This kind of system is disclosed in Japanese Patent Laid Open Publication No. 58-193510, amongst other sources. It is an extra object of the present invention to supply such a solar tracking device can cut back the drive energy necessities for driving the rotatable table to a particularly low level, and can help and drive the rotatable table with a easy construction. FIGS. 4(a) to 4(c) are illustrative drawings for describing the solar tracking motion of the primary most well-liked embodiment sun tracking device. FIG. 5 is a side view thereof. FIGS. 6(a) to 6(c) are plan view for illustrating the sun monitoring action of the second most well-liked embodiment sun tracking device. FIG. 8 is a plan view thereof. FIG. 9 is a aspect view thereof. FIG. 10 is a plan view exhibiting a solar power generating system which contains a fifth most popular embodiment of the sun tracking device in response to the present invention.
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