Electric currents
... by some object or substance. • Resistors are used to control the flow of electricity in a circuit. • Every conductor has some resistance depending on the material. • resistance simulation • Resistance is measured in Ohms ( ) • 1 = 1V/1A • The bands on the resistor show how much resistance the res ...
... by some object or substance. • Resistors are used to control the flow of electricity in a circuit. • Every conductor has some resistance depending on the material. • resistance simulation • Resistance is measured in Ohms ( ) • 1 = 1V/1A • The bands on the resistor show how much resistance the res ...
INTERMEDIATE/SECONDARY ARTICLE: Measuring Electricity
... see it. We are familiar with terms such as watt, volt, and amp, but most of us do not have a clear understanding of these terms. We buy a 60-watt lightbulb, a tool that requires 120 volts, or a vacuum cleaner that uses 8.8 amps, and don’t really think about what those measurements mean. We are confi ...
... see it. We are familiar with terms such as watt, volt, and amp, but most of us do not have a clear understanding of these terms. We buy a 60-watt lightbulb, a tool that requires 120 volts, or a vacuum cleaner that uses 8.8 amps, and don’t really think about what those measurements mean. We are confi ...
Comparative Study of Power Factor Correction Converters Senior Member, IEEE
... bus voltage has to be raised even higher to shape the input current waveform. Several schemes have been reported to overcome the high battery voltage issue. One approach is to add one more phase leg to the dc bus, which forms a bi-directional chopper circuit for connecting a low voltage battery to ...
... bus voltage has to be raised even higher to shape the input current waveform. Several schemes have been reported to overcome the high battery voltage issue. One approach is to add one more phase leg to the dc bus, which forms a bi-directional chopper circuit for connecting a low voltage battery to ...
Capacitors: Review
... voltage • Example: place an inductor across the 110 V (rms) 60 Hz power line – The phase of the voltage is arbitrary, so let V = V0 V(t) = Re(Ve jwt) V(t) = Re(Vcoswt + j Vsinwt) = V0coswt – For an inductor, ZC = j wL – So the (complex) current is given by: I = V / Z = V0 / j wL = –V0 j / wL – T ...
... voltage • Example: place an inductor across the 110 V (rms) 60 Hz power line – The phase of the voltage is arbitrary, so let V = V0 V(t) = Re(Ve jwt) V(t) = Re(Vcoswt + j Vsinwt) = V0coswt – For an inductor, ZC = j wL – So the (complex) current is given by: I = V / Z = V0 / j wL = –V0 j / wL – T ...
+ - A +
... Next we can short-circuit the load. The current ISC = VB/Ri – can be measured. The Ri can be found as VOC/ISC = Ri We can get the same results by zeroing the source. ...
... Next we can short-circuit the load. The current ISC = VB/Ri – can be measured. The Ri can be found as VOC/ISC = Ri We can get the same results by zeroing the source. ...
LED Current Regulators - Integrated Silicon Solution
... automotive and industrial lighting applications. Each application requires specific attention to the LED’s luminous intensity and chromaticity output, LED current requirements and thermal management. ISSI’s family of CCR devices have been shown to have several distinct advantages for controlling LED ...
... automotive and industrial lighting applications. Each application requires specific attention to the LED’s luminous intensity and chromaticity output, LED current requirements and thermal management. ISSI’s family of CCR devices have been shown to have several distinct advantages for controlling LED ...
6501 is a multi-channel DC voltage current source/monitor
... Each SMU has eight measurement functions: VSIM, ISVM, VSVM, ISIM VM (voltmeter), IM (ammeter), VSRM (voltage source resistance measurement) and ISRM (current source resistance measurement) and other effective functions for characteristic evaluation of electronic components such as pulse measurement, ...
... Each SMU has eight measurement functions: VSIM, ISVM, VSVM, ISIM VM (voltmeter), IM (ammeter), VSRM (voltage source resistance measurement) and ISRM (current source resistance measurement) and other effective functions for characteristic evaluation of electronic components such as pulse measurement, ...
ht tp: //qpa BASIC ELECTRICAL ENGINEERING
... Why is a 3-phase induction motor self-starting ? b) A 4-pole, 3-phase, 275 kW, 440 V, 50 Hz induction motor is running with a slip of 4%. Find (i) synchronous speed (ii) rotor speed (iii) frequency of rotor induced ...
... Why is a 3-phase induction motor self-starting ? b) A 4-pole, 3-phase, 275 kW, 440 V, 50 Hz induction motor is running with a slip of 4%. Find (i) synchronous speed (ii) rotor speed (iii) frequency of rotor induced ...
Chapter 18 – DC Circuits
... ‘electromotive force’. It is not really a force -rather it is a potential difference which can drive a current through a circuit. The most common sources would be a battery or a ‘power supply’. A power supply is an instrument which converts the ac (alternating current or alternating voltage) from th ...
... ‘electromotive force’. It is not really a force -rather it is a potential difference which can drive a current through a circuit. The most common sources would be a battery or a ‘power supply’. A power supply is an instrument which converts the ac (alternating current or alternating voltage) from th ...
Dynamic Performance of the Interline Unified Power Flow Controller
... power demand of the series converter at the common DC link terminal from the AC power system. It can also generate or absorb reactive power at its AC terminal, which is independent of the active power transfer to (or from) the DC terminal [5-6]. The series converter is used to generate a voltage at ...
... power demand of the series converter at the common DC link terminal from the AC power system. It can also generate or absorb reactive power at its AC terminal, which is independent of the active power transfer to (or from) the DC terminal [5-6]. The series converter is used to generate a voltage at ...
HIGH VOLTAGE ISOLATED DRIVER MODULE 2017FEBRUARY
... applications such as inverters, drives & automation, UPS, renewable energy, transportation and medical. Its parallel capability allows easy high power system design. It supports switching up to 250 kHz, short-circuit protection, advanced active clamping and supply-voltage monitoring. Built using the ...
... applications such as inverters, drives & automation, UPS, renewable energy, transportation and medical. Its parallel capability allows easy high power system design. It supports switching up to 250 kHz, short-circuit protection, advanced active clamping and supply-voltage monitoring. Built using the ...
- International Burch University
... The aim of this paper is to point out the advantages of the use of the time-frequency analysis in the digital processing of the waveforms recorded in the high voltage impulse tests. Impulse voltage tests are essential to inspect and test insulation integrity of high voltage apparatus. The measured w ...
... The aim of this paper is to point out the advantages of the use of the time-frequency analysis in the digital processing of the waveforms recorded in the high voltage impulse tests. Impulse voltage tests are essential to inspect and test insulation integrity of high voltage apparatus. The measured w ...
Document
... AUIR2085S Self-oscillating Halfbridge Driver The AUIR2085S is a rugged, general purpose high speed selfoscillating half bridge driver which was specifically designed, tested and qualified for use in harsh environments such as automotive under-the-hood applications. Proprietary HVIC technology enable ...
... AUIR2085S Self-oscillating Halfbridge Driver The AUIR2085S is a rugged, general purpose high speed selfoscillating half bridge driver which was specifically designed, tested and qualified for use in harsh environments such as automotive under-the-hood applications. Proprietary HVIC technology enable ...
Electric Current
... When the ends of an electric conductor are at different potentials, charge flows from one end to another - just like heat due to temperature difference - just like water flows downhill (difference in gravitational potential energy) ...
... When the ends of an electric conductor are at different potentials, charge flows from one end to another - just like heat due to temperature difference - just like water flows downhill (difference in gravitational potential energy) ...
Power electronics
Power electronics is the application of solid-state electronics to the control and conversion of electric power. It also refers to a subject of research in electronic and electrical engineering which deals with the design, control, computation and integration of nonlinear, time-varying energy-processing electronic systems with fast dynamics.The first high power electronic devices were mercury-arc valves. In modern systems the conversion is performed with semiconductor switching devices such as diodes, thyristors and transistors, pioneered by R. D. Middlebrook and others beginning in the 1950s. In contrast to electronic systems concerned with transmission and processing of signals and data, in power electronics substantial amounts of electrical energy are processed. An AC/DC converter (rectifier) is the most typical power electronics device found in many consumer electronic devices, e.g. television sets, personal computers, battery chargers, etc. The power range is typically from tens of watts to several hundred watts. In industry a common application is the variable speed drive (VSD) that is used to control an induction motor. The power range of VSDs start from a few hundred watts and end at tens of megawatts.The power conversion systems can be classified according to the type of the input and output power AC to DC (rectifier) DC to AC (inverter) DC to DC (DC-to-DC converter) AC to AC (AC-to-AC converter)