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Presentation Slides
Presentation Slides

... The CPU will do the following things: • Read in a utility (AC) voltage signal • Read in a battery voltage signal • Control the switching of the power source switch • Control the switching of the charging switch • Output a battery life signal to the display ...
Ω MAX4741/MAX4742/MAX4743 0.8 , Low-Voltage, Single-Supply Dual SPST
Ω MAX4741/MAX4742/MAX4743 0.8 , Low-Voltage, Single-Supply Dual SPST

... switches that operate from a single +1.6V to +3.6V supply. These devices have fast switching speeds (tON = 24ns, tOFF = 16ns max), handle rail-to-rail analog signals, and consume less than 1µW of quiescent power. The MAX4743 has break-before-make switching. When powered from a +3V supply, the MAX474 ...
EMI / EMC
EMI / EMC

Addressable Photoelectric Smoke Detector
Addressable Photoelectric Smoke Detector

... and vandal-resistant locking—and it adds up to a flexible solution for all your fire protection needs. ...
VOLTAGE SENSITIVE RELAY
VOLTAGE SENSITIVE RELAY

... into the side walls of the VSR case, as shown by dashed lines (approximate positions). Stop cutting at the point where the plastic steps up to a thicker wall. Take care not to damage the circuit board with the blade. ...
Question 3 – Transfer Functions
Question 3 – Transfer Functions

... is 6V and the DC offset is also 6V. They are the same, so we will use 6V as the input. The output amplitude and DC offset are both 4V. If the circuit with Rx and Ry is actually a functioning differential amplifier, then Rx and Ry can be found easily by looking at the circuit. Ry must match the other ...
DC Motor Drives2
DC Motor Drives2

... • Supply is DC (maybe from rectified-filtered AC, or some other DC sources). • DC-DC converters (choppers) are used. ...
Power System Series Resonance Studies by Modified Admittance
Power System Series Resonance Studies by Modified Admittance

... unit. For the purpose of illustration, consider a radial network in fig. 1 containing capacitor banks with a non-linear load connected to bus J through a transformer and a long cable. The network is partitioned along the point of common coupling between the consumer distribution network and public u ...
f. notes E283C8
f. notes E283C8

... Notice that the voltages on loops 1 and 3 have reversed between the 2 pictures (from ωt=0° to ωt=90°), but since their connections have also reversed, the total voltage is still being built up in the same direction as before. This is the heart of every commutation scheme. ...
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ADS2806 数据资料 dataSheet 下载

... The analog inputs of the ADS2806 are very high impedance and should be driven through an R-C network designed to pass the highest frequency of interest. This prevents highfrequency noise in the input from affecting SFDR and SNR. The ADS2806 can be used in a wide variety of applications and deciding ...
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TEMPUS ENERGY: VOLTAGE DIPS 1: Introduction When

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1N5817 - Vishay

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Slide 1

... A model of conduction called "hopping" is relevant for some materials. It is a form of ionic conductivity where ions (oxygen ions) "hop" between point defect sites in the crystal structure. The probability of point defects in the crystal lattice increases as temperature increases, hence the "hopping ...
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74ABT244 - Nexperia

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EET-ASIA/semicon temp

... rings. At these points, current crowding can result in an uneven current density that leads to a hotspot. This same effect can be observed in thin-film chip resistors that utilize a meander pattern to increase track length, except that in these resistors, hotspots due to current crowding can occur a ...
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Purpose - University of Utah

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Introduction, Theory, Background

Section 4. Inspection Of Circuit
Section 4. Inspection Of Circuit

... of sealing required (environmental or hermetic) is dependent upon the environment in which the switch is intended to be operated. 2. If particle contamination in any form is likely to reach the contacts, bifurcated contacts should be used. 3. Low-voltage high-current loads are difficult to predict a ...
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3.3-V Hex Inverter/Clock Driver (Rev. A)

DS10BR150 1.0 Gbps LVDS Buffer / Repeater
DS10BR150 1.0 Gbps LVDS Buffer / Repeater

... Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been de ...
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Fast Defect Inspection and Classification of Patterned

Macro-Tech - AE Techron
Macro-Tech - AE Techron

... Load Impedance: Safe with all types of loads. Rated for 2 to 16 ohms in Stereo, 4 to 16 ohms in Bridge-Mono and 1 to 4 ohms in Parallel-Mono mode. Voltage Gain to 1-kHz, 8-ohm rated output; ...
High-Efficiency Backup Power Supply
High-Efficiency Backup Power Supply

... backup capacitor, two items have to be fulfilled. First, the converter must be in forced PWM mode. The converter is able to operate in the reverse direction (only in this mode). To enable the forced PWM mode, the PS/SYNC pin must be programmed to a logic high level. The TPS63060 data sheet shows a d ...
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1.5 Series-Parallel Network, Source Transformation

MAX8523 High-Speed, Dual-Phase Gate Driver for Multiphase, Step-Down Converters General Description
MAX8523 High-Speed, Dual-Phase Gate Driver for Multiphase, Step-Down Converters General Description

... resistance and 0.65Ω sinking resistance, resulting in 6A peak sourcing current and 7A peak sinking current with 5V supply voltage. The low-side drivers (DL_) have typical 0.95Ω sourcing resistance and 0.5Ω sinking resistance, yielding 5A peak sourcing current and 10A peak sinking current. This reduc ...
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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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