Heater chip test circuit and methods for using the same

Details Heater chip test circuit and methods for using the same Heater chip test circuit and methods for using the same

2005-08-22

2009-12-22

Pham, Hai C (Department: 2861)

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Reexamination Certificate

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07635174

ABSTRACT:
Test circuits on heater chips for testing a heater circuit having a heater element and a first power device. The test circuit can include a second power device, a test device configured to hold the first power device off and the second power device on for a selected heater circuit when the test device receives a signal to activate the test circuit, and a common test output to transmit a signal indicative of a state of the selected heater circuit. Methods for using the same are also provided.

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