Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With rotor
Patent
1974-08-05
1976-03-30
Rolinec, R. V.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With rotor
322 99, G01R 3100, H02K 1100
Patent
active
039477649
ABSTRACT:
Method and apparatus for testing DC motors, particularly permanent magnet DC motors, involving application of a constant voltage across the motor terminals and at an earlier or later time causing a constant current to flow through the motor. The constant voltage is applied across the motor terminals for a first predetermined time interval during a portion of which the current flow through the motor is compared with a reference level. If the motor current falls below the reference level during the portion of the first predetermined time interval the motor is defective. The constant current is caused to flow through the DC motor for a second predetermined time interval. If at the end of this second predetermined time interval, the DC motor terminal voltage is below a first level or above a second level, that is, the terminal voltage is outside an established voltage range, then the motor is found to be defective.
REFERENCES:
patent: 3052117 (1962-09-01), Miller et al.
patent: 3195044 (1965-07-01), Flanagan
Abbott Edward H.
Johnstone Robert L.
Brown Robert W.
Ford Motor Company
Karlsen Ernest F.
Rolinec R. V.
Zerschling Keith L.
LandOfFree
Method and apparatus for testing DC motors does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for testing DC motors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for testing DC motors will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-523860