High Frequency Amplifier Evaluation Board
... to the end of the input lines — not at the connector. While stripline techniques aren’t absolutely necessary for the demo board, they are important on larger layouts where line lengths are longer. The short lines on the demo board can be terminated in 50Ω, 75Ω, or 93Ω without adversely affecting per ...
... to the end of the input lines — not at the connector. While stripline techniques aren’t absolutely necessary for the demo board, they are important on larger layouts where line lengths are longer. The short lines on the demo board can be terminated in 50Ω, 75Ω, or 93Ω without adversely affecting per ...
Lecture 7 Overview
... 1) Determine the DC operating conditions (in particular, the collector current, IC) 2) Calculate small signal model parameters: gm, rπ, re 3) Eliminate DC sources: replace voltage sources with shorts and current sources with open circuits 4) Replace BJT with equivalent small-signal model. ...
... 1) Determine the DC operating conditions (in particular, the collector current, IC) 2) Calculate small signal model parameters: gm, rπ, re 3) Eliminate DC sources: replace voltage sources with shorts and current sources with open circuits 4) Replace BJT with equivalent small-signal model. ...
TWOPORT
... measure Zi or Zo since we are dealing with ac systems whose impedance may be sensitive to the applied frequency. Ohmmeters can be used to measure resistance in a dc or ac network, but recall that ohmmeters are employed only on a de-energised network, and their internal source is a dc battery. The ou ...
... measure Zi or Zo since we are dealing with ac systems whose impedance may be sensitive to the applied frequency. Ohmmeters can be used to measure resistance in a dc or ac network, but recall that ohmmeters are employed only on a de-energised network, and their internal source is a dc battery. The ou ...
S2014, BME 101L: Applied Circuits Lab 5a Characterizing
... At that resonant frequency, even small currents produce large motions of the voice coil, in turn producing large voltages—that is, the impedance at that frequency is large. We will model that resonance as well. (Note: loudspeakers are usually used only at frequencies above their mechanical resonant ...
... At that resonant frequency, even small currents produce large motions of the voice coil, in turn producing large voltages—that is, the impedance at that frequency is large. We will model that resonance as well. (Note: loudspeakers are usually used only at frequencies above their mechanical resonant ...
Word - IPFW.edu
... current, impedance, frequency and waveform measurements. Frequency and transient response. Elements of circuit modeling and design. ...
... current, impedance, frequency and waveform measurements. Frequency and transient response. Elements of circuit modeling and design. ...
How capacitors affect harmonics, and what is resonance?
... In the case of parallel resonance or even close to resonance condition, the path, which includes distributing transformer and PF capacitors have a very high impedance at the harmonic current frequency. At parallel resonance condition the harmonic current is forced to go to the load. Since the path i ...
... In the case of parallel resonance or even close to resonance condition, the path, which includes distributing transformer and PF capacitors have a very high impedance at the harmonic current frequency. At parallel resonance condition the harmonic current is forced to go to the load. Since the path i ...
WEEK TWO LISBURN 2391
... We have begun by looking at the methods of protection against electric shock. These were identified in the Week One workbook. It is, however, important to ensure that these other aspects of protection are fully appraised in our inspection. We continue now to look at one very important method of prot ...
... We have begun by looking at the methods of protection against electric shock. These were identified in the Week One workbook. It is, however, important to ensure that these other aspects of protection are fully appraised in our inspection. We continue now to look at one very important method of prot ...
Smart EMI monitoring of thin composite structures
... the advantage of using piezoelectric sensors for damage detection resides in their highfrequency capability, which exceeds by orders of magnitudes the frequency capability of conventional modal analysis sensors. Thus, they are able to detect changes in the highfrequency structural dynamics at local ...
... the advantage of using piezoelectric sensors for damage detection resides in their highfrequency capability, which exceeds by orders of magnitudes the frequency capability of conventional modal analysis sensors. Thus, they are able to detect changes in the highfrequency structural dynamics at local ...
MAGNASTART Slipring Motor Starters TM P O W E R
... It may be possible to parallel models for greater capacity in particular circumstances. Please consult Iris Power with specific details. 2. This is based on the maximum motor size starting against 1.5 x full load torque for 15 secs, mounted in a typical unventilated metallic enclosure. For heavier d ...
... It may be possible to parallel models for greater capacity in particular circumstances. Please consult Iris Power with specific details. 2. This is based on the maximum motor size starting against 1.5 x full load torque for 15 secs, mounted in a typical unventilated metallic enclosure. For heavier d ...
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.