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

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

operational amplifier's equivalent circuit has a finite input impedance, a non-zero output impedance, and a finite gain. A real op-amp has a number of non-ideal...

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...

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

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

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

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

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...

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...

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

The antenna is resonant at this length, so its input impedance is purely resistive. The input impedance has capacitive reactance below 1/ 4  λ and inductive...

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

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...

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...

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...

{(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...

feedback to its input side is described as 'unilateral'. The input impedance of a unilateral amplifier is independent of load, and output impedance is independent...

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...

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 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×)...

designed for a particular load impedance, ZLoad, and a particular source impedance, Zs. The impedance seen looking into the input port will be ZS if the output...

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...

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

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...

output impedance that is higher by the factor β 2 {\displaystyle \scriptstyle {\frac {\beta }{2}}} , on the order of 50 times. The input impedance of a...

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

it is usually employed for amplifiers that require an unusually low input impedance, for example to act as a preamplifier for moving-coil microphones....

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...