Monitoring the characteristics of a load driver controlled by a

Details Monitoring the characteristics of a load driver controlled by a Monitoring the characteristics of a load driver controlled by a

1994-06-03

1995-09-05

Voeltz, Emanuel T.

Boots, shoes, and leggings

364550, 364580, 36457104, 324503, 324509, 324510, 324512, 324522, 324523, 371 28, 307 15, 307 31, 307 37, 307 39, 307 52, G01R 19165

Patent

active

054484928

ABSTRACT:
Loads, such as power relays controlling wipers, windows and lights are connected to an automobile battery through individual transistor drives that are controlled by a microcontroller. A switch, connected to the microcontroller, is operated to activate each drive. The microcontroller checks the load characteristic when each drive is activated and inactivated. When the load is inactivated, it is part of a resistance network producing a test voltage that is digitally converted and supplied to the microcontroller, which compares the test voltage to a stored voltage to determine if the load is correct. An analog multiplexer is controlled by the microcontroller to select the voltage produced for each load.

REFERENCES:
patent: 4511947 (1985-04-01), Melocik et al.
patent: 4639609 (1987-01-01), Floyd et al.
patent: 4791520 (1988-12-01), Stegmuller
patent: 4803592 (1989-02-01), Ashley
patent: 4884033 (1989-11-01), McCorchie, Sr.

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