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Voltage Output DACs
Voltage Output DACs

what you should know about scr power controllers - McGoff
what you should know about scr power controllers - McGoff

GL SERIES - RS Components International
GL SERIES - RS Components International

SynQor 3-Phase PFC Terminal Commands Command Formats
SynQor 3-Phase PFC Terminal Commands Command Formats

... Some data are writeable; written values are, however, volatile and will revert to default upon power cycling. A pause of >5 seconds between any two comand characters will timeout/reset the command parser. No response is generated. This timeout value is user settable, see Hung Parser Timeout below. T ...
Design of a 8-bit CMOS Unit-Element Current-Steering Digital
Design of a 8-bit CMOS Unit-Element Current-Steering Digital

... Fig.3. 2 Simulation Result of Input and output b15 in one period ..........................................12 Fig.3. 3 Simulation Result of output b14-b10 in one period ...................................................12 Fig.3. 4 Simulation Result of output b9-b5 in one period..................... ...
MAX1619 Remote/Local Temperature Sensor with Dual- Alarm Outputs and SMBus Serial Interface
MAX1619 Remote/Local Temperature Sensor with Dual- Alarm Outputs and SMBus Serial Interface

... The ADC is an averaging type that integrates over a 60ms period (each channel, typical) with excellent noise rejection. The multiplexer automatically steers bias currents through the remote and local diodes, measures their forward voltages, and computes their temperatures. Both channels are automati ...
VT-DTMAA5-433
VT-DTMAA5-433

ISL8200MEVAL2PHZ User Guide
ISL8200MEVAL2PHZ User Guide

... Today’s FPGAs, DSPs and other processors require higher load currents than in the past. It is not uncommon to see load currents in the 10A-20A range or higher. Manufacturers of these devices specify tight regulation of the supply even during load transients. In order to verify the POL regulators mee ...
DLP3010 (Rev. B) - Texas Instruments
DLP3010 (Rev. B) - Texas Instruments

... The following power supplies are all required to operate the DMD: VSS, VDD, VDDI, VOFFSET, VBIAS, and VRESET. Recommended Operating Conditions are applicable after the DMD is installed in the final product. The functional performance of the device specified in this data sheet is achieved when operat ...
SN74LVCZ32244A 32-BIT BUFFER/DRIVER WITH 3-STATE OUTPUTS FEATURES
SN74LVCZ32244A 32-BIT BUFFER/DRIVER WITH 3-STATE OUTPUTS FEATURES

... DESCRIPTION/ORDERING INFORMATION (CONTINUED) Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as translators in a mixed 3.3-V/5-V system environment. During power up or power down, when VCC is between 0 and 1.5 V, the device is in the high-impedance ...
first published: ieee - iasted international conference on power
first published: ieee - iasted international conference on power

... system benefit from such a reduction in harmonic current and voltage levels, real life performance varies continuously as a function of several typically dynamic variables, especially in industrial systems, and as a result the phase multiplication approach may fall short of what is ultimately requir ...
Lock-In Specification - Crucial Power Products
Lock-In Specification - Crucial Power Products

ON Thyristor Application Note
ON Thyristor Application Note

LTC5549 - Linear Technology
LTC5549 - Linear Technology

PowerPoint ® Presentation Chapter 7 PLC and System Interfacing
PowerPoint ® Presentation Chapter 7 PLC and System Interfacing

... fluid power, and mechanical quantities and conditions to indicate the status of a circuit, process, or application. ...
BDTIC
BDTIC

... waveform is postulated providing a similar energy as the real transients hiding the device (e.g. USB VBUS line). For the so called “short circuit 8µs/20µs” reference surge pulse, we are facing an entire pulse duration of less than 100µs. Other norm surge pulses show a “5µs/360µs” and a “10µs/700µs” ...
Application of MATLAB/SIMULINK in Solar PV Systems
Application of MATLAB/SIMULINK in Solar PV Systems

... power quality and surge rating. Generally inverter is normally sized to support the load, power factor and surge. For the efficient operation of the inverter, it should have low self consumption to increase the battery life. A high self consumption inverter, continuously drains the battery which res ...
Power Supply Module 230 V MDP 102-1 1 Overview
Power Supply Module 230 V MDP 102-1 1 Overview

... conditions described in this documentation, especially the environmental conditions (temperature, protection class, humidity, mains input, EMC and the mounting position) It must be mounted in a closed switchgear cabinet with minimum ...
VANI INSTITUTE GATE/IES
VANI INSTITUTE GATE/IES

DaliPRO® Digital Dimming - Universal Lighting Technologies
DaliPRO® Digital Dimming - Universal Lighting Technologies

... Ballast control wiring consists of a two-wire, non-polarized circuit. Since programming assigns ballasts to specific groups, all ballasts can be connected to the same control wires and power circuit. DaliPro ballasts are listed for either Class 1 or Class 2 control circuit wiring, but the selected m ...
SPURIOUS FREE DYNAMIC RANGE
SPURIOUS FREE DYNAMIC RANGE

... wideband communications and software-defined radio. Unwanted spurious signals generated by the DAC can degrade the bit error rate of wideband communication systems and the effectiveness of wideband EW systems [1], [2]. Meeting the desired spurious performance of sampled signals close to the Nyquist ...
ENGG 3640: Microcomputer Interfacing
ENGG 3640: Microcomputer Interfacing

Lock-In Specification - Perfect Power Systems
Lock-In Specification - Perfect Power Systems

MAX1617A Remote/Local Temperature Sensor with SMBus Serial Interface ________________General Description
MAX1617A Remote/Local Temperature Sensor with SMBus Serial Interface ________________General Description

Low Level Measurements Handbook - 7th Edition
Low Level Measurements Handbook - 7th Edition

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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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