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TPS2458 ATCA? AdvancedMC? Controller With I2C Evaluation
TPS2458 ATCA? AdvancedMC? Controller With I2C Evaluation

3D ICs: An Opportunity for Fully-Integrated, Dense and - Hal-CEA
3D ICs: An Opportunity for Fully-Integrated, Dense and - Hal-CEA

... solutions. Switched capacitor converters (SCCs) have been well studied to alleviate this problem. This approach offers easier on-chip integration thanks to the high capacitance density in recent CMOS technologies [2], [11]. However, SCCs also have different drawbacks such as efficiency dependence on ...
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AN-9005 Driving and Layout Design for Fast Switching

DATA  SHEET BC856; BC857; BC858 PNP general purpose transistors
DATA SHEET BC856; BC857; BC858 PNP general purpose transistors

... Right to make changes ⎯ NXP Semiconductors reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. This document supersedes and replaces all information supplied prior to the p ...
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PPT - Electrical and Computer Engineering

Ballistic electron focusing by elliptic reflecting barriers
Ballistic electron focusing by elliptic reflecting barriers

Line-type radar modulators - Naval Postgraduate School
Line-type radar modulators - Naval Postgraduate School

HI-3000 Rev. F - Holt Integrated Circuits
HI-3000 Rev. F - Holt Integrated Circuits

... 8 PIN PLASTIC NARROW BODY SOIC (8HN) (HI-3000 or HI-3001 only) ...
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Bipolar Junction Transistor Modeling Topics for - SMDP-VLSI

The phasor current is
The phasor current is

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eyh 2016 dragonfly manual

... LEDs emit light, when an appropriate voltage (called a turn on voltage) is applied. • The 2 LEDs will be used as your dragonfly’s eyes! ...
AN#51
AN#51

... are characterized by a quick charge and discharge regime, high power density and long cycle life. These devices are rated to support over one million cycles. ...
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MAX221E ±15kV ESD-Protected, +5V, 1µA, Single RS-232 Transceiver with AutoShutdown General Description

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reotron mew 2-s-60/400-dp 24

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Lecture 26 slides - Digilent Learn site

... • Sinusoidal input; we want the steady state response • Apply a conceptual input consisting of a complex exponential input with the same frequency, amplitude and phase • The actual input is the real part of the conceptual input ...
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Study of SVC component in transmission line for

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chapter 12 Power Amplifiers

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FEATURES PIN ASSIGNMENT

... is first applied by the user. This parameter is assured by component selection, process control, and design. It is not measured directly during production testing. 10. Each DS1245 has a built-in switch that disconnects the lithium source until VCC is first applied by the user. The expected tDR is de ...
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Evaluates: DS2710 DS2710 Evaluation Kit General Description Features

... external resistor from the TMR pin to VSS (R7). Resistors can be selected to support fast-charge timeout periods of 0.5hr to 5hr and top-off charge timeout periods of 0.25hr to 2.5hr. The programmed charge time approximately follows the equation: t = 1.5 x RTMR (Ω)/1000 (time in minutes) The default ...
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Solar Panels - The Cricket Indoor Location System

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(A) Find the current in the circuit.

...  The charge decreases exponentially  At t =  = RC, the charge decreases to 0.368 Qmax  In other words, in one time ...
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HMC905LP3E - Analog Devices

... The HMC905LP3E is a high performance RF divider. Such dividers are high gain devices with internal feedback. The device will oscillate if used with AC coupled RF inputs and if no RF input is applied. Normally, if the RF input signal is removed the device should be disabled, or it should be placed in ...
The most common errors with the digital units are indicated with
The most common errors with the digital units are indicated with

Technical Update - Ripple Current Capabilities
Technical Update - Ripple Current Capabilities

< 1 ... 665 666 667 668 669 670 671 672 673 ... 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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