Electrically isolated module

Details Electrically isolated module Electrically isolated module

2005-07-19

2005-07-19

Thompson, Gregory (Department: 2835)

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

C165S080300, C165S185000, C257S707000, C257S713000, C361S600000, C361S679090, C361S710000, C361S715000, C173S049000

Reexamination Certificate

active

06920047

ABSTRACT:
An electronic control module provides dual insulation layers between an internal line voltage and a separate tool housing that serves as a heat sink, thereby allowing versatility in mounting the electronic control module within the tool housing interior, and thereby also eliminating the risk of electrical shock to a user making contact with an exterior tool housing surface. The control module includes a power device, connected to a line voltage, and a thermal pad. The power device provides a first layer of electrical insulation between the line voltage and an external tab of the power device while the thermal pad provides a second layer of electrical insulation. The combined first and second layers provide a minimum amount of electrical insulation between the line voltage and the tool housing thereby preventing electrical shock. Alternatively, the thermal pad is provided between the control module and the tool housing.

REFERENCES:
patent: 3911327 (1975-10-01), Murari et al.
patent: 5558166 (1996-09-01), Chen
patent: 5909358 (1999-06-01), Bradt
patent: 5926373 (1999-07-01), Stevens
patent: 6320286 (2001-11-01), Ramarathnam

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