Zero Sequence Current Compensation for Distance
... adopted a variety of coping strategies in order to compensate for these effects in cases where the adjacent current is not available. However, recent experience has shown that there is another problem that must be considered when distance relays are applied to series compensated parallel lines. When ...
... adopted a variety of coping strategies in order to compensate for these effects in cases where the adjacent current is not available. However, recent experience has shown that there is another problem that must be considered when distance relays are applied to series compensated parallel lines. When ...
Power Handling Capacity of the 100 Series Probes
... apply when it is used as a receiver as well, i.e. when the probe is connected to a spectrum analyzer. ...
... apply when it is used as a receiver as well, i.e. when the probe is connected to a spectrum analyzer. ...
OP-AMP Filter Examples
... corner frequencies were chosen to be the audio band (20Hz – 20KHz). Notice the difference in the gain outside of the pass band. The gain of the inverting amplifier continues to drop as you get farther away from the pass band. The gain of the non-inverting amplifier only drops to 1 (0db). ...
... corner frequencies were chosen to be the audio band (20Hz – 20KHz). Notice the difference in the gain outside of the pass band. The gain of the inverting amplifier continues to drop as you get farther away from the pass band. The gain of the non-inverting amplifier only drops to 1 (0db). ...
How Stray Voltage Affects Multimeter Measurements - Techni-Tool
... environment, a high impedance digital multimeter or electrical tester is the appropriate tool. These test instruments have a relatively high input impedance (>1 megohm), which means that when connected, they don’t load the circuit under test. These test tools generally will not affect circuit operat ...
... environment, a high impedance digital multimeter or electrical tester is the appropriate tool. These test instruments have a relatively high input impedance (>1 megohm), which means that when connected, they don’t load the circuit under test. These test tools generally will not affect circuit operat ...
Our Friend the Direct Box
... often as high as 10MegOhms, and can drive into as low as 4Ω. Yes, you can actually drive a speaker directly with an opamp, assuming you take some cooling precautions. All this and she cooks too! Well, not quite. For one thing, opamps are no where near as forgiving as transformers. A power surge, ove ...
... often as high as 10MegOhms, and can drive into as low as 4Ω. Yes, you can actually drive a speaker directly with an opamp, assuming you take some cooling precautions. All this and she cooks too! Well, not quite. For one thing, opamps are no where near as forgiving as transformers. A power surge, ove ...
EECS 420 – Electromagnetics II Lab
... 1. Objectives: At the completion of the lab, you should have each done the following: a. Examine the reflections from discontinuities on transmission lines through the use of the Agilent E5071C Network Analyzer. b. Determine the type and values of unknown passive loads by measuring the reflection co ...
... 1. Objectives: At the completion of the lab, you should have each done the following: a. Examine the reflections from discontinuities on transmission lines through the use of the Agilent E5071C Network Analyzer. b. Determine the type and values of unknown passive loads by measuring the reflection co ...
Technical Article
... which varies with each inhalation and exhalation. The impedance increases as the patient inhales and decreases as he exhales. A circuit designed to detect this impedance variation—based on impedance pneumography—delivers a high frequency differential current driven onto the patient through a pair of ...
... which varies with each inhalation and exhalation. The impedance increases as the patient inhales and decreases as he exhales. A circuit designed to detect this impedance variation—based on impedance pneumography—delivers a high frequency differential current driven onto the patient through a pair of ...
– NV Series – – Microphone Preamplifier – – DI –
... In general, the best mics to try changing the impedance selection effect on are dynamics and ribbons. Condenser microphones have built in amplifiers, and the usual effect of running them into a lower impedance than they like to see is just a large increase in distortion and lower headroom, with mini ...
... In general, the best mics to try changing the impedance selection effect on are dynamics and ribbons. Condenser microphones have built in amplifiers, and the usual effect of running them into a lower impedance than they like to see is just a large increase in distortion and lower headroom, with mini ...
Instrucciones para Autores - Centro Nacional de Metrología
... ground node of the bridge by means of Vw and Tw and measuring cero current in the reference node of TI by the null detector. The main balance is measured by the detection transformer T4 and the ...
... ground node of the bridge by means of Vw and Tw and measuring cero current in the reference node of TI by the null detector. The main balance is measured by the detection transformer T4 and the ...
Nominal impedance
Nominal impedance in electrical engineering and audio engineering refers to the approximate designed impedance of an electrical circuit or device. The term is applied in a number of different fields, most often being encountered in respect of:The nominal value of 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, especially a network intended for use with a transmission line, such as filters, equalisers and amplifiers.The nominal value of the input impedance of a radio frequency antennaThe actual impedance may vary quite considerably from the nominal figure with changes in frequency. In the case of cables and other transmission lines, there is also variation along the length of the cable, if it is not properly terminated. It is usual practice to speak of nominal impedance as if it were a constant resistance, that is, it is invariant with frequency and has a zero reactive component, despite this often being far from the case. Depending on the field of application, nominal impedance is implicitly referring to a specific point on the frequency response of the circuit under consideration. This may be at low-frequency, mid-band or some other point and specific applications are discussed in the sections below.In most applications, there are a number of values of nominal impedance that are recognised as being standard. The nominal impedance of a component or circuit is often assigned one of these standard values, regardless of whether the measured impedance exactly corresponds to it. The item is assigned the nearest standard value.