Circuit and method for determining current in a load

Details Circuit and method for determining current in a load Circuit and method for determining current in a load

2011-05-31

2011-05-31

Berhane, Adolf (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

Reexamination Certificate

active

07952333

ABSTRACT:
A circuit (1) is described for determining the current (Iload) in a load (6), the circuit having a main transistor (2) and a sense transistor (3), each transistor having a main current path (4, 5) and a control terminal (9, 10), the main current paths each operably connected in parallel between the load and a ground terminal (7) and the control terminals being connected together. Means is provided for setting the voltage across the main current path (5) of the sense transistor (3) to a voltage level substantially equal to a predetermined portion of the voltage across the main current path (4) of the main transistor (3).

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patent: 2004/0155662 (2004-08-01), Graf et al.
patent: 2010/0156383 (2010-06-01), Mikami et al.
patent: 85 1 02113 (1987-01-01), None
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