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    High frequency converter for concrete vibrators. Easy-grip handle for convenient transportation. Converters with permanent magnets, brushless. Robust housing made from shock-resistant, splash-proof plastic to protect the converter.
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    Concrete Vibrators | High Frequency Generator AFG - ENAR

    In oscillating mechanical systems, nonlinearity is responsible for the departure from proportionality between the forces that sustain their motion and the resulting vibration amplitude. Such effect may have both beneficial and harmful effects in a broad class of technological applications, ranging from microelectromechanical devices to edifice structures. The dependence of the oscillation frequency on the amplitude, in particular, jeopardizes the use of nonlinear oscillators in the design of time-keeping electronic components. Nonlinearity, however, can itself counteract this adverse response by triggering a resonant interaction between different oscillation modes, which transfers the excess of energy in the main oscillation to higher harmonics, and thus stabilizes its frequency. In this paper, we examine a model for internal resonance in a vibrating elastic beam clamped at its two ends. In this case, nonlinearity occurs in the form of a restoring force proportional to the cube of the oscillation amplitude, which induces resonance between modes whose frequencies are in a ratio close to
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    High frequency generators

    Yearley, Westfield, N. Audi, Elmhurst, N. Sticking of the cast in the semi-solidified state to the mold surfaces is overcome or eliminated by such vibration, which also improves and controls the surface quality of a casting and its grain structure. The displacement of the components being vibrated are usually of quite limited amplitude, usually not exceeding A inch, with frequencies of several hundred to several thousand cycles per minute. The mode of vibration can be sinusoidal, some nonlinear relation other than sinusoidal, and by a periodic impact as by a blow from a spring-loaded trip hammer or the like.
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