Frequency Converter

FIG. 1 is a front view of a first embodiment of a frequency converter;

FIG. 2 is a rear side view of the first embodiment of the frequency converter;

FIG. 3 is a left side view of the first embodiment of the frequency converter;

FIG. 4 is a right side view of the first embodiment of the frequency converter;

FIG. 5 is a top view of the first embodiment of the frequency converter;

FIG. 6 is a bottom view of the first embodiment of the frequency converter;

FIG. 7 is a perspective view of the first embodiment of the frequency converter;

FIG. 8 is another perspective view of the first embodiment of the frequency converter;

FIG. 9 is a front view of a second embodiment of a frequency converter;

FIG. 10 is a rear side view of the second embodiment of the frequency converter;

FIG. 11 is a left side view of the second embodiment of the frequency converter;

FIG. 12 is a right side view of the second embodiment of the frequency converter;

FIG. 13 is a top view of the second embodiment of the frequency converter;

FIG. 14 is a bottom view of the second embodiment of the frequency converter;

FIG. 15 is a perspective view of the second embodiment of the frequency converter;

FIG. 16 is another perspective view of the second embodiment of the frequency converter;

FIG. 17 is a front view showing a third embodiment of a frequency converter;

FIG. 18 is a rear side view of the third embodiment of the frequency converter;

FIG. 19 is a left side view of the third embodiment of the frequency converter;

FIG. 20 is a right side view of the third embodiment of the frequency converter;

FIG. 21 is a top view of the third embodiment of the frequency converter;

FIG. 22 is a bottom view of the third embodiment of the frequency converter;

FIG. 23 is a perspective view of the third embodiment of the frequency converter;

FIG. 24 is another perspective view of the third embodiment of the frequency converter;

FIG. 25 is a front view showing a fourth embodiment of a frequency converter;

FIG. 26 is a rear side view of the fourth embodiment of the frequency converter;

FIG. 27 is a left side view of the fourth embodiment of the frequency converter;

FIG. 28 is a right side view of the fourth embodiment of the frequency converter;

FIG. 29 is a top view of the fourth embodiment of the frequency converter;

FIG. 30 is a bottom view of the fourth embodiment of the frequency converter;

FIG. 31 is a perspective view of the fourth embodiment of the frequency converter; and,

FIG. 32 is another perspective view of the fourth embodiment of the frequency converter.

The broken lines shown represent the portions of the frequency converter that form no part of the claimed design.