Equivalent circuit diagrams

Figure 1.15 Simple equivalent circuit diagram of a motor...

Figure 2.4(a) Equivalent circuit diagram of a single squirrel cage motor... 

Figure 12.4(b) Equivalent circuit diagram with an unbalanced supply voltage (at slip = 2 - S)... 

To illustrate the important features of a VT, let us analyse its equivalent circuit diagram. Refer to a simple diagram as in Figure 15.1 which is drawn along similar lines to those for a motor (Section I.IO, Figure I.I.5). For ease of analysis, the ratio of primary and secondary turns has been considered as l l. Then from the circuit diagram, the following can be derived ... 

Figure 15.1 Equivalent circuit diagram for a voltage transformer...

R Damping resistor to prevent ferro-resonance effects Figure 15.7 Equivalent circuit diagram of a CVT... 

I2 - Secondary current referred to the primary side Figure 15.17 Equivalent circuit diagram of a current transformer... 

For ease of calculation, let us consider the impedance of the transformer as its leakage reactance, ignoring resistance and draw an equivalent circuit diagram as in Figures 24.25 (b) and (c) Assuming the length of the primary distribution line to be 15 km, the total line parameters will become... 

Fig. 23-4 Equivalent circuit diagram for a pipeline subjected to interference.

The equivalent circuit diagram in Fig. 23-4 shows a differential fundamental section and the closed-circuit impedance at the end of the close proximity region. 

It follows from the equivalent circuit diagram for a loop pipe/soil of the differential fundamental section ... 

Figure 20.2 A skin model showing possible diffusion pathways and its equivalent circuit diagram, (a) Permeation pathways in a two-dimensional skin model, (b) Resistances in a two-dimensional skin model.

A simple equivalent circuit diagram for a two-electrode contactless conductivity measurement is shown in Figure 7.8. The impedance is given by... 

Consideration of the equivalent circuit diagram of an electrochemical cell, such as that given in Figure 5.1, reveals the major limitation on the rate at which the potential of an electrode can be varied, namely, the time constant of the electrochemical cell, RuCd. When a potential sweep is applied across the cell, the nonfaradaic charging current that flows is described by [24]... 

It has been said that interfaces separate charges. Explain the charge separation and draw the equivalent circuit diagram of the following materials interfacing with an electrolyte containing only NaCl and water. 

Suggest an equivalent circuit diagram corresponding to this experiment and explain what causes the shift of the inflex point. 

The entire diagram illustrating the performance of the electrode processes, corresponding to the simple equivalent circuit diagram of a battery which is shown in Figure 8.18, is presented in Figure 8.23 [6],... 

If we permit charge penetration to the interface, the simplest equivalent circuit diagram is then a parallel circuit composed of R t and Cai in series with Rsuik. Its impedance is calculated as ... 

Fig. 6.8. Equivalent circuit diagram of the device [10]. Copyright 2003 IEEE...

The potential distribution given by Eq. (7) is reflected in the equivalent circuit diagram shown in Fig. 6. The resistances of the Helmholtz layer and... 

Fig. 6 Equivalent circuit diagram for an oxide film with ionic and electronic conductivity. Re = electronic resistance,...

Electrochemical Impedance Spectra EIS and Equivalent Circuit Diagram A... 

FF is defined as fraction of maximum theoretical power which is actually available under normal operating conditions at the maximum power point (MPP) (i.e. point on onrent-voltage curve, where the power is maximum, see Figure 5.6a). It is suggested that the FF depends on the V series resistance (R) and shunt resistance (R j ) (see equivalent circuit diagram in Figure 5.6b) as per the theoretical relations [34]... 

The classic models for bioimpedance and bioelectricity are mathematical equations and equivalent circuit diagrams with the same electrical behavior as the tissue to be modeled. Others include statistical models, which are used to determine the correspondence between bioelectrical measurements and physiological variables (e.g., tissue characterization). 

A mathematical equation is also a model, and a very ideal one. There is an important interaction between these two model forms the mathematical equation and the equivalent circuit diagram, with respect to the phenomena to be described. 

Fig. 3.12 Equivalent circuit diagrams for photoelectrochemical cells, (a) Extensive circuit that contains contributions from the semiconductor/back contact interface (Rcomact. Ccontact). the semiconductor bulk resistance (Rbuik). the space charge region (Rsc. Csc). surface states (Rss, Css), the Helmholtz layer (Rh. Ch), and the electrolyte resistance (Rsoi)- (h) Simplest circuit possible in which only the space charge capacitance and an overall series resistance is present, (c) Circuit that is often encountered in practice for photoelectrodes...

To derive Eq. 12.40 ideal coaxial lines have to be assumed which is not the case in practice. Therefore, calibration procedures have to be applied. First, the influence of the measuring cell has to be obtained and considered during the calculation of the sample impedance. Second, the direction-dependent resistance of the line has to be measured by a second calibration procedure because it cannot be obtained by an equivalent circuit diagram. 

Figure 11. Double-layer model for monomolecular oxide layer with chemisorbed oxygen ions, a, Potential distribution b, charge distribution c, equivalent circuit diagram with regard to adsorption equilibrium of oxygen ions. Symbols defined in text. ...

A. Rahmoun, H. Biechl, Parameters Identification of Equivalent Circuit Diagrams for Li-Ion Batteries, 11th International Symposium, pArNU 2012, Electrical Engineering, http //egdk.ttu.ee/ index.php id=119 (access date 19.12.2012). 

---