el schematic diagram of the embodiment of the LED-based lamp assembly illustrated in FIGS. 1A and 1 B. [0052] FIG. 3 is a cross-sectional view of the LED-based lamp assembly embodiment of FIG. 1A viewed along section lines 3-3 thereof. [0053] FIG. 4 is a top plan view of one illustrative embodiment of an electrically conductive pattern formed on a top surface of the main circuit board of the LED-b