Generator high-frequency

Screw compressors of the dry type generate high frequency pulsations that move into the system piping and can cause acoustic vibration problems. These would be similar to the type of problems experienced in reciprocating compressor applications, except that the frequency is higher. While volume bottles will work with the reciprocator, the dry type screw compressor would require a manufacturer-supplied proprietary silencer that should take care of the problem rather nicely. 

The generated high-frequency DC pulse current consists of high-quality square wave containing less harmonics or noises, which may interfere with other electronic devices nearby, such as computers or NC controllers. 

In addition to these conventional methods, ultrasonication has also been used, where shock waves are created due to the generated high frequency vibrations that disrupt the cells. It is a simple method, but consumes a lot of power, uses probes that have short working times, and generates heat during the process. Thus, most ultrasonication systems are contained in a cooling jacket. 

The resonant characteristics of each location are always the same however, different sources induce different resonant mode, specifically, large seismic sources generate low-frequency modes and small seismic sources generate high-frequency modes. 

Thanks to this ability to generate high frequency spectra, the TOP analyzers are particularly useful for coupling with two recent chromatographic techniques fast GC and two-dimensional GC. Both techniques are generally reserved for the analysis of very complex samples (see Chapter 2). ... 

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