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Aalborg Universitet Abulanwar, El-Saye Mohamed; Chen, Zhe; Iov, Florin
Aalborg Universitet Abulanwar, El-Saye Mohamed; Chen, Zhe; Iov, Florin

High Power AC Drive and Motor Applications
High Power AC Drive and Motor Applications

... The first approach considered was to get the shaft spinning using the gas turbine engine prior to switching to the auxiliary motor. However, this did not allow for completely independent operation of the two systems. A variable speed drive (VSD) rather than a fixed speed drive approach was selected ...
Dual Negative Regulated Charge Pump
Dual Negative Regulated Charge Pump

... tied to the 3.3V supply voltage. Due to temperature variation, the 3.3V supply voltage will drift when the temperature varies from -40˚C to 85˚C. To mitigate the effect of supply voltage variation, the reference voltage (R1 and R2) and the feedback resistor network (R3 and R4) are tied to the same 3 ...
Stability-Improvement-Analysis-of-Wind-Farm-by-SVC-in
Stability-Improvement-Analysis-of-Wind-Farm-by-SVC-in

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Design of the HV box

AC / DC Power Supply Choices and Safety for
AC / DC Power Supply Choices and Safety for

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MPS A 0 5

BB ADS831 datasheet
BB ADS831 datasheet

... The circuit provided in Figure 3 shows typical connections for the analog input in case the selected amplifier operates on dual supplies. This might be necessary to take full advantage of very low distortion operational amplifiers, like the OPA642. The advantage is that the driving amplifier can be ...
Ultra-Low Noise Amplifier
Ultra-Low Noise Amplifier

... careful consideration of resistor values. The feedback and gain set resistors (Rf and Rg) and the non-inverting source impedance (Rsource) all contribute noise to the circuit and can easily dominate the overall noise if their values are too high. The datasheet is specified with an Rg of 25Ω, at whic ...
UX SERIES - Decentralized Parallel Modular UPS series
UX SERIES - Decentralized Parallel Modular UPS series

... Emergency Power Off device can be operated on site or remotely ...
MXa Owner`s Manual
MXa Owner`s Manual

... which the output relays will stay open to mute the speakers. After the turn-on muting interval, the “PROT” LEDs turn off, the green “PWR” LEDs light, and the output relays close to enable the speaker outputs. Even during the muting interval, the yellow “SIG” and red “CLIP” LEDs operate normally if t ...
Motionless Electromagnetic Generator (MEG)
Motionless Electromagnetic Generator (MEG)

... combination with a transformer having first and second windings about a core, with two paths for magnetic flux leading from each pole of the permanent magnet to either end of the core, so that, when an alternating current induces magnetic flux direction changes in the core, the magnetic flux from th ...
Aalborg Universitet
Aalborg Universitet

... realize the power and current sharing of each battery ESS. And in [7], a fuzzy control and adaptive droop method are deployed for power balancing the control of energy storage system. However, most previous control scheme is discussed based on BESS, moreover direct connection of battery pack may cau ...
10 2018 Picture This
10 2018 Picture This

LET16045C
LET16045C

... enhancement-mode lateral field-effect RF power transistor designed for broadband commercial and industrial applications at frequencies up to 1.6 GHz. The LET16045C is designed for high gain and broadband performance operating in common source mode at 28 V. It is ideal for ...
High Efficiency NPC Multilevel Converters using Super
High Efficiency NPC Multilevel Converters using Super

... counterparts and they exhibit technical challenges when driving their gates due to their lower trans-conductances and lower absolute maximum gate-source voltage limits. Instead of the VSC, SJ devices can be deployed in a current source converter (CSC) [4]. MOSFETs do not have to freewheel in a CSC a ...
Standards of Power Quality with reference to the Code of Practice for
Standards of Power Quality with reference to the Code of Practice for

... The magnitude of these ill effects is directly related to the degree of voltage unbalance. The adverse effects of unbalanced voltage on 3-phase induction motor operation come from the fact that the unbalanced voltage break down into the positive sequence component and the opposing negative sequence ...
COMPARISON OF LINEAR AND SWITCHING DRIVE AMPLIFIERS
COMPARISON OF LINEAR AND SWITCHING DRIVE AMPLIFIERS

... Figure 5 shows two different behaviors versus frequency. Amplifiers 1,2 and 3 exhibit linear dependence with frequency because the piezoelectric actuators are drawing more current at higher frequencies. Also note that Amplifier 2 draws much more power than Amplifier 1 because the output voltage of 1 ...
A Compact High Voltage Nanosecond Pulse Generator
A Compact High Voltage Nanosecond Pulse Generator

... other was a D flip flop. The retriggerable monostable multivibrator produces pulses depending upon the value of one external capacitor and resistor. Since the multivibrator is a dual IC, one can generate two pulses very easily. The pulses can be shifted apart from each other by increasing the extern ...
Advanced Paralleling of LTC Transformers by ∆VARTM Method
Advanced Paralleling of LTC Transformers by ∆VARTM Method

Voltage and Current Relay Monitoring Relay NMI 1001 Current
Voltage and Current Relay Monitoring Relay NMI 1001 Current

mic+600/DD/TC - Automation24
mic+600/DD/TC - Automation24

... embedded in its M30 housing design covers a measuring range from 30 mm to 8 m with its five detection ranges. Depending on the detection range, the internal resolution for distance measurement is 0.025 or 2.4 mm. All sensors are equipped with integrated temperature compensation. ...
Determination of Small-Signal Equivalent Circuit Elements and
Determination of Small-Signal Equivalent Circuit Elements and

... We combine measurements of test patterns and the device itself at different bias points for this task. The most serious problem arises from the distributed nature of the base electrode which results in the feedback capacitance Cfb. There are various approaches to deal with this capacitance. The valu ...
Laser Collimated Beam Sensor
Laser Collimated Beam Sensor

... Threshold level adjustment • The threshold level adjuster sets the threshold level of the comparative output. As the threshold adjuster is turned clockwise, the threshold level increases. 5V Threshold level ...
Analog IO VDD (2.5V)
Analog IO VDD (2.5V)

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Metadyne



A metadyne is a direct current electrical machine with two pairs of brushes. It can be used as an amplifier or rotary transformer. It is similar to a third brush dynamo but has additional regulator or ""variator"" windings. It is also similar to an amplidyne except that the latter has a compensating winding which fully counteracts the effect of the flux produced by the load current. The technical description is ""a cross-field direct current machine designed to utilize armature reaction"". A metadyne can convert a constant-voltage input into a constant-current, variable-voltage output.
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