A solar thermal collector collects by . The term "solar collector" commonly refers to a device for, but may also refer to large power generating installations such as and, or to non--heating devices such as or .
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A power inverter, inverter, or invertor is a device or circuitry that changes (DC) to (AC). The resulting AC frequency obtained depends on the particular device employed. Inverters do the opposite of which were originally large electromechanical devices converting AC to DC.
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