As we learned in Section 1.2, measurement instruments basically measure the real and imaginary parts of impedance and calculate from them a variety of impedance parameters such as R, X, G, B, C, and L. You can choose from series and parallel measurement circuit modes to obtain the measured ...
impedance in parallel with the circuit. This loading effect can cause measurement errors in high-impedance circuits. In most cases, the error is negligible (0.1% or less) if the circuit impedance is10 k? (10,000 ?) or less.For better accuracy when measuring the dc offset of an ac voltag...
The longitudinal and the Hall impedances have been measured as a function of the frequency in a two-dimensional electron gas at low temperatures. The frequency dependence of the longitudinal impedance can be explained in terms of an equivalent parallel LCR circuit. An effective inductance term ...
Parallel-plate capacitor. When a constant (DC) voltage is applied across this device, no current flows but the two conducting plates become charged. On the other hand, if the voltage changes, current flows through the device (Figure 3.12). Sign in to download full-size image Figure 3.12. ...
In parallel spin alignment, Pauli’s exclusion principle requires them to be spatially apart while in antiparallel alignment electrons align closely and their wave functions overlap. The energy difference of these two electron spin alignments is defined as exchange or interaction energy and goes well ...
In the under-damped case this results in the solution: Where The Q of the parallel RLC circuit is defined as: Solving for R results in: Solving for α as a function of Q by substitution: And finally, we can show that the exponential decay is related to the circuit Q: ...
Reported In Hardware PXI-4072 PXIe-4082 Driver NI-DMM Issue DetailsI have a circuit that is comprised of inductive, capacitive, and resistive elements. Can I use the NI 4072 or the NI 4082 to perform an overall impedance measurement of this circuit?
The standard Bode plot for a parallel LC tank circuit is shown in figure 5, where the relative gain or CB-dBV – CA-dBV trace and relative Phase B-A trace are plotted on the log frequency axis. Figure 5, Bode Gain, Phase log Frequency Plot ...
Engineers use impedance measurements to characterize electronic circuits, components, and materials. In RF applications, engineers generally define impedance (Z), represented as a complex quantity in the vector plane, as the total opposition a device or circuit offers to the flow of an alternating cu...
Figure 3: Simplified series equivalent circuit diagram of an NFC antenna La is the inductance and Ra is the equivalent series resistance representing all ohmic losses of the antenna. Ca is the parallel equivalent capacitance of the antenna. The values La and Ra can be measured directly with a ...