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US 11,674,678 B2Granted
Apparatus with charge dissipation
AssigneeSignify Holding B.V.
InventorMaurice Lucien Eugene Casanova
Life of this patent
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Abstract
An electrical apparatus has an external conductive housing. A printed circuit board is provided (separate to a main circuit board of the apparatus) within a PCB housing. The printed circuit board is mechanically and electrically connected to the external housing and has an arc gap between a first contact which connects electrically to the external housing and a second contact which connects electrically to a power supply terminal. Thus, a dedicated circuit is used to perform a discharge function so that the housing and main circuit board do not need to be redesigned.
Claims15
An electrical apparatus comprising:
- an external housing including an electrically conductive portion;
- at least first and second power supply terminals for connection to an external source of power;
- a first printed circuit board in the external housing which carries a circuit;
- an electrically conductive screening layer attached to or integrated within the first printed circuit board, wherein the conductive screening layer is insulated from the external housing and from the circuit;
- a second printed circuit board, separate to the first printed circuit board;
- a PCB housing around the second printed circuit board and within the external housing, wherein:
- the second printed circuit board is mechanically connected to the external housing and electrically coupled to the electrically conductive portion of the external housing;
- the second printed circuit board comprises an arc gap between a first contact which connects electrically to the electrically conductive portion of the external housing and a second contact which connects electrically to one of the first and second power supply terminals.
5 more elements
Dependencies are inferred from the claim text.