impedance造句

intrinsic impedance

impedance compensator

acoustic impedance density

Electrical impedance or admittance.

high impedance NMR spectrometer

Match impedance to long-cycle database administration.

The impedance matching design is briefly introduced.

Also, the relationship between the input impedance and load impedance of the waveguide is discussed.

It also puts forward the applicable range of measuring impedance and sub circuit impedance action features.

Thus it not only solved the problem of constant output current while load impedance is varied, but also solved the matching problem of output impedance and load impedance.

This creates an impedance mismatch that must be tested for.

Predicting aquifer porosity of coal mine by impedance inversion

Direct impedance measurements from 100 kHz to 500 MHz can be performed using the optional 41951a impedance test kit.

It also has a low impedance, which assures that the typical unbalanced output impedance is between 100 and 1000 ohms.

No matter what the output impedance of the amplifier is!

In consideration of the drawbacks in conventional acoustic impedance inversion method, the homotopy method with vast convergence was applied to the acoustic impedance inversion in seismic exploration.

This paper describes the design of a variable impedance output buffer, and its adaptive control circuit. It can automatically adjust the impedance of output buffer in real-time.

The output characteristic of non impedance matching balance traction transformer is deduced by employing the theory of multiwinding transformer and with considering the leakage impedance of windings.

The inductors and capacitors of LCCL filter are properly configured to achieve a reasonable virtual impedance controller for making the inverter equivalent output impedance capacitive.

This result is applicable to the impedance matching of other RF power.

With the base grounded, transistor Q4 is a very high impedance.

Based on bio-impedance to extract gastric motility information is an important project.

The antenna was optimized in order to wide bandwidth and impedance matching.

A method to reduce the static error and output impedance by biasing the TL431 is given.

This paper presents a novel concept for system integration at system level, which is to select output impedance of source converter and input impedance of load converter as objects of standardization.

In this paper, impedance matching between LPF and surveying instrument is discussed and the design method is presented.

Then the influences of the dimension parameters on the impedance property and radiation property are studied, and the relationship between the feed height and the impedance property is presented.

Acoustic impedance changes and hearing threshold shifts after exposure to impulse noise or air-blasts were studied in guinea pigs.

Instrumental amplifiers with high input impedance, high CMRR and low drift are widely used in the small signal amplifying field.

I have studied the impedance-matching of RF transmission line between the antenna and the GPS module.

The MOSFET input diode is controlled by an electric field in the gate region, thus the input impedance is always extremely high because there is no forward biased diode to lower the input impedance.

The dispersion characteristic, the synchronous voltage and the interaction impedance of this S-band CCTWT are measured.

By testing and handling the current across the exciting coil and the trans-active power, the trans-impedance real part can be obtained.

The guard can be used to isolate the high impedance input lead of the ammeter from leakage current due to voltage sources.

For the arc resistance is nonlinear and high, the conventional feeder protections, such as impedance protection and current protection, maybe fail to trip off.

The impedance matching circuit includes a first pull-down resistance unit, a first pull-up resistance unit, and a code generation unit.

In this paper, we proposed a theoretical method and results for calculating special contact resistance and contact impedance of base contact of a PNP type HBT.

A logic family that may be in one of three states rather than the usual two-high,low,or high impedance the high impedance state,output voltage is unaltered. Logic in a high impedance state may be easily and permanently connected to a bus.

Switching boost converter's load effect has great effect on input phase, stability of small signal, ratio of input and output impedance, and the ratio of Boost converter's output efficiency.

If critical high impedance nodes are surrounded by a ring of conductor which is at (or very close to) the potential of the node itself then the leakage current at the node will be minimized.

The best way of minimizing ground impedance in a multicard system is to use another PCB as a backplane and have a ground plane( or even two- one analog, one digital) on that mother card.

The ratio of effectual emitter area to base area of a FFJ is 2-3 times greater than a usual transistor and the output power-impedance product is 5-10 times greater.

In this paper, room sound field theory as the basis of measurement based on reverberation chamber and waveguide theory as the basis of measurement based on impedance tube are introduced.