Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Power supply apparatus capable of detecting abnormality of current flowing through drive circuit










Image Number 7 for United States Patent #7355826.

A current detection unit starts sampling of a motor current at the timing when the motor current has exceeded a threshold value, and holds a maximum motor current value for each prescribed operation cycle. An abnormality determination unit determines whether the maximum motor current value is greater than the threshold value, and counts the number of times that the maximum motor current value continuously exceeds the threshold value. When the count value has reached at least 3, the abnormality determination unit generates and outputs a detection signal indicating abnormality in the motor current to a relay drive unit and a notification unit. The relay drive unit in receipt of the detection signal generates a signal to turn off the system relays. The notification unit generates and outputs a signal AL to display means outside the power supply apparatus.








 
 
  Recently Added Patents
Probe for ultrasound diagnostic apparatus
Method for spore detection
Combined imaging and radiation therapy
Cationic polymers for antimicrobial applications and delivery of bioactive materials
Apparatus for preventing overcharge of a battery
System and method for combining different tablets into a pouch
Universal data-driven computer proxy
  Randomly Featured Patents
Methods and systems for fulfilling a prepaid telecommunication services account
Method of implicit deassignment of resources
Stackable tray for compact discs, DC-Roms and other discs
Insulated drinking cups
Bubble lattice files with selected access channel positioning
Plant-based medicament for the treatment of Hepatitis C
Connection of two pipes and sealing ring for the connection
Cassette assembly for use with roentgen apparatus with automatic exposure control
Mattress structure
Frozen confection type food product and method for making same