
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... cells C and D will go flat first or A and B last longer (1) current/charge passing through cells C and D (per second) is double/more than that passing through A or B (1) energy given to charge passing through cells per second is double or more than in cells C and D (1) or in terms of power ...
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... NIDEC COPAL ELECTRONICS CORP. products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the NIDEC COPAL ELECTRONICS C ...
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... stimulation, the tissue can be modeled in the electrical domain. Despite the fact that the tissue shows a highly nonlinear and non-stationary response, it can be modeled to a first approximation using the linear model ZL depicted in Fig. 1a [5]. Here Rs corresponds to the resistance of the tissue, w ...
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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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