Electrostatic discharge and electromagnetic interference protect

Details Electrostatic discharge and electromagnetic interference protect Electrostatic discharge and electromagnetic interference protect

1988-12-28

1990-09-18

Pellinen, A. D.

Electricity: electrical systems and devices

Discharging or preventing accumulation of electric charge

H05F 300

Patent

active

049582550

ABSTRACT:
The protection circuit of the invention connects differentiated grounds in an electronic system either by a single diode, or by two diodes arranged in a back-to-back, parallel fashion. The differentiated grounds may include a chassis ground, a logic ground and an earth ground. The circuit locally connects two of the differentiated grounds, thereby providing a low inductance path for the fast discharging of electrostatic charge build-ups, with the diode(s) therein providing the electrical separation necessary to provide proper local isolation between the interconnected grounds to enable filtering out of electromagnetic interference potentials.

REFERENCES:
patent: 4523252 (1985-06-01), Wallen
patent: 4715086 (1987-12-01), Johanson et al.
patent: 4720048 (1988-01-01), Maroney et al.

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