Solid state switch with over-temperature and over-current...

Details Solid state switch with over-temperature and over-current... Solid state switch with over-temperature and over-current...

2011-08-23

2011-08-23

Paschall, Mark H (Department: 3742)

Electric heating

Heating devices

With power supply and voltage or current regulation or...

C219S497000, C219S202000, C219S205000, C219S519000, C123S556000

Reexamination Certificate

active

08003922

ABSTRACT:
An intake air heating system for an internal combustion engine includes an electric heater that heats the intake air, a control circuit that switches a voltage to the electric heater based on a control signal and an over-temperature signal, a temperature sensor that generates a temperature signal based on a temperature of the control circuit, and a temperature sensing circuit that generates the over-temperature signal based on the temperature signal and a predetermined temperature.

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