Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se
Reexamination Certificate
2005-04-05
2005-04-05
Tang, Minh N. (Department: 2829)
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
C324S1540PB, C388S833000, C318S254100
Reexamination Certificate
active
06876184
ABSTRACT:
The invention relates to a circuit arrangement for measuring the current consumption of a transistor-controlled load, in particular of an electromotor, whereby a load current (IL) is detected by measuring the controlling current (IT2) of an output bipolar transistor (T1). The controlling current (IT2) is detected using the voltage drop across an internal measuring shunt (R1). As the controlling current (IT2) is substantially smaller than the load current, the power losses are negligible in comparison with a measuring shunt that is connected in series to the load. In addition, there is no need for a controlling unit input, to which an external measuring-circuit voltage is applied.
REFERENCES:
patent: 4008426 (1977-02-01), Ogura
patent: 5828308 (1998-10-01), Fukami
patent: 5867014 (1999-02-01), Wrathall et al.
patent: 6041163 (2000-03-01), Cherry, Jr.
patent: 4101492 (1993-07-01), None
patent: 19520735 (1999-07-01), None
patent: 19844465 (2000-04-01), None
patent: 0688077 (1995-12-01), None
patent: 2642176 (1990-07-01), None
patent: 07077546 (1995-03-01), None
Cohen & Pontani, Lieberman & Pavane
Fujitsu Siemens Computers GmbH
Tang Minh N.
LandOfFree
Circuit arrangement for measuring the current consumption of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Circuit arrangement for measuring the current consumption of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit arrangement for measuring the current consumption of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3387823