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...

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

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

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

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...

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

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

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...

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...

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

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...

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

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

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...

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

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

floating impedance element, supplied by two voltage sources connected in series, may be split into two grounded elements with corresponding impedances. There...

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 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...

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...

connecting two electrical impedances in series, as shown in Figure 1. The input voltage is applied across the series impedances Z1 and Z2 and the output...

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...

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...

The probe connects to any input on the instrument and typically has a resistor of ten times the oscilloscope's input impedance. This results in a 0.1 (‑10×)...

provide the same impedance at their terminals. The transformation ratio is the ratio of the input and output impedances of the impedance matching network...

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...

Symmetrical networks A network is symmetrical if its input impedance is equal to its output impedance. Most often, but not necessarily, symmetrical networks...