speed control of three phase induction motor with energy
... After the power flows through the rectifiers it is stored on a dc bus. The dc bus contains capacitors to accept power from the rectifier, store it, and later deliver that power through the inverter section. The dc bus may also contain inductors, dc links, chokes, or similar items that add indu ...
... After the power flows through the rectifiers it is stored on a dc bus. The dc bus contains capacitors to accept power from the rectifier, store it, and later deliver that power through the inverter section. The dc bus may also contain inductors, dc links, chokes, or similar items that add indu ...
Lecture 13
... – We only need to keep track of the amplitude and phase, when determining the response of a linear circuit to a sinusoidal source. ...
... – We only need to keep track of the amplitude and phase, when determining the response of a linear circuit to a sinusoidal source. ...
4. Fault Indicators Fault Indicators
... finding the difference in angle of positivesequence current phasors from fault and prefault data. • Voltage information (at the relay point) is required. ...
... finding the difference in angle of positivesequence current phasors from fault and prefault data. • Voltage information (at the relay point) is required. ...
Undergraduate Category: Engineering and Technology Degree Level: Bachelor of Science, Engineering
... Our device is capable of capturing the current signal (on the order of 10-7 A) from our collaborator’s salivary glucose biosensor. Evaluating the power spectral density of the signal revealed that nearly all of its energy is below 1 Hz. Our filter-amplifier circuitry, with its designed cutoff freque ...
... Our device is capable of capturing the current signal (on the order of 10-7 A) from our collaborator’s salivary glucose biosensor. Evaluating the power spectral density of the signal revealed that nearly all of its energy is below 1 Hz. Our filter-amplifier circuitry, with its designed cutoff freque ...
All-dielectric photonic-assisted radio front-end - jalali
... analyser. The detector had a responsivity of 0.8 A W21, which translates to 40 V W21 conversion gain on a load of 50 V. In our experiments, the optical power incident on the photodetector was 6 mW. The overall receiver had a bandwidth (23 dB) of 35 MHz, determined primarily by the RF resonance withi ...
... analyser. The detector had a responsivity of 0.8 A W21, which translates to 40 V W21 conversion gain on a load of 50 V. In our experiments, the optical power incident on the photodetector was 6 mW. The overall receiver had a bandwidth (23 dB) of 35 MHz, determined primarily by the RF resonance withi ...
MAX2754 1.2GHz VCO with Linear Modulation Input General Description
... The MAX2754 self-contained, linear modulation, voltage-controlled oscillator (VCO) is intended for use in the 2.4GHz to 2.5GHz ISM band, particularly for FSK modulation systems that utilize a direct frequency-modulation transmit architecture. This device features a linear modulation input in additio ...
... The MAX2754 self-contained, linear modulation, voltage-controlled oscillator (VCO) is intended for use in the 2.4GHz to 2.5GHz ISM band, particularly for FSK modulation systems that utilize a direct frequency-modulation transmit architecture. This device features a linear modulation input in additio ...
Pulse Oximetry - Cornell ECE
... Reduce power consumed by LED’s Drive with 100 Hz square wave with 3% duty cycle Heart beat signal will be AM modulated with 100 Hz drive signal Since drive frequency is much larger than heart beat frequency effect is minimal ...
... Reduce power consumed by LED’s Drive with 100 Hz square wave with 3% duty cycle Heart beat signal will be AM modulated with 100 Hz drive signal Since drive frequency is much larger than heart beat frequency effect is minimal ...
Design Considerations for Correlation Radiometers
... 9 in reference [9] show the effect particularly clearly. With quadrature switching, the only currents at the demodulation frequency (bottom trace in Fig. 2) come from small differences in the switch rise and fall times and, to a very small extent, waveform asymmetries from delays in the signal gener ...
... 9 in reference [9] show the effect particularly clearly. With quadrature switching, the only currents at the demodulation frequency (bottom trace in Fig. 2) come from small differences in the switch rise and fall times and, to a very small extent, waveform asymmetries from delays in the signal gener ...
Download T4500 Datasheet
... The T4500 Auto Synchronizer provides automatic synchronization of a generator to a busbar in a minimum of time, by controlling the speed via the electric servomotor on a conventional speed governor, or by controlling an electronic speed controller via an intermediate motorized potentiometer. A uniqu ...
... The T4500 Auto Synchronizer provides automatic synchronization of a generator to a busbar in a minimum of time, by controlling the speed via the electric servomotor on a conventional speed governor, or by controlling an electronic speed controller via an intermediate motorized potentiometer. A uniqu ...
Spur-Reduction Frequency Synthesizer Exploiting Randomly
... at a set frequency offset (w) given in dBc, as shown in Fig. 1. The periodic ripples on the control line of the VCO generate reference spurs at the frequency synthesizer output [5], [6] A spur ...
... at a set frequency offset (w) given in dBc, as shown in Fig. 1. The periodic ripples on the control line of the VCO generate reference spurs at the frequency synthesizer output [5], [6] A spur ...
Optical Comparator Array
... Pin (-) is held at 1.0 µW while Pin (+) is ramped from 0.5 µW to 1.5 µW and back to 0.5 µW. Pin (+) is modulated from 1.0 µW to 2.0 µW. Pin (-) is modulated from 1.0 µW to 2.0 µW with phase shifted 180° with respect to Pin (+). Use 100 kΩ trimpot to set the output signal to 50% duty cycle for maximu ...
... Pin (-) is held at 1.0 µW while Pin (+) is ramped from 0.5 µW to 1.5 µW and back to 0.5 µW. Pin (+) is modulated from 1.0 µW to 2.0 µW. Pin (-) is modulated from 1.0 µW to 2.0 µW with phase shifted 180° with respect to Pin (+). Use 100 kΩ trimpot to set the output signal to 50% duty cycle for maximu ...
E6-12 - Stanford University
... distortion (input and output waveforms). See Fig 5.39 in Meyer for an example. Explain the crossover distortion Explain why DC offset is not needed at the base. Change the function generator offset from zero to +1V. Show the output waveform and explain what’s going on. ...
... distortion (input and output waveforms). See Fig 5.39 in Meyer for an example. Explain the crossover distortion Explain why DC offset is not needed at the base. Change the function generator offset from zero to +1V. Show the output waveform and explain what’s going on. ...
Adjustable-Gain Difference Amplifier Circuit Measures Hundreds of
... A high common-mode difference amplifier, in a feedback loop with an inverting op amp, is a useful aid for performing high-voltage differential measurements up to 500 V. Two common solutions to monitor power-line voltages or other large signals—using low-voltage electronics—involve a highresistance v ...
... A high common-mode difference amplifier, in a feedback loop with an inverting op amp, is a useful aid for performing high-voltage differential measurements up to 500 V. Two common solutions to monitor power-line voltages or other large signals—using low-voltage electronics—involve a highresistance v ...
An ultrasonic aid for the blind Wirtz, John Carl. 1966
... The Human-Device Interface The replacement of the eye function per se is a major engineering feat that could not be accomplished without a complete knowledge of the ...
... The Human-Device Interface The replacement of the eye function per se is a major engineering feat that could not be accomplished without a complete knowledge of the ...
A 1-GHz BiCMOS RF Front-End IC
... In general, signals with lower frequency can penetrate walls better. But antenna size varies with RF wavelength, so low-frequency RF is not practical for handheld devices. In addition, frequencies of RF noises are ranging from 50-2400 MHz, so frequencies > 3000 MHz is better. ...
... In general, signals with lower frequency can penetrate walls better. But antenna size varies with RF wavelength, so low-frequency RF is not practical for handheld devices. In addition, frequencies of RF noises are ranging from 50-2400 MHz, so frequencies > 3000 MHz is better. ...
ECE490_07
... Analyze the advantages of delayed AGC and auxiliary AGC Explain the features and their operation that a high-quality receiver may include as compared to a basic receiver Analyze and explain the relationships among noise, receiver sensitivity, dynamic range, and the third-order intercept Troubleshoot ...
... Analyze the advantages of delayed AGC and auxiliary AGC Explain the features and their operation that a high-quality receiver may include as compared to a basic receiver Analyze and explain the relationships among noise, receiver sensitivity, dynamic range, and the third-order intercept Troubleshoot ...
Differntial Ring Voltage Controlled Oscillator -A
... modern communication systems, there is a calculated gap between the adjacent channels for the efficient use of frequency spectrum. Therefore, in order to avoid interference and noise problems, the characteristics of an oscillator are of much importance. Among the compilation of signals, oscillator m ...
... modern communication systems, there is a calculated gap between the adjacent channels for the efficient use of frequency spectrum. Therefore, in order to avoid interference and noise problems, the characteristics of an oscillator are of much importance. Among the compilation of signals, oscillator m ...
MECH 373 Instrumentation and Measurements Lecture 4
... • Measuring systems that use electrical signals to transmit information between components have substantial advantages over completely mechanical systems. ...
... • Measuring systems that use electrical signals to transmit information between components have substantial advantages over completely mechanical systems. ...
Heterodyne
Heterodyning is a radio signal processing technique invented in 1901 by Canadian inventor-engineer Reginald Fessenden, in which new frequencies are created by combining or mixing two frequencies. Heterodyning is used to shift one frequency range into another, new one, and is also involved in the processes of modulation and demodulation. The two frequencies are combined in a nonlinear signal-processing device such as a vacuum tube, transistor, or diode, usually called a mixer. In the most common application, two signals at frequencies f1 and f2 are mixed, creating two new signals, one at the sum f1 + f2 of the two frequencies, and the other at the difference f1 − f2. These new frequencies are called heterodynes. Typically only one of the new frequencies is desired, and the other signal is filtered out of the output of the mixer. Heterodynes are related to the phenomenon of ""beats"" in acoustics.A major application of the heterodyne process is in the superheterodyne radio receiver circuit, which is used in virtually all modern radio receivers.