Electronic Instrumentation for a 3D EIT Application
... The thesis aims to present the electronic instrumentation required for an EIT application which aims to make an imaging reconstruction of living cells covered with blank hydrogel. Thus the accuracy of the impedance measurement along the frequency range will have a great importance. The experiments p ...
... The thesis aims to present the electronic instrumentation required for an EIT application which aims to make an imaging reconstruction of living cells covered with blank hydrogel. Thus the accuracy of the impedance measurement along the frequency range will have a great importance. The experiments p ...
Aalborg Universitet
... systems [1], [2]. The switching frequency of the semiconductor devices, used in medium/high power applications, is often limited [3]. Therefore, such systems may require large filter components to meet the stringent power quality requirements imposed by the utility [4]. The use of the large filter c ...
... systems [1], [2]. The switching frequency of the semiconductor devices, used in medium/high power applications, is often limited [3]. Therefore, such systems may require large filter components to meet the stringent power quality requirements imposed by the utility [4]. The use of the large filter c ...
Aalborg Universitet Yang, Yongheng; Ma, Ke; Wang, Huai; Blaabjerg, Frede
... Actually, the measurements also enable a possibility to develop an instantaneous (frequency-dependent) ESR model by using curve-fitting. For example, the ESR of the capacitors shown in Fig. 4 exhibits an exponential decaying trend. Thus, an exponential ESR model can possibly be obtained within a cer ...
... Actually, the measurements also enable a possibility to develop an instantaneous (frequency-dependent) ESR model by using curve-fitting. For example, the ESR of the capacitors shown in Fig. 4 exhibits an exponential decaying trend. Thus, an exponential ESR model can possibly be obtained within a cer ...
Instruction manual Emotron VSA
... any output phase is shorted to ground, the VSD may trip with OC.(over current trip) Operation with Residual Current Device (RCD): A filtered VSD with the trip limit of the RCD is 300 mA The neutral of the supply is grounded, as is the VSD. Only one VSD is supplied from each RCD. ...
... any output phase is shorted to ground, the VSD may trip with OC.(over current trip) Operation with Residual Current Device (RCD): A filtered VSD with the trip limit of the RCD is 300 mA The neutral of the supply is grounded, as is the VSD. Only one VSD is supplied from each RCD. ...
Vibration measurement
... consciously or unconsciously use it as a measure of how well things are running. For vibration to get start it takes some effort, either external or internal to get vibration going, some input of energy through an applied force. Once we have put energy into the system to make it vibrate, how do we c ...
... consciously or unconsciously use it as a measure of how well things are running. For vibration to get start it takes some effort, either external or internal to get vibration going, some input of energy through an applied force. Once we have put energy into the system to make it vibrate, how do we c ...
CI23521526
... This paper presents novel concept of a multiple converter. It works in three modes- AC-AC converter voltage regulator, AC-AC converter frequency changer and AC-DC converter. All three modes work simultaneously. AC-AC converter mode of operation alters low input frequency to high output frequency acr ...
... This paper presents novel concept of a multiple converter. It works in three modes- AC-AC converter voltage regulator, AC-AC converter frequency changer and AC-DC converter. All three modes work simultaneously. AC-AC converter mode of operation alters low input frequency to high output frequency acr ...
Long Distance Digital Connection
... • In the following sequence of graphs, a sine wave is sampled. • The frequency of the sine wave is doubled each time, while the sampling frequency is kept fixed. – Case E does not resemble a sine wave but alternates up and down with the correct frequency – i.e. the sampling has captured the most ess ...
... • In the following sequence of graphs, a sine wave is sampled. • The frequency of the sine wave is doubled each time, while the sampling frequency is kept fixed. – Case E does not resemble a sine wave but alternates up and down with the correct frequency – i.e. the sampling has captured the most ess ...
Chirp spectrum
The spectrum of a chirp pulse describes its characteristics in terms of its frequency components. This frequency-domain representation is an alternative to the more familiar time-domain waveform, and the two versions are mathematically related by the Fourier transform. The spectrum is of particular interest when pulses are subject to signal processing. For example, when a chirp pulse is compressed by its matched filter, the resulting waveform contains not only a main narrow pulse but, also, a variety of unwanted artifacts many of which are directly attributable to features in the chirp's spectral characteristics. The simplest way to derive the spectrum of a chirp, now computers are widely available, is to sample the time-domain waveform at a frequency well above the Nyquist limit and call up an FFT algorithm to obtain the desired result. As this approach was not an option for the early designers, they resorted to analytic analysis, where possible, or to graphical or approximation methods, otherwise. These early methods still remain helpful, however, as they give additional insight into the behavior and properties of chirps.