Prosthetic Elbows
... electric elbow is that it adds extra weight to the limb, making it heavier than a mechanical elbow. The amputee must weigh the benefits of the extra function over the extra weight, especially for those with high levels of amputation. Another issue to consider is the high cost of some of the items, a ...
... electric elbow is that it adds extra weight to the limb, making it heavier than a mechanical elbow. The amputee must weigh the benefits of the extra function over the extra weight, especially for those with high levels of amputation. Another issue to consider is the high cost of some of the items, a ...
Aalborg Universitet Network
... and series RL + shunt C weak grid, the parameters of the DFIG system are available in Table I. As it can be seen, the RSC controls the rotor voltage to deliver the stator output active and reactive power, GSC is responsible for maintaining stable dc-link voltage, and the LCL filter is adopted due to ...
... and series RL + shunt C weak grid, the parameters of the DFIG system are available in Table I. As it can be seen, the RSC controls the rotor voltage to deliver the stator output active and reactive power, GSC is responsible for maintaining stable dc-link voltage, and the LCL filter is adopted due to ...
On Universal Modeling of the Bulk Acoustic Wave
... advanced reconfigurable/adaptable microwave circuits. In particular, the focus of the attention remained up till now on tunability which is provided when external variable bias voltage is applied to FBAR. This voltage influences the BAW velocity in the layers forming the system and therefore on its ...
... advanced reconfigurable/adaptable microwave circuits. In particular, the focus of the attention remained up till now on tunability which is provided when external variable bias voltage is applied to FBAR. This voltage influences the BAW velocity in the layers forming the system and therefore on its ...
Low-Frequency RFID in a Nutshell
... The RF voltage is the voltage that is generated by the magnetic field of the RFID base station at the transponder antenna. The RF voltage is limited by the internal RF limiter of the transponder. The RF voltage is used to charge the VCL capacitor (typically 220 nF); VCL is the operating voltage for ...
... The RF voltage is the voltage that is generated by the magnetic field of the RFID base station at the transponder antenna. The RF voltage is limited by the internal RF limiter of the transponder. The RF voltage is used to charge the VCL capacitor (typically 220 nF); VCL is the operating voltage for ...
Mechanical methods of measuring pressure have been
... component in a pressure transducer. Strain gagetype pressure transducers are widely used. Strain-gage transducers are used for narrow-span pressure and for differential pressure measurements. Essentially, the strain gage is used to measure the displacement of an elastic diaphragm due to a difference ...
... component in a pressure transducer. Strain gagetype pressure transducers are widely used. Strain-gage transducers are used for narrow-span pressure and for differential pressure measurements. Essentially, the strain gage is used to measure the displacement of an elastic diaphragm due to a difference ...
3 Basic Electrical Measurements
... low price. The most important advantage is that the majority of such instruments can work without any additional power supply. Since people’s eyes are sensitive to movement also this psycho-physiological aspect of analogue indicating instruments (with moving pointer) is appreciated. On the other han ...
... low price. The most important advantage is that the majority of such instruments can work without any additional power supply. Since people’s eyes are sensitive to movement also this psycho-physiological aspect of analogue indicating instruments (with moving pointer) is appreciated. On the other han ...
APN1015: A Dual-Band Switchable IF VCO for GSM/PCS Handsets
... Figure 2a shows a simplified resonator design, minimizing the component count, thus minimizing cost and space. Resonator inductors L1 and L2 are also used as varactor biasing chokes. However, this circuit has some drawbacks. One is a lack of design flexibility caused by discrete choices of available ...
... Figure 2a shows a simplified resonator design, minimizing the component count, thus minimizing cost and space. Resonator inductors L1 and L2 are also used as varactor biasing chokes. However, this circuit has some drawbacks. One is a lack of design flexibility caused by discrete choices of available ...
Reduction of coupling capacitance, using a capacitor
... is shown in Figure 2 (b). In this figure Rb is the output resistance of bias circuit and Ri is the amplifier input resistance. ...
... is shown in Figure 2 (b). In this figure Rb is the output resistance of bias circuit and Ri is the amplifier input resistance. ...
Equipping of Deep-Drawing Press with Force Measurement
... easily formed, such as low-carbon steel (Philip, Bolton 2002, 327), but basically can be anything that deforms plastically at a wide range of deformation before failing. “A low-yield, high-tensile, and high-uniform elongation all combine to indicate a large amount of useful plasticity” (Black, Kohse ...
... easily formed, such as low-carbon steel (Philip, Bolton 2002, 327), but basically can be anything that deforms plastically at a wide range of deformation before failing. “A low-yield, high-tensile, and high-uniform elongation all combine to indicate a large amount of useful plasticity” (Black, Kohse ...
Design and Implementation of a Lithium-ion Cell
... The field of energy storage has improved drastically within the last two decades. Batteries of various chemistries have been relied on to provide energy for numerous portable electronic devices. Lithium-ion cells, when compared to other chemistries have been known to provide outstanding energy-to-we ...
... The field of energy storage has improved drastically within the last two decades. Batteries of various chemistries have been relied on to provide energy for numerous portable electronic devices. Lithium-ion cells, when compared to other chemistries have been known to provide outstanding energy-to-we ...
2. Proposed Circuits
... element values: R1 = R2 = 1 kΩ and C = 5 nF, which results in Leq = 5 mH in parallel with a resistance with the value of Req = 500 Ω. The ideal and simulated magnitude and phase responses where the second port of the floating simulator is grounded are shown in Fig. 9. For the floating and grounded l ...
... element values: R1 = R2 = 1 kΩ and C = 5 nF, which results in Leq = 5 mH in parallel with a resistance with the value of Req = 500 Ω. The ideal and simulated magnitude and phase responses where the second port of the floating simulator is grounded are shown in Fig. 9. For the floating and grounded l ...
Lokal fulltext - Chalmers tekniska högskola
... to magnetic fields. We show that the fractal resonator, after further optimization, can maintain quality factors above 105 in applied fields of more than 400 mT, something that becomes particularly useful for the interrogation of spin ensembles √ coupled to the resonator. We demonstrate that it is p ...
... to magnetic fields. We show that the fractal resonator, after further optimization, can maintain quality factors above 105 in applied fields of more than 400 mT, something that becomes particularly useful for the interrogation of spin ensembles √ coupled to the resonator. We demonstrate that it is p ...
Guidance on the management of safe isolation procedures for
... Access to these areas should be controlled and restricted to competent persons or persons who are under supervision in accordance with the site electrical safe systems of work. The access doors should be locked when electrical operatives are not working in these areas and danger notices warning of a ...
... Access to these areas should be controlled and restricted to competent persons or persons who are under supervision in accordance with the site electrical safe systems of work. The access doors should be locked when electrical operatives are not working in these areas and danger notices warning of a ...
GEOPHONE SPURIOUS FREQUENCY
... higher distortion or a lees robust design; more prone to damage, reducing field life. These are all direct consequences of stiffening the spring to push the spurious resonance to higher frequencies. The stiffer springs place more stress on the spring arms when they are flexed in their flat plane. Of ...
... higher distortion or a lees robust design; more prone to damage, reducing field life. These are all direct consequences of stiffening the spring to push the spurious resonance to higher frequencies. The stiffer springs place more stress on the spring arms when they are flexed in their flat plane. Of ...
Low voltage co-fired multilayer stacks, rings and
... orientation not floating). One of most widespread design mistake is coupling a plain-faced actuator directly to a plain-faced guided mechanism (Fig. 17 b) Even the slightest misalignment between the orientations of the both plains leads immediately to edge squeezing with very high local spot pressur ...
... orientation not floating). One of most widespread design mistake is coupling a plain-faced actuator directly to a plain-faced guided mechanism (Fig. 17 b) Even the slightest misalignment between the orientations of the both plains leads immediately to edge squeezing with very high local spot pressur ...
M CMOS-MEMS R
... devices is presented corroborating the ability of the presented monolithic approach in measuring the frequency characteristics of sub-micrometer scale beam resonators. Optimal electrostatic transduction is achieved measuring electrical frequency responses with high peaks (up to 20 dB or more) and la ...
... devices is presented corroborating the ability of the presented monolithic approach in measuring the frequency characteristics of sub-micrometer scale beam resonators. Optimal electrostatic transduction is achieved measuring electrical frequency responses with high peaks (up to 20 dB or more) and la ...
NI SCB-68A User Manual and Specifications
... Under the copyright laws, this publication may not be reproduced or transmitted in any form, electronic or mechanical, including photocopying, recording, storing in an information retrieval system, or translating, in whole or in part, without the prior written consent of National Instruments Corpora ...
... Under the copyright laws, this publication may not be reproduced or transmitted in any form, electronic or mechanical, including photocopying, recording, storing in an information retrieval system, or translating, in whole or in part, without the prior written consent of National Instruments Corpora ...
IF3415111540
... dynamics and the random-like behavior of harmonics for a short term, consideration has been given to power electronic equipment known as an active power filter. An active power filter is simply a device that injects equal-but opposite distortion into the power line, thereby canceling the original po ...
... dynamics and the random-like behavior of harmonics for a short term, consideration has been given to power electronic equipment known as an active power filter. An active power filter is simply a device that injects equal-but opposite distortion into the power line, thereby canceling the original po ...
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.