Introduction to the quartz tuning fork
... Due to its high stability, precision, and low power consumption, the quartz crystal tuning fork has become a valuable basic component for frequency measurements. For instance, since the late 1960s, mechanical pendulum or springbased watches have largely been replaced by crystal watches, which are su ...
... Due to its high stability, precision, and low power consumption, the quartz crystal tuning fork has become a valuable basic component for frequency measurements. For instance, since the late 1960s, mechanical pendulum or springbased watches have largely been replaced by crystal watches, which are su ...
Aalborg Universitet
... of the wind turbine. The parallel connected VSCs can be operated with interleaved carriers to reduce the value of the filter components [12]–[18]. However, the carrier interleaving results in common-mode voltage difference across the parallel VSCs. If the conventional three limb three-phase differen ...
... of the wind turbine. The parallel connected VSCs can be operated with interleaved carriers to reduce the value of the filter components [12]–[18]. However, the carrier interleaving results in common-mode voltage difference across the parallel VSCs. If the conventional three limb three-phase differen ...
Ron Hammon - Mechanical Design Engineer Chronological Résumé,
... Teledyne Brown, AL support equipment used to stress test the prototype Space Shuttle External Tank 02/77-06/77 Contract (ET). Sole remaining contractor on-site for several weeks until completion of an task. Product - Automotive important Mechanical Drafter of distributor components, assemblies, cond ...
... Teledyne Brown, AL support equipment used to stress test the prototype Space Shuttle External Tank 02/77-06/77 Contract (ET). Sole remaining contractor on-site for several weeks until completion of an task. Product - Automotive important Mechanical Drafter of distributor components, assemblies, cond ...
Linear Transverters for 144 and 220 Mhz
... transverter interconnecting cables, interfering with signals being received from 220 MHz. Also, when more than one transverter with a 28-MHz IF is operated in the same room (at a multioperator VHF contest station, for example), it is not uncommon to hear signals from the other IF transceivers. Oscil ...
... transverter interconnecting cables, interfering with signals being received from 220 MHz. Also, when more than one transverter with a 28-MHz IF is operated in the same room (at a multioperator VHF contest station, for example), it is not uncommon to hear signals from the other IF transceivers. Oscil ...
Shunt power electronic buffer as active filter and energy flow controller
... The problem of system instability may occur if the source is not stiff. The Supply Source is modelled as a real one, with internal resistance R = 2 mΩ and inductance 100 μH. However, the considered active filter acts properly even if the resistance and inductance are modelled as several times greate ...
... The problem of system instability may occur if the source is not stiff. The Supply Source is modelled as a real one, with internal resistance R = 2 mΩ and inductance 100 μH. However, the considered active filter acts properly even if the resistance and inductance are modelled as several times greate ...
ADS1208 数据资料 dataSheet 下载
... This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete devi ...
... This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete devi ...
Experiment 2 - Rensselaer Polytechnic Institute
... usually need to define the required accuracy to make a statement like this. For example, we can say that a frequency is low as long as the approximate relationship we found between the input and output voltages is within 5% of the full expression. Most of the parts we use in circuits are no more acc ...
... usually need to define the required accuracy to make a statement like this. For example, we can say that a frequency is low as long as the approximate relationship we found between the input and output voltages is within 5% of the full expression. Most of the parts we use in circuits are no more acc ...
SKADS-LOGO
... applications. Compared to the conventional inductive-degenerated low noise amplifiers, the dual-loop feedback amplifier offers well-defined input impedance and signal transfer function and potentially good noise performance simultaneously. The dual-loop power-to-power configuration is mostly used fo ...
... applications. Compared to the conventional inductive-degenerated low noise amplifiers, the dual-loop feedback amplifier offers well-defined input impedance and signal transfer function and potentially good noise performance simultaneously. The dual-loop power-to-power configuration is mostly used fo ...
Film Capacitors – Power Factor Correction
... again. This prevents an electric impulse discharge in the application, influences the capacitor’s service life and protects against electric shock. The capacitor must be discharged to 75 V or less within 3 minutes. There must be not any switch, fuse or any other disconnecting device in the circuit b ...
... again. This prevents an electric impulse discharge in the application, influences the capacitor’s service life and protects against electric shock. The capacitor must be discharged to 75 V or less within 3 minutes. There must be not any switch, fuse or any other disconnecting device in the circuit b ...
Electrical System Elements
... • At high frequencies, all real devices (R, C, L) exhibit complex behavior involving some combination of all three pure elements. • Thus, real inductors deviate from the pure/ideal model at both low and high frequencies, whereas R and C deviate mainly at high frequencies. • One can expect real indu ...
... • At high frequencies, all real devices (R, C, L) exhibit complex behavior involving some combination of all three pure elements. • Thus, real inductors deviate from the pure/ideal model at both low and high frequencies, whereas R and C deviate mainly at high frequencies. • One can expect real indu ...
analysis of the parallel resonance circuit with supercapacitor
... may but does not have to occur. This issue becomes more complicated in systems containing supercapacitors [1 - 3] and fractional – order elements Lβ, Cα [4]. Analysis of properties of a series resonance RLCα circuit with supercapacitor was carried out in [5 - 6]. The article is a continuation of ear ...
... may but does not have to occur. This issue becomes more complicated in systems containing supercapacitors [1 - 3] and fractional – order elements Lβ, Cα [4]. Analysis of properties of a series resonance RLCα circuit with supercapacitor was carried out in [5 - 6]. The article is a continuation of ear ...
electrical safety and arc flash procedure
... 5. Test each phase conductor or circuit part with an adequately rated voltage detector to verify that the equipment is de-energized. Test each phase conductor or circuit part both phase-to-phase and phase-to-ground. Check the voltage detector before and after each test to be sure it is working; and ...
... 5. Test each phase conductor or circuit part with an adequately rated voltage detector to verify that the equipment is de-energized. Test each phase conductor or circuit part both phase-to-phase and phase-to-ground. Check the voltage detector before and after each test to be sure it is working; and ...
Cutler-Hammer - Performance Power Solutions
... Requires fully rated circuits and over sized neutrals to the loads Does not reduce system harmonics Additional cost and typically more expensive than “system” solutions ...
... Requires fully rated circuits and over sized neutrals to the loads Does not reduce system harmonics Additional cost and typically more expensive than “system” solutions ...
CHAPTER 6: LAYOUT AND FABRICATION
... When the LNA circuit design was done the input DC blocking capacitor was kept off-chip to avoid affecting the input matching network where the bond pad capacitance was absorbed into C1. An on-chip DC blocking capacitor would need to be inserted in between this pad capacitance and the rest of the IMN ...
... When the LNA circuit design was done the input DC blocking capacitor was kept off-chip to avoid affecting the input matching network where the bond pad capacitance was absorbed into C1. An on-chip DC blocking capacitor would need to be inserted in between this pad capacitance and the rest of the IMN ...
Film capacitors - Power Factor Correction
... (1) Power the capacitor up and down. (2) After ≤ 90 seconds the voltage between the terminals must decline to less than 75 V. Check the temperature of capacitors directly after operation for a longer period, but make sure that the capacitors have been switched off. In case of excessive temperature ...
... (1) Power the capacitor up and down. (2) After ≤ 90 seconds the voltage between the terminals must decline to less than 75 V. Check the temperature of capacitors directly after operation for a longer period, but make sure that the capacitors have been switched off. In case of excessive temperature ...
Silicon resonant accelerometer with electronic
... wh3 /12 is the moment of inertia. In Eq. (1) the beam is assumed narrow enough that any lateral stress is negligible, therefore the Young’s modulus E is considered instead of the effective Young’s modulus E/(1 − ν2 ), where ν is the Poisson’s ratio [32]. The coefficients αn and γ n depend on mode nu ...
... wh3 /12 is the moment of inertia. In Eq. (1) the beam is assumed narrow enough that any lateral stress is negligible, therefore the Young’s modulus E is considered instead of the effective Young’s modulus E/(1 − ν2 ), where ν is the Poisson’s ratio [32]. The coefficients αn and γ n depend on mode nu ...
3-Channel SDTV Video Amplifier with 5th-Order Filters and 5.2
... This rationale is also used for the chroma (C') term. Chroma is derived from the nonlinear R'G'B' terms and therefore it is also nonlinear. True chominance (C) is derived from linear RGB, and thus the difference between chroma (C') and chrominance (C) exists. The color difference signals (P'B/ P'R/U ...
... This rationale is also used for the chroma (C') term. Chroma is derived from the nonlinear R'G'B' terms and therefore it is also nonlinear. True chominance (C) is derived from linear RGB, and thus the difference between chroma (C') and chrominance (C) exists. The color difference signals (P'B/ P'R/U ...
a AN-574 APPLICATION NOTE
... The shunt size (500 µΩ) is selected to maximize the use of the dynamic range on Channel V1A (current Channel A). However, there are some important considerations when selecting a shunt for an energy metering application. First, minimize the power dissipation in the shunt. The maximum rated current f ...
... The shunt size (500 µΩ) is selected to maximize the use of the dynamic range on Channel V1A (current Channel A). However, there are some important considerations when selecting a shunt for an energy metering application. First, minimize the power dissipation in the shunt. The maximum rated current f ...
NHMFL Interphase Transformer _2_
... restricted but will be required to fit into the existing cabinets in the space presently occupied by the interphase/filter reactors. In each power supply, the 12-pulse interphase transformer must be mounted on top of the filter inductor. The 6–pulse interphase transformers are labeled IPT in Fig. 1 ...
... restricted but will be required to fit into the existing cabinets in the space presently occupied by the interphase/filter reactors. In each power supply, the 12-pulse interphase transformer must be mounted on top of the filter inductor. The 6–pulse interphase transformers are labeled IPT in Fig. 1 ...
Aalborg Universitet in Industrial Power Systems
... was not considered. In addition, the hybrid active filter was proposed for the unified power quality conditioner to address PQ issues in the power distribution system [21]. Several case studies of the hybrid active filter considering optimal voltage or current distortion were conducted in [22]. In p ...
... was not considered. In addition, the hybrid active filter was proposed for the unified power quality conditioner to address PQ issues in the power distribution system [21]. Several case studies of the hybrid active filter considering optimal voltage or current distortion were conducted in [22]. In p ...
Greenwave Meter Instructions (11-13-15)
... (for example: 100v, 110v, 115v, 120v, 127v). Do NOT attempt to use the meter to measure EMI on circuits with voltage outside this range. Doing so will damage the meter and ...
... (for example: 100v, 110v, 115v, 120v, 127v). Do NOT attempt to use the meter to measure EMI on circuits with voltage outside this range. Doing so will damage the meter and ...
Mechanical filter
A mechanical filter is a signal processing filter usually used in place of an electronic filter at radio frequencies. Its purpose is the same as that of a normal electronic filter: to pass a range of signal frequencies, but to block others. The filter acts on mechanical vibrations which are the analogue of the electrical signal. At the input and output of the filter, transducers convert the electrical signal into, and then back from, these mechanical vibrations.The components of a mechanical filter are all directly analogous to the various elements found in electrical circuits. The mechanical elements obey mathematical functions which are identical to their corresponding electrical elements. This makes it possible to apply electrical network analysis and filter design methods to mechanical filters. Electrical theory has developed a large library of mathematical forms that produce useful filter frequency responses and the mechanical filter designer is able to make direct use of these. It is only necessary to set the mechanical components to appropriate values to produce a filter with an identical response to the electrical counterpart.Steel and nickel–iron alloys are common materials for mechanical filter components; nickel is sometimes used for the input and output couplings. Resonators in the filter made from these materials need to be machined to precisely adjust their resonance frequency before final assembly.While the meaning of mechanical filter in this article is one that is used in an electromechanical role, it is possible to use a mechanical design to filter mechanical vibrations or sound waves (which are also essentially mechanical) directly. For example, filtering of audio frequency response in the design of loudspeaker cabinets can be achieved with mechanical components. In the electrical application, in addition to mechanical components which correspond to their electrical counterparts, transducers are needed to convert between the mechanical and electrical domains. A representative selection of the wide variety of component forms and topologies for mechanical filters are presented in this article.The theory of mechanical filters was first applied to improving the mechanical parts of phonographs in the 1920s. By the 1950s mechanical filters were being manufactured as self-contained components for applications in radio transmitters and high-end receivers. The high ""quality factor"", Q, that mechanical resonators can attain, far higher than that of an all-electrical LC circuit, made possible the construction of mechanical filters with excellent selectivity. Good selectivity, being important in radio receivers, made such filters highly attractive. Contemporary researchers are working on microelectromechanical filters, the mechanical devices corresponding to electronic integrated circuits.