| 摘要 |
A printed circuit board for mounting electrical components such as LEDs has outward edge protrusions on which an electrically conductive material is deposited such that the board itself can be used to make electrical contact in a pre-existing, commercially available fitting, such as a screw-in or base fitting designed to receive incandescent light bulbs. For a screw-in fitting the board can optionally be made slightly wider than the inner diameter of the fitting but be provided with at least one axially extending slit; the board is then compressed slightly but biased outward to provide better electrical contact when inserted into the fitting.
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