CEA-LETI. 17 rue des Martyrs, 38054 Grenoble Cedex 9. France
... ensure their ecological energetic autonomy, a promising alternative is to scavenge the ambient energy such as the mechanical one. Nowadays, few microgenerators operate at low frequency. They are often rigid structures that can perturb the application or the environment; none of them are perfectly fl ...
... ensure their ecological energetic autonomy, a promising alternative is to scavenge the ambient energy such as the mechanical one. Nowadays, few microgenerators operate at low frequency. They are often rigid structures that can perturb the application or the environment; none of them are perfectly fl ...
Super conducting Magnetic Energy Storage Unit for Power
... Abstract— Superconducting magnetic energy storage (SMES) technology has been progressed actively in recent years. SMES technology has the potential to bring real power storage characteristic to protect consumers from the grid voltage fluctuations. This paper analyses the operation principle of the S ...
... Abstract— Superconducting magnetic energy storage (SMES) technology has been progressed actively in recent years. SMES technology has the potential to bring real power storage characteristic to protect consumers from the grid voltage fluctuations. This paper analyses the operation principle of the S ...
A new 650V Super Junction Device with rugged body diode... and soft switching applications
... For reference Fig. 8 shows, the wave forms obtained by using the SPD07N60C3 device as transistors T2 and T3 and additionally the diodes D2, D3, D4 and D5. With this setup, we achieved an efficiency of 91,81%. By removing the diodes in series to the transistors, the additional voltage drop in forward ...
... For reference Fig. 8 shows, the wave forms obtained by using the SPD07N60C3 device as transistors T2 and T3 and additionally the diodes D2, D3, D4 and D5. With this setup, we achieved an efficiency of 91,81%. By removing the diodes in series to the transistors, the additional voltage drop in forward ...
Review of Basic Electrical and Magnetic Circuit Concepts
... of transformers, electrical motors and generators. The law states that: “The induced electromotive force (EMF) in any closed circuit is equal to the time rate of change of the magnetic flux through the circuit” Or alternatively, “the EMF generated is proportional to the rate of change of the magneti ...
... of transformers, electrical motors and generators. The law states that: “The induced electromotive force (EMF) in any closed circuit is equal to the time rate of change of the magnetic flux through the circuit” Or alternatively, “the EMF generated is proportional to the rate of change of the magneti ...
Power semiconductor devices The difference between ideal switch
... problems of using a SCR for controlling such circuits is that like a diode, the “SCR” is a unidirectional device, meaning that it passes current in one direction only, from Anode to Cathode. Circuits like shown below can be used to obtain full-wave power control in two-directions but this increases ...
... problems of using a SCR for controlling such circuits is that like a diode, the “SCR” is a unidirectional device, meaning that it passes current in one direction only, from Anode to Cathode. Circuits like shown below can be used to obtain full-wave power control in two-directions but this increases ...
Lecture 12
... • In order to power electronic devices, we need to smooth out the variations with time. • Another way to look at this is that we need to store energy temporarily while the input ...
... • In order to power electronic devices, we need to smooth out the variations with time. • Another way to look at this is that we need to store energy temporarily while the input ...
(BIL) ratings for medium-voltage controllers
... UL. While this is valid, the real reason that the values differ is that the two types of equipment are intended for different applications. To examine this, first consider the requirements for the medium-voltage controllers. The standard for controllers is UL 347, which is also an ANSI standard. For ...
... UL. While this is valid, the real reason that the values differ is that the two types of equipment are intended for different applications. To examine this, first consider the requirements for the medium-voltage controllers. The standard for controllers is UL 347, which is also an ANSI standard. For ...
IRIS POWER Volume 1, Issue 1 February 2006
... New Stator Winding Insulation Standards From IEC Continued... detects PD, for example above 40 MHz, then all the PD may not be detected in the winding, since PD can occur in all coils in an off-line test. (In contrast, in an on-line test, only the coils close to the stator terminals operate at high ...
... New Stator Winding Insulation Standards From IEC Continued... detects PD, for example above 40 MHz, then all the PD may not be detected in the winding, since PD can occur in all coils in an off-line test. (In contrast, in an on-line test, only the coils close to the stator terminals operate at high ...
Adobe Acrobat file ()
... where i is the instantaneous current the heating effect produced by an AC current with a maximum value of Imax is not the same as that of a DC current of the same value The maximum current occurs for a small amount of time ...
... where i is the instantaneous current the heating effect produced by an AC current with a maximum value of Imax is not the same as that of a DC current of the same value The maximum current occurs for a small amount of time ...
Residual voltage on load side of an open circuit breaker
... from the connected position to the test or disconnected position, as IEEE C37.20.2 recognizes this as the condition that fulfills the function of an isolator. The National Electric Code® (NEC)® ANSI/NFPA 70® also recognizes an open circuit breaker does not provide an isolating function. Specifically ...
... from the connected position to the test or disconnected position, as IEEE C37.20.2 recognizes this as the condition that fulfills the function of an isolator. The National Electric Code® (NEC)® ANSI/NFPA 70® also recognizes an open circuit breaker does not provide an isolating function. Specifically ...
LM150/250 LM350
... frequencies above 120Hz. If the bypass capacitor is used, it is sometimes necessary to include protection diodes to prevent the capacitor from discharging through internal low current paths and damaging the device. In general, the best type of capacitors to use are solid tantalum. Solid tantalum cap ...
... frequencies above 120Hz. If the bypass capacitor is used, it is sometimes necessary to include protection diodes to prevent the capacitor from discharging through internal low current paths and damaging the device. In general, the best type of capacitors to use are solid tantalum. Solid tantalum cap ...
Section 3 GDT Telecom Applications Protection Examples
... caused by lightning. Secondary Protection applications traditionally have used Silicon solutions but due to the increased bandwidth now required by telephone lines the GDT has the benefit of having significantly lower capacitance levels and are now competing with Silicon solutions due to their relat ...
... caused by lightning. Secondary Protection applications traditionally have used Silicon solutions but due to the increased bandwidth now required by telephone lines the GDT has the benefit of having significantly lower capacitance levels and are now competing with Silicon solutions due to their relat ...
Phy 103: Chapter 22
... Its inherent ability to conduct electricity, its resistivity (r) The surface area (A): the wider the area the more room for current to flow The length (L) of the object: the longer the object the more material the current must be pushed through ...
... Its inherent ability to conduct electricity, its resistivity (r) The surface area (A): the wider the area the more room for current to flow The length (L) of the object: the longer the object the more material the current must be pushed through ...
click - Uplift Education
... • Tesla who was hired by George Westinghouse believed that AC was superior • Tesla was right, but Edison never gave up! ...
... • Tesla who was hired by George Westinghouse believed that AC was superior • Tesla was right, but Edison never gave up! ...
HW7 Hints Prob. 1 (SS5.86). In this problem you must first decide (by
... used in IC analog circuit designs. It should be obvious how to calculate R such that Ie1 = 2 mA. Thus we can assume that Io = Ic is APPROXIMATELY the same as Ie1 = 2 mA, assuming that beta is suitably large. Assuming that this PNP transistor saturates when the C-B junction just comes on, say when Vc ...
... used in IC analog circuit designs. It should be obvious how to calculate R such that Ie1 = 2 mA. Thus we can assume that Io = Ic is APPROXIMATELY the same as Ie1 = 2 mA, assuming that beta is suitably large. Assuming that this PNP transistor saturates when the C-B junction just comes on, say when Vc ...
Low Power Design of Integrated Systems Assoc. Prof. Dimitrios
... • Power Dissipation - rate at which energy is taken from the source (Vdd ) and converted into heat ...
... • Power Dissipation - rate at which energy is taken from the source (Vdd ) and converted into heat ...
Solar Energy Technician (CCC - 0615050517)
... 02.09 Apply Ohm's law and Kirchoff's voltage and current laws to solve series, parallel, and series-parallel circuits. 02.10 Construct and verify operation of series, parallel, and series-parallel circuits. 02.11 Analyze and troubleshoot series, parallel, and series-parallel circuits. 02.12 Apply Oh ...
... 02.09 Apply Ohm's law and Kirchoff's voltage and current laws to solve series, parallel, and series-parallel circuits. 02.10 Construct and verify operation of series, parallel, and series-parallel circuits. 02.11 Analyze and troubleshoot series, parallel, and series-parallel circuits. 02.12 Apply Oh ...
Surge protector
A surge protector (or surge suppressor) is an appliance/device designed to protect electrical devices from voltage spikes. A surge protector attempts to limit the voltage supplied to an electric device by either blocking or by shorting to ground any unwanted voltages above a safe threshold. This article primarily discusses specifications and components relevant to the type of protector that diverts (shorts) a voltage spike to ground; however, there is some coverage of other methods.The terms surge protection device (SPD), or transient voltage surge suppressor (TVSS), are used to describe electrical devices typically installed in power distribution panels, process control systems, communications systems, and other heavy-duty industrial systems, for the purpose of protecting against electrical surges and spikes, including those caused by lightning. Scaled-down versions of these devices are sometimes installed in residential service entrance electrical panels, to protect equipment in a household from similar hazards.Many power strips have basic surge protection built in; these are typically clearly labeled as such. However, power strips that do not provide surge protection are sometimes erroneously referred to as ""surge protectors"".