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Arduino Uno SMD Rev3
Arduino Uno SMD Rev3

FSDH0265RN, FSDM0265RN
FSDH0265RN, FSDM0265RN

... FET when the maximum PWM duty cycle is attained. If the output consumes more than this maximum power, the output voltage (Vo) decreases below its rating voltage. This reduces the current through the opto-coupler LED, which also reduces the opto-coupler transistor current, thus increasing the feedbac ...
The text of the original article (Word 2000 format)
The text of the original article (Word 2000 format)

... other side of the PCB is protected during etching by covering it completely with Contact film (as used to cover school books). By the way, if either of the last two methods of manufacture are used, the track image published will have to be horizontally “flipped” to be useful. Note that all artworks ...
POWER ELECTRONICS NOTES 10ES45
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... Circuit breakers, which are now much more common in homes than they once were, are switches that will open if the current is too high; they can then be reset. ...
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... IN Jack, LEVEL Pot: Audio input and attenuator pot. Maximum gain is unity. FREQ CV Jack and Pot: Sets the center frequency of the phasing effect. Typically, use 0-10V. Negative voltages will cancel the effect (unless biased with the pot) but allow the unprocessed signal through the module. Regenerat ...
Design and Testing of a Self-Powered Wireless Hydrogen
Design and Testing of a Self-Powered Wireless Hydrogen

Transformers - Wellington High School
Transformers - Wellington High School

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HMC431LP4 数据资料DataSheet下载

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... DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, or (c) whose failure to perform when p ...
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CBB 162 IP Series

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the flea - Acoustica.org.uk
the flea - Acoustica.org.uk

... the high frequency components on the rails to ground and provide a local reservoir of energy storage to deal with peaks in demand. If we do this properly, and ensure the loop areas formed by these decoupling components are as small as is practically possible, the radiation drops dramatically. We're ...
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Chapter 5
Chapter 5

... components in which the components are connected such that they provide a single path between two points. Short A circuit condition in which there is zero or an abnormally low resistance between two points; usually an inadvertent condition. Voltage divider A circuit consisting of series resistors ac ...
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Bipolar Transistor 30V 300mA fT;3.5GHz typ. NPN Single PCP

... Collector-to-Emitter Voltage, VCE -- V ...
< 1 ... 1625 1626 1627 1628 1629 1630 1631 1632 1633 ... 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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