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# Natural Frequency

49 Threads found on edaboard.com: Natural Frequency

## how to specify the natural resonance of the inductor in hfss

Hi everyone, I am trying to do two-band antenna and use inductor as selective network for frequency separation. And how to specify the natural resonance of the inductor with interturn capacitance, when it similar to parallel oscillating loop? 137457 137458 Thanks in advance.

## Natural Frequency vs Damped Frequency

In Mechanical Engineering the natural frequency is defined as the frequency at which a system oscillates when not subjected to a continuous or repeated external force. This frequency can be calculated simply by the following relationship: wn=sqrt(k/m) where k is the stiffness and m is the mass of the system. The damped (...)

## matching affects on resonant frequency

A resonator has an unloaded resonant frequency and Q factor. Whenever you attach anything to the resonator, even to measure it, you load the resonator, resulting in a shift in the resonant frequency and Q factor. To get the most effecient system, you should try to design around the natural unloaded f0 to get the highest Q, but it is possible (...)

## listening to two SSB stations, one sounds like donald duck

Hi, there are many times when listenning a conversation between two HF ssb stations from different locations (DX). I tune to the first station and the sound is natural. However the other station sounds a bit like donald duck. This sound is common to SSB radio when the RX frequency is not exactly tuned to TX. However, in the case above, why one s

## Choosing the natural frequency wn for a PLL?

The natural frequency of a system is the frequency at which it would oscillate (say, for a step input) if there is no damping. So does this mean, the ideal natural frequency should be as low as possible? So that it does not oscillate and just settles quickly I have a PLL with an output (...)

## Action detect with accelerometer

Hello guys, I have a electronic and I want know when it's moved. I did simple algorithm to eliminate natural error in accelerometer, but I´m problem with vibration. If I put electronic in my hand, my natural vibration is read how action. I only want detect when my electronic is displaced. Anybody have idea for algorithm? I use ADXL 345.

## Control Systems- Concept of dominant pole

Hi, I have got a few simple questions: 1. Is a dominant pole the one with the least natural frequency? 2. Is the pole with least natural frequency necessarily with the maximum damping aswell? 3. Although the I have asked above two questions, another things that is confusing me is that isn't damping ratio for a (...)

## 20KHz Instrumentation Amplifier

For single supply Vcm must be <2V away from supply rails ( 1.2~1.6) For split supply same applies, but 0V is natural Vref for Vref centre tap. No bias R needed, Lots of gain needed though.

## PLL 3dB Bandwidth and simple AC Linear Model for simulation

What is the formula for the 3dB bandwidth of a PLL in terms of the natural frequency and damping??? All the formulas I see online are giving me one answer, but when I create a simple linear AC test bench in Cadence and do an AC simulation, I am getting a different answer. Can somebody look at this test bench and tell me if I am doing something

## Switching Frequency Effect on Loop Gain

Without an exact system description, you can't derive the continuous time equivalent transfer function you are looking for. It's particularly the pwm modulator characteristic (e.g. natural versus regular sampling) that produces different phase responses.

## Loop Antenna Bandwidth

1. A simple wire loop in this size results in 300 MHz BW for VSWR below 1:3 with a two components matching network. 2. There is no natural resonating frequency for a simple wire loop with length much shorter then actual wavelength. It is very easy to make an loop antenna with circumference 0.25 lambda as required network is very simple. Take

## Lossy Metal Vs Normal material type

In antennas it is natural to use good conductors like copper and aluminum, to reduce loss. Skin depth is an important parameter, the more as the frequency grows. Surface polishing is also important. Lossy metals are generally not used as due to power dissipation, antenna power input will be limited. If your design needs to introduce certain lossy

## Intellisuite error in opening result file in TEM

I am designing a cantilever for obtaining as minimum possible natural frequency. Each time I complete the frequency analysis and go to results<natural frequency> an error is thrown that a file FEA_jon is not found and no such file or directory exists. What should be done in this case.

## why a crystal of 49.152M oscliate at 16.3M?

It is for sure an overtone crystal. This means that the crystal is ct at 1/3 of the oscillating frequency, but if you select the proper harminic, it will oscillate three times the natural frequancy. Due to parasitics, the natural frequency is not exactely 1/3 of the overtone frequency. Mandi

## Geophones natural frequency

Hello fellas, I am learning the concepts of prediction of vibrations using Geophones. And while deciding the specification to buy one I find that various companies mentioned about the natural frequencies of different Hz. Well, I am planning to go for natural frequency of 14 Hz but I want to know what is the role of natural (...)

## What is the natural time constant of a DC-DC converter

When we analyze the switching regulator, textbooks only mentioned that the switching frequency is much higher than time constant of converter itself. But nowhere mentioned what exactly this time constant is. Could anybody advise what is this? For example, we have a buck circuit with fsw=400kHz, how can we explain the switching frequency is much f

## Audio notch filter with variable Q and frequency needed

Audio notch filter with variable Q and frequency needed, to knock out interference in a natural radio receiver. Any schematic available? I have seen these twin-T filters compared with opamps are good enough

## oscillator standards

Atomic frequency standards utilize "natural" frequencies of internal quantum transitions in selected atoms. The most used are cesium and rubidium frequency standards, the highest stability is achieved with hydrogen masers. Commercial Cs and Rb frequency standards are available for < \$1k;their typical output is 5 or 10 MHz (...)

## designing high frequency amplifier with low output impedance

Are you sure that you need to drive the capacitive load with constant voltage respectively low impedance? It seems like a bad idea. The natural way to drive a capacitive load is a current source.

## frequency Methane gas

Assalam-o-alekum, plz let me know about the electromagnetic frequency of methane gas/ natural gas.