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EEC 115 Electrical Engg Science 1 theory - Unesco
EEC 115 Electrical Engg Science 1 theory - Unesco

UNIT-IV Digital Voltmeters - University of Utah School of Computing
UNIT-IV Digital Voltmeters - University of Utah School of Computing

Buck converter
Buck converter

... Capacitors tend to keep the voltage constant (voltage “inertia”). An ideal capacitor with infinite capacitance acts as a constant voltage source. Thus, a capacitor cannot be connected in parallel with a voltage source or a switch (otherwise KVL would be violated, i.e. there will be a ...
Q - Uplift Education
Q - Uplift Education

... Devices for which current through them is directly proportional to the potential difference across device are said to be ‘ohmic devices’ or ‘ohmic conductors’ or simply resistors. In other words the resistance stays constant as the voltage changes. There are very few devices that are trully ohmic. H ...
ACDSee HP Version print job
ACDSee HP Version print job

... Due to the fact that the electrical utilities produce, in general, the electrical power as sinusoidal and positive sequence phase voltages, this has been established as reference condition in the supply. A resistive load, balanced and linear is considered as the ideal reference load. A reference vol ...
An Intelligent Technique for Generating Equivalent TT Circuits Using
An Intelligent Technique for Generating Equivalent TT Circuits Using

... fittest". GA has the capability to generate new design solutions from a population of existing solutions, and discarding the solutions which have an inferior performance or fitness [11]. TheGA starts from high-level descriptions to automatically synthesize analog circuits. However, automatic synthes ...
MPC564xA Power and Reset
MPC564xA Power and Reset

Chapter 2 text - Digilent Learn site
Chapter 2 text - Digilent Learn site

... Real Analog – Circuits 1 Chapter 2.2: Parallel Circuit Elements and Current Division ...
CD74HC4538-Q1 数据资料 dataSheet 下载
CD74HC4538-Q1 数据资料 dataSheet 下载

... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant ...
MX7534/MX7535 Microprocessor-Compatible, 14-Bit DACs _______________General Description
MX7534/MX7535 Microprocessor-Compatible, 14-Bit DACs _______________General Description

... are sensitive to offset voltages, connect nodes that must be grounded directly to a single-point ground through a separate, very-low-resistance path. Note that the output currents at IOUT and AGNDF vary with input code and create code-dependent error if these terminals are connected to ground (or a ...
CA201003EN/ Old 201-50
CA201003EN/ Old 201-50

... Eaton’s Cooper Power™ series single-phase PEAK™ transformers are available as conventional (5-167 kVA), completely self-protected (CSP) (5-75 kVA), or MagneX® interrupter protected (5-167 kVA) in a variety of ratings to meet or exceed the requirements of applicable ANSI® and NEMA® standards. Units d ...
United States Court of Appeals for the Federal Circuit
United States Court of Appeals for the Federal Circuit

R - Piazza
R - Piazza

... If we pass a resistor against the direction of our arbitrarily chosen current, we say there is a rise in potential across the resistor, + IR. If we pass a resistor in the direction of our arbitrarily chosen current, we say there is a drop in potential across the resistor, - IR. ...
Document
Document

IGC18T120T8Q High Speed IGBT in Trench and Fieldstop Technology
IGC18T120T8Q High Speed IGBT in Trench and Fieldstop Technology

... property rights of any third party. Information For further information on technology, delivery terms and conditions and prices, please contact the nearest Infineon Technologies Office (www.infineon.com). Warnings Due to technical requirements, components may contain dangerous substances. For inform ...
MAX3170 +3.3V, Multiprotocol, 3 Tx/3 Rx, Software- Selectable Clock/Data Transceiver General Description
MAX3170 +3.3V, Multiprotocol, 3 Tx/3 Rx, Software- Selectable Clock/Data Transceiver General Description

... The state of the mode select pins M0, M1, and M2 determines which serial interface protocol is selected (Table 1). The state of the DCE/DTE input determines whether the transceiver will be configured as a DTE or a DCE serial port. When the DCE/DTE input is logic HIGH, driver T3 is activated and rece ...
MK484 receiver
MK484 receiver

... In our project, and to avoid the risk of over-voltages, we have used a separate battery to feed the chip. It is a cell of 1.5 volts with its corresponding switch. The audio amplifier has another independent battery of 4.5 volts that sources enough power to drive an 8 ohms 0.2 W loudspeaker. We have ...
PDF: 1.47MB
PDF: 1.47MB

29371 Demonstrate knowledge of automotive electrical
29371 Demonstrate knowledge of automotive electrical

... conventional current flow, electron current flow, conductors, insulators, semi-conductors, attraction and repulsion of charges, potential, potential difference (p.d.), electromotive force (e.m.f.), counter e.m.f. ...
Bio-impedance Detection Using AD5933 Impedance Converter
Bio-impedance Detection Using AD5933 Impedance Converter

... low cost bio-impedance analyzer. The main aim of this paper is to detect the human Bio impedance using AD5933 Impedance Converter Analyzer that can be used to diagnose various diseases like skin cancer, viral fevers and so on . This paper is based on the prototype of bio-impedance measurement system ...
May07 – 17 SCUBA Oxygen Analyzer
May07 – 17 SCUBA Oxygen Analyzer

... The parts required are affordable and are commercially available. The team has access to a SCUBA tank for testing. All of the components operate at or above their specifications. The components needed to make the device are capable of being powered by a battery. The user will follow the device’s ins ...
Performance Enhancement of TFRC in Wireless Networks
Performance Enhancement of TFRC in Wireless Networks

... The Physical Layer is concerned with physical considerations and limitations. ...
Safety Board Hardware Description Document (HDD)
Safety Board Hardware Description Document (HDD)

A Power-Efficient Neural Tissue Stimulator With Energy Recovery , Member, IEEE
A Power-Efficient Neural Tissue Stimulator With Energy Recovery , Member, IEEE

... 136 A used before from 2.5-V supplies or more, as is often done [5], results in 339 W or more of the total power consumption per current-source/electrode pair during stimulation. Since our design incorporates the power converter circuitry, we assume that a 0.25-V Schottky diode is used to generate t ...
Slides - EECG Toronto - University of Toronto
Slides - EECG Toronto - University of Toronto

< 1 ... 971 972 973 974 975 976 977 978 979 ... 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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