The controller 14 may be {HEAD ~ any conventional regulating pulse width modulator}, here model SG1526 manufactured by Silicon General Integrated Circuits, Inc., Westminster, {TAIL ~ Calif} 
manufactured by
The controller 14 may be { HEAD ~ any conventional regulating pulse width modulator } , here model SG1526 manufactured by Silicon General Integrated Circuits , Inc. , Westminster , { TAIL ~ Calif }
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