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Three-Phase Transformer Banks - Lab-Volt
Three-Phase Transformer Banks - Lab-Volt

Molded Case Circuit Breaker.indd
Molded Case Circuit Breaker.indd

M4315-PRO Instructions
M4315-PRO Instructions

... M4315-PRO is designed to eliminate these transients by providing a “start-up” delay for the High-Current outlets and a “shut-down” delay for the Switched Outlet Banks. This minimizes inrush current issues by allowing the components plugged into the Switched Outlet Banks to power-up and stabilize bef ...
MAX16072/MAX16073/MAX16074
MAX16072/MAX16073/MAX16074

... For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com. Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. ...
Development of a ring laser gyro
Development of a ring laser gyro

Chapter 7: Electricity TRUE/FALSE 1. An atom with fewer electrons
Chapter 7: Electricity TRUE/FALSE 1. An atom with fewer electrons

... PTS: 1 6. An atom with fewer electrons than protons is a __________. ANS: positive ion PTS: 1 7. The type of current supplied by a battery is __________. ANS: DC current PTS: 1 8. In the U.S., AC line voltage oscillates at a frequency of __________. ANS: 60 Hz PTS: 1 9. An object that has zero resis ...
Q2686 Wireless CPU
Q2686 Wireless CPU

files - ORCA - Cardiff University
files - ORCA - Cardiff University

technical catalogue
technical catalogue

Nonideality Consideration for High- Precision Amplifiers
Nonideality Consideration for High- Precision Amplifiers

UNIT PULSE GENERATOR
UNIT PULSE GENERATOR

... The Type I2I7-C will produce externally triggered pulses' at frequencies from de to 2.4 Me. The driving signal should be applied to the EXT DRIVE terminals, and should be at least 0.5 volt rms up to 500 kc and at least I volt rms from 500 kc to 2.4 Me. Excessive driving voltages atfrequencies above ...
ENGINEERING CIRCUIT ANALYSIS
ENGINEERING CIRCUIT ANALYSIS

... power, you decide to incorporate a fast-blowing fuse into the design. Knowing that the circuit component is connected to 12 V, its minimum power consumption is 12 W, and the maximum power it can safely dissipate is 100 W, which of the three available fuse ratings should you select: 1 A, 4 A, or 10 A ...
MAX9384 ECL/PECL Dual Differential 2:1 Multiplexer General Description Features
MAX9384 ECL/PECL Dual Differential 2:1 Multiplexer General Description Features

... a single-ended signal when the unused complementary input is connected to the on-chip supply output VBB as a reference voltage. All the differential inputs have bias and clamp circuits that force the outputs to a low default when the inputs are left open or at VEE. The single-ended mux select inputs ...
$doc.title

... or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended perio ...
Manual: Rosemount 1152 Alphaline® Nuclear Pressure Transmitter
Manual: Rosemount 1152 Alphaline® Nuclear Pressure Transmitter

Advanced Sequence Elements for Line Current Differential
Advanced Sequence Elements for Line Current Differential

Machines and Stepping Motors
Machines and Stepping Motors

Whats a Servo
Whats a Servo

... run at a slower speed. This is called proportional control. How do you communicate the angle at which the servo should turn? The control wire is used to communicate the angle. The angle is determined by the duration of a pulse that is applied to the control wire. This is called Pulse Coded Modulatio ...
Terrasat IBUC2 Operations manual
Terrasat IBUC2 Operations manual

Low Voltage Surge Protection Products
Low Voltage Surge Protection Products

... If selecting a hard-wired filter, the DSFI is suitable for currents from 5 to 32A (for currents < 25A, the CSFI filter also provides installation compatibility with modular switchboards). For plug-in filters, the PSFI provides high levels of protection with good filtering. Note: cable systems are el ...
The Lineman`s and Cableman`s Field Manual
The Lineman`s and Cableman`s Field Manual

... functions contained in the work will meet your requirements or that its operation will be uninterrupted or error free. Neither McGraw-Hill nor its licensors shall be liable to you or anyone else for any inaccuracy, error or omission, regardless of cause, in the work or for any damages resulting ther ...
Capacitance
Capacitance

... Refer to Figure 2. When the switch is closed, electrons on the upper plate A are attracted to the positive pole of the battery. This leaves a shortage of electrons on plate A, which, is therefore positively charged. At the same time, electrons gather on the lower plate, B, causing it to become negat ...
AC Voltage Out of Range
AC Voltage Out of Range

EIAJ ED-4701/300
EIAJ ED-4701/300

... Condition A should be selected from Table 2 when SMD is stored in room in Japan (Mean temperature and humidity are below 30°C, 70%RH). Condition B should be selected from Table 2 when SMD is stored in atmosphere of higher humidity (Mean temperature and humidity are below 30°C, 85%RH). When condition ...
Powder Material for Inductor Cores
Powder Material for Inductor Cores

... that the voltages in the circuit is lowered and therefore a higher current is needed to keep the same power level. These two considerations puts higher requirements on the inductor and it is therefore interesting to investigate alternative core materials. Traditionally ferrites with air gap have bee ...
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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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