Noise Suppression Circuit Board Design For An Inductive Heater

摘要

A noise suppression circuit board design to provide a power supply to an inductive heating element is disclosed. The noise suppression circuit provides a configuration for a multi-layer circuit board that has radiation noise emissions below the CISPR 11 (limits and methods of measurements of radio disturbance characteristics of industrial, scientific and medical (ISM) radio-frequency equipment) thresholds in the 30 MHz to 1 GHz frequency range.

主权项

1. A circuit board design for an inductive heater assembly, comprising:
a multilayer circuit board for mounting a plurality of circuit components, the multilayer circuit board including:
a top layer consisting of an etched copper foil on a core coated with an insulation layer, said top layer having a plurality of circuit trace lines and a plurality of vias, said top layer further including a plurality of ground cut lines etched through said copper foil to segregate the ground portions of the copper foil into zones for mounting respective circuit components;at least one middle layer on a core including a plurality of vias matching the plurality of vias of said top layer; anda bottom layer consisting of an etched copper foil on a core coated with an insulation layer, said bottom layer having a plurality of circuit trace lines and a plurality of vias, said plurality of vias matching the plurality of vias of said top layer, said bottom layer further including a plurality of ground cut lines etched through said copper foil to segregate the ground portions of the copper foil into zones.