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1. Introduction - About the journal
1. Introduction - About the journal

... two grounded capacitors. For those applications that voltage-mode filters are required, because current-mode filters need other active devices to change the current-mode signals into voltage-mode, the use of additional active devices will add parasitic capacitors and resistors into the main circuit, ...
PROTOR-mobile
PROTOR-mobile

as a PDF
as a PDF

... Maheshwari reported current-mode all-pass, high-pass and low-pass filter sections based on DVCC, which forms the background for the present work. [9]. Minaei & Ibrahim presented a mixed-mode universal filter based on the KHNbiquad topology employing DVCCs [8]. Another voltage mode all-pass filter us ...
Course Number: ELE 115-Basic Electricity (3 CR)
Course Number: ELE 115-Basic Electricity (3 CR)

LCR and resonance
LCR and resonance

Experiment SIG1: Active Low-Pass Filter Design
Experiment SIG1: Active Low-Pass Filter Design

...  Dual-trace oscilloscope  Function generator  Connecting wires ...
clicking here
clicking here

Round Exit Velocity Measurement Using Fiber Bragg Grating
Round Exit Velocity Measurement Using Fiber Bragg Grating

... Introduction Optical fiber Bragg grating sensors (FBGs) have been extensively used for strain sensing applications in harsh environments. The purpose of this research is to develop a system to measure the round exit velocity (REV) of a moving projectile in a medium caliber gun barrel through the use ...
Round Exit Velocity Measurement Using Fiber Bragg Grating Sensors Test results Introduction
Round Exit Velocity Measurement Using Fiber Bragg Grating Sensors Test results Introduction

... Introduction Optical fiber Bragg grating sensors (FBGs) have been extensively used for strain sensing applications in harsh environments. The purpose of this research is to develop a system to measure the round exit velocity (REV) of a moving projectile in a medium caliber gun barrel through the use ...
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)

... electronic amplifier, the input signal is usually a voltage or a current. A preamplifier (preamp) is an electronic amplifier that prepares a small electrical signal for further amplification or processing. A preamplifier is often placed close to the sensor to reduce the effects of noise and interfer ...
Slayt Başlığı Yok
Slayt Başlığı Yok

Low Sensitivity Third Order Lowpass Butterworth Filter Using CFA
Low Sensitivity Third Order Lowpass Butterworth Filter Using CFA

Lecture - Montana State University
Lecture - Montana State University

... • Now lasers, optics, microfabrication, etc. ...
Design of Third-Order Square-Root-Domain Filters Using
Design of Third-Order Square-Root-Domain Filters Using

... low-pass LC filter is proposed in [30]. A realization of thirdorder active switched-capacitor filter is proposed in [31]. In this study, square-root-domain third order low-pass Butterworth and Chebyshev filters have been designed using state-space-synthesis method with square-root and squarer/divide ...
IOSR Journal of VLSI and Signal Processing (IOSR-JVSP)
IOSR Journal of VLSI and Signal Processing (IOSR-JVSP)

... Most of the conventional analog circuits are in voltage mode whose performance is evaluated in terms of voltage level [1]. But such circuits suffer from various drawbacks like higher supply voltage, low slew rate, etc. and they are also not suitable for high frequency applications thus, limiting the ...
Drake TR-7 improvements
Drake TR-7 improvements

... undertake one more step, which allowed slight further improvement of the Rx audio with little additional work or risk. Following the suggestions seen in the PA0CMU site http://members.ziggo.nl/cmulder/drake.htm#bookmark6 I experimented with changing a few capacitors and 2 transistors in the 2nd IF b ...
1.5V Square-Root Domain Band-Pass Filter With Stacking Technique
1.5V Square-Root Domain Band-Pass Filter With Stacking Technique

... band-pass filter. The band-pass is realized by using current mirrors, three current-mode square-root circuit blocks and two capacitors. V2 is the desired output voltage and U is a DC biased input voltage. The MOSFET current-mode square-root circuit is used to obtain the square-root of two currents. ...
Course code……EL-212…... Course title… Electrical Network
Course code……EL-212…... Course title… Electrical Network

... This lab gives the foundation on which most other courses in electrical engineering curriculum rest. Subject areas included are, AC circuit quantities, AC voltage and currents, Phase measurements, Phase Shifters, AC bridges, Capacitance Multiplier, Oscillators, Kirchhoff’s Laws, Power factor Measure ...
Line filter, SK HLD 110
Line filter, SK HLD 110

... Work must not be carried out unless the device has been disconnected from the voltage and at least 5 minutes have elapsed since the mains was switched off! ...
Chapter 4 (Resonance Circuit)
Chapter 4 (Resonance Circuit)

... Value of C that will produce a quality factor of 50. Find 1 , 2 and . Determine average power dissipated at  = o , 1 and 2. Take Vm = 100V ...
RANE`S MP2015 ROTARY MIXER TECHNOLOGY
RANE`S MP2015 ROTARY MIXER TECHNOLOGY

Current-Mode Second-Order Square-Root
Current-Mode Second-Order Square-Root

... because they can operate at high frequency applications (Frey, 1993; Kircay and Cam, 2006; Kircay and Cam, 2008; Mulder, 1996; Mulder, 1998; Mulder et al., 2000; Seevinck, 1990; Tsividis, 1990). A significant class of dynamic translinear circuits and companding filters is square-root-domain filters ...
Notch Tone Control
Notch Tone Control

... filter with a potentiometer to pan between the two responses. When the wiper is all the way to the right, you get the classic notch response. With the wiper all the way to the left, the audio is low passed and much of the high frequencies are attenuated. In between, some of the highs are dialed back ...
RiverbeckConfPaper160516
RiverbeckConfPaper160516

LVDTs in Place of Variable Inductors - Trans
LVDTs in Place of Variable Inductors - Trans

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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.
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