Electric heating – Heating devices – With power supply and voltage or current regulation or...
Reexamination Certificate
2007-03-27
2007-03-27
Paschall, Mark (Department: 3742)
Electric heating
Heating devices
With power supply and voltage or current regulation or...
C219S497000, C219S505000, C228S104000, C228S179100, C438S018000, C438S108000, C324S765010
Reexamination Certificate
active
11350446
ABSTRACT:
A solder-joint detection circuit uses a resistive bridge and a differential detector to detect faults in the solder-joint network both inside and outside the digital electronic package during operation. The resistive bridge is preferably coupled to a high supply voltage used to power the package. Resistors R1and R2are connected in series at a first junction between the high and low supply voltages and a resistor R3is coupled to the high supply voltage and connected in series with the resistance of the solder-network at a second junction. The network is held at a low voltage on the die. The detector compares the sensitivity and detection voltages and outputs a Pass/Fail signal for the solder-joint network.
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Hofmeister James P.
Spuhler Philipp S.
Vermeire Bert M.
Gifford Eric A.
Paschall Mark
Ridgetop Group, Inc.
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