adjustable amplitude high frequency

High Frequency and Variable Amplitude Vibrodrivers ...

PTC's high frequency vibrator with hydraulically controlled variable eccentricity was introduced in 1992, and has the ability to start up and stop without any vibration. The HFV vibrators exceed international norms for limiting noise and vibration emissions, and enabling operation in sensitive areas or close to delicate equipment.

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Amazon : VT003F Vibration Plate High Frequency 15 ...

[High Frequency / Low Amplitude] VT003F vibration plate is a high frequency, low amplitude linear vibration plate. The wide range adjustable frequency from 15Hz to 40Hz, and the two-amplitude switch make VT003F a versatile whole body vibration machine suitable for various purposes.

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Adjustable frequency amplitude function generator All ...

Jun 29, 2016  Following the internal layout of the 8038 function generator chip, start with the triangle wave formed by an integrator and comparator in a loop. The integrator resistor and capacitor set the operating frequency. This also gives you the square wave, and both are at constant amplitude regardless of frequency. The sine converter is tricky because ...

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Variable amplitude fatigue tests at high frequency hammer ...

Jan 01, 2016  Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of ECF21. 21st European Conference on Fracture, ECF21, 20-24 June 2016, Catania, Italy Variable amplitude fatigue tests at high frequency hammer peened welded ultra high strength steel S1100 Joern Berga*, Natalie Stranghoenera, Andreas Kernb, Marion Hoevelb ...

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US4545258A - Circuit with adjustable amplitude and rolloff ...

An electrical circuit provides an output signal having a frequency representative of an input signal which has a fundamental frequency responsive to a parameter. The circuit has an amplifier having an adjustable amplitude response with an input coupled to the input signal and an output for providing the output signal as a function of the input signal.

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EP0148249A4 - Circuit with adjustable amplitude and ...

EP0148249A4 EP19840902680 EP84902680A EP0148249A4 EP 0148249 A4 EP0148249 A4 EP 0148249A4 EP 19840902680 EP19840902680 EP 19840902680 EP 84902680 A EP84902680 A EP 84902680A EP 0148249 A4 EP0148249 A4 EP 0148249A4 Authority EP European Patent Office Prior art keywords circuit frequency amplifier signal rolloff Prior art date 1983-07-05 Legal status (The legal

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Adjustable Frequency Amplitude High Precision Function ...

Adjustable frequency and amplitude. Amplitude: 0-3V at 9V DC Input. Amplitude: 8V (no load) at 9V DC Input. This signal generator is professional product

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High Frequency and Variable Amplitude Vibrodrivers ...

PTC's high frequency vibrator with hydraulically controlled variable eccentricity was introduced in 1992, and has the ability to start up and stop without any vibration. The HFV vibrators exceed international norms for limiting noise and vibration emissions, and enabling operation in sensitive areas or close to delicate equipment.

Read More
EP0148249A4 - Circuit with adjustable amplitude and ...

EP0148249A4 EP19840902680 EP84902680A EP0148249A4 EP 0148249 A4 EP0148249 A4 EP 0148249A4 EP 19840902680 EP19840902680 EP 19840902680 EP 84902680 A EP84902680 A EP 84902680A EP 0148249 A4 EP0148249 A4 EP 0148249A4 Authority EP European Patent Office Prior art keywords circuit frequency amplifier signal rolloff Prior art date 1983-07-05 Legal status (The legal

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Variable amplitude fatigue tests at high frequency hammer ...

Variable amplitude fatigue tests at high frequency hammer peened welded ultra high strength steel S1100 Joern Berg a *, Natalie Stranghoener a , Andreas Kern b , Marion Hoevel b

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DENESTUS 110V Adjustable RF Signal Generator High ...

Jan 31, 2021  - Frequency range: 100 KHz to 150MHz (3 harmonic wave up to 450MHz) - Frequency accuracy: Over±5% - Output waveform: RF/AM signal waveform - Output impedance: 600Ω - Radio frequency output: Over 100Mv rms (when frequency ≤ 35MHz) - Level control: 1mV to100mV - External modulation: 150Hz to 1.5 KHz. Amplitude from 0 to 30% adjustable.

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Frequency (Low vs. High), Energy, Amplitude, and Power

Aug 11, 2019  High frequency vs Low frequency with formula (power) To demonstrate what frequencies have more power/energy, we need to describe and understand how the formulas are derived. We can derive our formula I = 2π^2ρf^2v∆s^2 (Elert, 2019). Where, I is power, π is a constant, ρ is Rho which is density, f is frequency, v is velocity (speed of ...

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High Frequency Variable Resistor All About Circuits

Nov 08, 2020  Hi, I'm looking for a variable resistor (rheostat) able to operate also with high frequency current. In particular, for my application, the current is sinusoidal with f=100kHz and amplitude of 40A. The range of variable resistance should be 0-200 Ohm and 0-10 kOhm (obviously for higher value...

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Eriez - Vibratory Screeners

Custom sizes, high frequency, low amplitude screeners ideal for fine mesh separation (4 mesh to 325 mesh). Sizes from 80 square inches (500 sq cm) to 24 square feet (2.2 sq m) of screening area. Ideal for dedusting or fine separation. Features adjustable amplitude, fixed 3600 cycle frequency, no maintenance drives.

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Lightweight Potential of Welded High-strength Steel Joints ...

Jan 01, 2015  Investigations with longitudinal stiffeners of the steel grade S700 under fully-reversed, constant amplitude loading and under variable amplitude loading with a straight-line spectrum show impressive fatigue strength improvement by high-frequency mechanical impact (HFMI) treatment.

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High-frequency ventilation - Wikipedia

High-frequency ventilation is a type of mechanical ventilation which utilizes a respiratory rate greater than four times the normal value. (>150 (V f) breaths per minute) and very small tidal volumes. High frequency ventilation is thought to reduce ventilator-associated lung injury (VALI), especially in the context of ARDS and acute lung injury. This is commonly referred to as lung protective ...

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FCC Commercial Element 3 pool, section 69

The amplitude modulated variable phase signal and the frequency modulated reference phase signal of a Very-high-frequency Omnidirectional Range (VOR) station used for aircraft navigation are synchronized so that both signals are in phase with each other at _____ of the VOR station.

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Seven Common Ways to Generate a Sine Wave Nuts Volts ...

One working example is to make R2 390 ohms and R1 a type 327 bulb. Other more elaborate schemes use an FET as a variable resistor to vary the gain. This circuit works and has a frequency of about 1,592 Hz. Output amplitude depends on the power supply voltages. Phase-Shift Oscillator

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Comparison of settings used for high-frequency chest-wall ...

Background: Cystic fibrosis (CF) patients commonly use a high-frequency chest-wall compression (HFCWC) device for airway clearance that generates oscillatory flow with a sine-wave configuration. Typical HFCWC settings combine a lower Vest inflation pressure setting (eg, 5 on the Vest's arbitrary 1-10 scale for the setting that controls the background pressure of the inflatable vest) with mid ...

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US9910453B2 - High voltage, high efficiency sine wave ...

High voltage, high efficiency sine wave generator with pre-set frequency and adjustable amplitude CA2942319A CA2942319C (en) 2015-09-25: 2016-09-19: High voltage, high efficiency sine wave generator with pre-set frequency and adjustable amplitude

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Adjustable Frequency Amplitude High Precision Function ...

Adjustable frequency and amplitude. Amplitude: 0-3V at 9V DC Input. Amplitude: 8V (no load) at 9V DC Input. This signal generator is professional product

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High frequency amplitude detector for GMI magnetic sensors.

Dec 19, 2014  A new concept of a high-frequency amplitude detector and demodulator for Giant-Magneto-Impedance (GMI) sensors is presented. This concept combines a half wave rectifier, with outstanding capabilities and high speed, and a feedback approach that ensures the amplitude detection with easily adjustable gain.

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Design and simulation of an adjustable amplitude vibration ...

Xu designed an adjustable amplitude vibration system for mechanical LFW equipment, as shown in Fig. 2, that is able to adjust the amplitude of a single crank-slider mechanism by a complicated hydraulic device (Xu, 2007). Electromagnetic vibration systems are usually used for lower load and high frequency conditions.

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High Frequency Whole Body Vibration Plate VT003F

Model VT003F vibration plate is a consumer grade high frequency linear vibration plate. It features an adjustable frequency range from 15Hz to 40Hz and two amplitude settings. Most other consumer grade vibration machines in the market are pivotal oscillation (see-saw motion) machines, which usually run on vibration frequency below 15Hz.

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US9910453B2 - High voltage, high efficiency sine wave ...

High voltage, high efficiency sine wave generator with pre-set frequency and adjustable amplitude CA2942319A CA2942319C (en) 2015-09-25: 2016-09-19: High voltage, high efficiency sine wave generator with pre-set frequency and adjustable amplitude

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Amplitude Adjustable Ultrasonic Welding Generator For ...

High quality Amplitude Adjustable Ultrasonic Welding Generator For Fabric Welding from China, China's leading 5% Fluctuation Ultrasonic Welding Generator product, with strict quality control 4 Core 32 Bit Ultrasonic Generator factories, producing high quality 2600W ultrasonic weld generator products.

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Frequency (Low vs. High), Energy, Amplitude, and Power

Aug 11, 2019  High frequency vs Low frequency with formula (power) To demonstrate what frequencies have more power/energy, we need to describe and understand how the formulas are derived. We can derive our formula I = 2π^2ρf^2v∆s^2 (Elert, 2019). Where, I is power, π is a constant, ρ is Rho which is density, f is frequency, v is velocity (speed of ...

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Variable frequency sinusoidal wave oscillator Forum for ...

Jan 06, 2012  Dear LvW Hi Thank your for your reply and attention. I used the variable oscillator with not gate , ( square wave ) and then i used a comparator to obtain , simultaneous square wave ( +-vcc) . and then i used an integrator circuit , ( with switch for selecting some RC networks of that integrator for variable frequencies) . thus i have a triangle wave and square wave with variable frequency.

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Amazon: Frequency Generator

WHDTS Adjustable Signal Generator, 1Hz-150KHz 1-Channel PWM Pulse Frequency DC 3.3V-30V 5-30mA LCD Display Module. 4.3 out of 5 stars. 157. $12.99. $12.

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Generating a variable frequency sine wave in Matlab ...

To calculate signal with variable frequency you have to keep phase angle, therefore it would be best to do something like: a[n+1] = a[n] + 2 * pi * f(t) where a is phase of sine wave at sample n, f(t) is you changing frequency. Then the sine wave can be generated easily: sin(a) matlab code for frequency going from 1 Hz to 4 Hz, in 2 seconds:

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What is a Signal Generator? Definition, Block Diagram and ...

Sweep frequency generator: It is a type of signal generator that has the ability to generate variable frequency sinusoidal waveform. Basically, in a sweep frequency generator, the output frequency automatically varies between 2 selected values. But, in this case, the amplitude of the signal is kept constant with the variation on frequency.

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110V High Frequency Adjustable RF Signal Generator Radio ...

Find many great new used options and get the best deals for 110V High Frequency Adjustable RF Signal Generator Radio Frequency 100kHz-150MHz at the best online prices at eBay! Free shipping for many products! ... Amplitude from 0 to 30% adjustable. - Norml operation: 50Hz to 20 KHz for any setting. - Temperature/Humidity: 10 oC to 35 oC/with ...

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Variable Bandwidth Filtering for Improved Sensitivity of ...

Methods. As shown in Figure 2, the general procedure that is used for computing phase-amplitude CFC metrics involves (1) obtaining the phase time series of a low-frequency band-passed signal; (2) determining the amplitude envelope of a high-frequency signal; (3) using a correlation measure that ascertains the dependence of the high-frequency amplitude envelope on the low-frequency phase,

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International Journal of Fatigue

High frequency testing Combined loading Variable amplitude fatigue Life prediction Small cracks abstract Aim of this study is an interpretation of the influence of variable-amplitude (VA) cycles ...

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