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ILB-CP LED Emergency Driver Product Guide
ILB-CP LED Emergency Driver Product Guide

exp_01_IOBoard
exp_01_IOBoard

Lecture_8
Lecture_8

... decreases as temperature decreases. Some materials, however, have resistivity that falls abruptly to zero at a very low temperature, called the critical temperature, TC. ...
2.2.3 Astable Circuits Word Document
2.2.3 Astable Circuits Word Document

... gate operating on a 5V supply that the switching point is at the midpoint of the supply voltage for an increasing or decreasing input voltage. Comparing this to the Schmitt characteristic reveals a different situation altogether. As VIN increases the voltage has to increase above 3V before the outpu ...
Design and Analysis of Dynamic Current Mode Full Adder with
Design and Analysis of Dynamic Current Mode Full Adder with

... In comparison with CMOS circuits, current mode logic (CML) circuits dissipate constant static power. Also, current mode logic (CML) circuits operate at lower dynamic power to reduce the output swings, which achieves faster switching performance.Therefore,current mode logic (CML) technology offers ex ...
Product Data Sheet08/22/2013
Product Data Sheet08/22/2013

... Operation of this device beyond any one of these limits may cause permanent damage. For reliable continuous operation, the device voltage and current must not exceed the maximum operating values specified in the table below. Bias Conditions should also satisfy the following expression: PDISS < (TJ – ...
DS1249Y/AB 2048k Nonvolatile SRAM FEATURES PIN ASSIGNMENT
DS1249Y/AB 2048k Nonvolatile SRAM FEATURES PIN ASSIGNMENT

... 6. If the CE low transition occurs simultaneously with or latter than the WE low transition in Write Cycle 1, the output buffers remain in a high-impedance state during this period. 7. If the CE high transition occurs prior to or simultaneously with the WE high transition, the output buffers remain ...
IV. Measuring Return Ratio at the Terminals of a Dependent Source
IV. Measuring Return Ratio at the Terminals of a Dependent Source

... fixed value to the dependent source, and calculating the signal that returns to its controlling terminals. This procedure is not suitable, though, for simulating electronic circuits, where there is no access to circuit's dependent sources, or for testing real electronic circuits. An alternative appr ...
Fuzzy Logic Controller Based Perturb and Observe Maximum Power
Fuzzy Logic Controller Based Perturb and Observe Maximum Power

ENGR 210 Lab 6
ENGR 210 Lab 6

... electronics. It is essential that you know how to use both instruments well. The Signal Generator The signal generator is a voltage source which can produce various time dependent signals waveforms from 0.0001 Hz to about 13 MHz. We have not used the terminology peak-to-peak in class but it means th ...
User Manual Rev. 01a
User Manual Rev. 01a

Voltage Fluctuations in the Electric Supply System
Voltage Fluctuations in the Electric Supply System

... reactive power Q, connected to a power system with an impedance of resistance R, and reactance X, as illustrated in Figure 3. The voltage VR seen by the customer can usually be regulated by operating the system voltage VS at a slightly higher value to ensure VR remains at the required value, e.g. 23 ...
Measure Temperature using a RTD, myDAQ, and
Measure Temperature using a RTD, myDAQ, and

... from the myDAQ DMM terminals each time it executes. Once a value is read it is passed into the formula node. The resistance is then further converted into a temperature in Kelvin using the supplied polynomial equation and constants from the sensor specifications sheet. Finally, the temperature is di ...
h 数据资料 dataSheet 下载
h 数据资料 dataSheet 下载

... Driver output voltage range, VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –15 V to 15 V Receiver low-level output current, IOL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
MAX2240 2.5GHz, +20dBm Power Amplifier IC in UCSP Package General Description
MAX2240 2.5GHz, +20dBm Power Amplifier IC in UCSP Package General Description

... Note 1: Limits are 100% production tested at TA = +25°C. Limits over the entire operating temperature range are guaranteed by design and characterization but are not production tested. Note 2: Supply current is measured with RF power applied to the input. Note 3: Measured with an output-matching net ...
COMPOUND CIRCUITS
COMPOUND CIRCUITS

High Speed MOSFET Circuits Using Advanced Lithography
High Speed MOSFET Circuits Using Advanced Lithography

... field may be possible. The penalty for this increased resolution is a more complicated step-and-repeat mechanism with a reduced throughput rate and possible alignment errors. Magnification and depth of focus are critical factors in both systems. A severe problem results from the use of monochromatic ...
Causes for Amplitude Compression
Causes for Amplitude Compression

Series 94 Peaktronics Positioner
Series 94 Peaktronics Positioner

... The DHC positioner is a high performance, high resolution digital positioner. A simple threebutton control is used to configure ALL parameters that the unit needs for a variety of applications, and eliminates the need for special meters and/or tools for calibration. As long as there is supply power, ...
MAX9622 Evaluation Kit Evaluates: General Description Features
MAX9622 Evaluation Kit Evaluates: General Description Features

... resistors used greatly impacts the CMRR characteristics of the board. Use 0.1% resistors for enhanced commonmode rejection. To interface to a fully differential input signal with a common mode other than the EV kit ground, cut the trace connection between the power ground and the circuit ground. ...
W-band push–push monolithic frequency doubler in 1
W-band push–push monolithic frequency doubler in 1

... Imax is the maximum current, t0 is the length of the pulse, and T is the period corresponding to the fundamental frequency. To maximize the amplitude of the second harmonic, the conduction duty cycle for each transistor should be chosen such as t0 /T D 32%Œ9 . However, this would sacrifice the valu ...
Rules and regs for RGS - Grand Bahama Power Company
Rules and regs for RGS - Grand Bahama Power Company

Experiment 2 - Rensselaer Polytechnic Institute
Experiment 2 - Rensselaer Polytechnic Institute

... The two basic types of filters we will consider in this part are low pass filters (LPF) and high pass filters (HPF). An idealized representation of these two types of filters is shown in figure B-2. Low pass filters filter out high frequencies while allowing low frequencies to pass through unchanged ...
Managing Subthreshold Leakage in Charge
Managing Subthreshold Leakage in Charge

STI55NF03L
STI55NF03L

... μF ...
< 1 ... 889 890 891 892 893 894 895 896 897 ... 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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