Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Patent
1996-04-08
1997-10-28
Berhane, Adolf
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
323303, G05F 144
Patent
active
056820933
ABSTRACT:
The invention relates to a method for reducing power consumption in an electronic device which includes a voltage regulator that has a transistor (T1) connected in series as regards the load current. The invention also relates to such a regulator and an electronic device using such a regulator. The base current (Ib) of the series transistor (T1) of the regulator is arranged to have different values according to how big a load current is required of the regulator. For that purpose, the regulator includes an extra intermediate input (Vsx) which switches the base current (Ib) to be conducted through an alternative current path (Re2, D1, T4) when the maximum load current is required.
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Berhane Adolf
Nokia Mobile Phones Ltd.
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