electrical engineering, the input impedance of an electrical network is the measure of the opposition to current (impedance), both static (resistance)...

Equivalently, it can be defined as the input impedance of a transmission line when its length is infinite. Characteristic impedance is determined by the geometry...

{\displaystyle r={\frac {E-V_{L}}{I}}} . Electrical impedance Input impedance Nominal impedance Damping factor Voltage divider Early effect small-signal...

known impedance. It presents at its input the dual of the impedance with which it is terminated. The relationship between the characteristic impedance, Z0...

electrical engineering, impedance matching is the practice of designing or adjusting the input impedance or output impedance of an electrical device for...

feedback, an op amp circuit's characteristics (e.g. its gain, input and output impedance, bandwidth, and functionality) can be determined by external components...

systems, a high-impedance input may be required for use with devices such as crystal microphones or other devices with high internal impedance. In analog circuits...

filter uses a voltage amplifier with practically infinite input impedance and zero output impedance to implement a 2-pole low-pass, high-pass, bandpass, bandstop...

high input impedance was necessary. The VTVM had a fixed input impedance of typically 1 MΩ or more, usually through use of a cathode follower input circuit...

antenna the input impedance has different values, allowing the possibility of impedance matching the antenna to the feedline characteristic impedance without...

200,000 is obtained in early integrated circuit exemplars), and have input impedance large with respect to values present in the feedback network. With...

000 tubes or more), high gain, gain stability, high input impedance, medium/low output impedance, good clipper (with a not-too-long tail), non-inverting...

raises input impedance, and reduces distortion, it predates the invention of the negative feedback amplifier and does not reduce output impedance or increase...

systems to connect a high output impedance unbalanced output signal to a low-impedance, microphone level, balanced input, usually via an XLR connector and...

to capacitance, any impedance connected between the input and another node exhibiting gain can modify the amplifier input impedance via this effect. These...

the input impedance of a network with the addition of an element designated as "extra". In this case, Zd is the same as the impedance of the input test...

second circuit is influenced by output impedance of the first circuit (as it is larger than the input impedance of the second circuit). In the ideal voltage...

the above formula can be rearranged to express the input impedance in terms of the load impedance rather than the load voltage reflection coefficient:...

the characteristic impedance of a cable or other form of transmission line. The nominal value of the input, output or image impedance of a port of a network...

{(1-K)}{Z}}{V_{1}}={(1-K)}{I_{in0}}} and the input impedance of the circuit seen from the side of the input source accordingly increases/decreases Z i n...

use have lower input impedances, as low as 15 kΩ. Since it is possible to use high output impedance devices due to the high input impedance, other factors...

output impedance ZS in illustration) is connected to the input of another device (the load impedance ZL in the illustration), these two impedances form...

of the output of an amplifier stage is applied to the input, so as to alter the input impedance of the amplifier. When applied deliberately, the intention...

digital input signal and isolate it from any output load. For the typical case of using voltages as logic signals, a logic buffer's input impedance is high...

the impedance bridging principle, in which a low impedance output drives a high impedance input. A typical line out connection has an output impedance from...

Nominal impedance, approximate designed impedance Impedance matching, the adjustment of input impedance and output impedance Mechanical impedance, a measure...

So the input impedance to the circuit is z in = v i = − Z {\displaystyle z_{\text{in}}={\frac {v}{i}}=-Z} The circuit converts the impedance Z {\displaystyle...

discontinuity in the characteristic impedance of the line, or if the far end of the line is not terminated in its characteristic impedance. This can happen, for instance...

(Z{=}C_{\text{parasitic}})} . If the amplifier itself has infinite input impedance, the current from the input terminal through Z {\displaystyle Z} is: i Z = C parasitic...

The circuit topology affects input and output impedance. In general, the source impedance is matched to the input impedance because that will maximize the...