| http://www.w3.org/ns/prov#value | - While a power amplifier 24 is shown herein for the control of light intensity, it will be understood that it is within the scope of the present invention to control the operation of servomechanisms or other control mechanisms through amplifiers or relay devices in lieu of the lamp loads so as to regulate or control other variables of the light sources, such as for example, and not by way of limita
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