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Lecture 1 Review • Basic Concepts
Lecture 1 Review • Basic Concepts

International Electrical Engineering Journal (IEEJ) Vol. 5 (2014) No.7, pp. 1484-1489
International Electrical Engineering Journal (IEEJ) Vol. 5 (2014) No.7, pp. 1484-1489

... Regulated Supply Sections: The +5V and +12V regulated supply has been achieved using IC 7805 and 7812 to provide supply to the PWM IC and VCO IC respectually. Opto-Darlington: Opto-isolators are used to electrically isolate the control circuit from the power circuit in order to protect the control c ...
Reliability Improving Approach with Opto
Reliability Improving Approach with Opto

Question Bank
Question Bank

Headline 8-bit MCUs in 28-pin packages with enhanced NXP 80C51-based
Headline 8-bit MCUs in 28-pin packages with enhanced NXP 80C51-based

... operate without external oscillator components. Users can adjust the IRC oscillator to other frequencies. When the clock doubler option is enabled, the output frequency is 14.746 MHz. The on-chip Watchdog timer has a separate on-chip oscillator (nominal 400 kHz), requires no external components, and ...
Presentation - CS Course Webpages
Presentation - CS Course Webpages

New design techniques for a complementary metal
New design techniques for a complementary metal

... input stage has low power dissipation and small chip area, it can be used in the hybrid FPA. Jn addition to high injection efficiency, good noise performance, small area size, and low power dissipation, good bias stability and threshold control are inherent in the SBDJ structure as well as in the BD ...
New Model Eleven Level Inverter Using SPWM Technique
New Model Eleven Level Inverter Using SPWM Technique

... Now days many industrial applications have begun to require high power. Some appliances in the industries however require medium or low power for their operation. Using a high power source for all industrial loads may prove beneficial to require high power, while it damage the other loads. The multi ...
DC Generator-Characteristics
DC Generator-Characteristics

... • Eg can be determined by subtracting the drop due to demagnetizing effect of armature reaction from no-load voltage E0. Therefore, internal characteristic curve lies below O.C.C. curve. • 3. External Characteristic (V/IL) • The external characteristic curve shows the relation between the terminal v ...
Ignition operation and diagnosis
Ignition operation and diagnosis

O A  RIGINAL
O A RIGINAL

... weaknesses and it is more significant during rain, storms and so forth. For example, on rainy days, the receiving satellite signal using the antenna is not so good due the influence of weather conditions. However, if the satellite system is replaced with the cable system, it is found that although i ...
Electricity PPt#2
Electricity PPt#2

HALO Catalog # Type
HALO Catalog # Type

... or metal shades. Clean simple lines blend with a variety of interior spaces and provide effective task or accent lighting. The shapes include soft cones, cylinders and tall cones of cased glass in white, amber or blue. Metal shades are available in two styles in aluminum haze or bronze finishes. The ...
CHEM 515 Spectroscopy
CHEM 515 Spectroscopy

Embedded 5 V-to-3.3 V Voltage Regulator For Supplying Digital Ic`s
Embedded 5 V-to-3.3 V Voltage Regulator For Supplying Digital Ic`s

Lab-05 Spectrum Analyzer Introduction
Lab-05 Spectrum Analyzer Introduction

Electricity
Electricity

LASER Q-SWITCHING
LASER Q-SWITCHING

... focused, the intensity of the focused beam represents sufficiently high electromagnetic field strengths to ionize the air and cause "breakdown"—just like a high dc voltage between a spark gap. Q-switched lasers can be classified for study according to two criteria: 1. Whether they have a continuous ...
Powering a Wireless Node with Sources Greater
Powering a Wireless Node with Sources Greater

Axopatch 200B Amplifier Brochure
Axopatch 200B Amplifier Brochure

Paper 1
Paper 1

... creation of the IEEE 802.3z Gigabit Ethernet standard. The Gigabit Ethernet standard is an evolution of the original Ethernet standard developed by the Xerox Corporation in the 1970s, with the two standards being identical from the data link layer on up [1]. The original Ethernet standard has a spee ...
Special Power Supply for operating rooms according to German
Special Power Supply for operating rooms according to German

Single Schottky Barrier Diode, 50 V, 1 A
Single Schottky Barrier Diode, 50 V, 1 A

... "standard application", intended for the use as general electronics equipment. The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportati ...
I/O PORTS
I/O PORTS

... Need to disable it to be able to use RB3,6,7 as I/O pins ...
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)

... latency in many circuits, the most common domain being bit-line reading in memories. With the advent of sub micrometer CMOS chips, interconnection is becoming a major source of on-chip delay, and fast sense amplifiers are also likely to be needed, e.g. as repeaters for high-speed signals which must ...
< 1 ... 1964 1965 1966 1967 1968 1969 1970 1971 1972 ... 2982 >

Opto-isolator



In electronics, an opto-isolator, also called an optocoupler, photocoupler, or optical isolator, is a component that transfers electrical signals between two isolated circuits by using light. Opto-isolators prevent high voltages from affecting the system receiving the signal. Commercially available opto-isolators withstand input-to-output voltages up to 10 kV and voltage transients with speeds up to 10 kV/μs.A common type of opto-isolator consists of an LED and a phototransistor in the same opaque package. Other types of source-sensor combinations include LED-photodiode, LED-LASCR, and lamp-photoresistor pairs. Usually opto-isolators transfer digital (on-off) signals, but some techniques allow them to be used with analog signals.
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