Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Reexamination Certificate
2006-05-01
2008-07-29
Sterrett, Jeffrey L (Department: 2838)
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
C323S279000, C323S907000
Reexamination Certificate
active
07405547
ABSTRACT:
A stabilized DC power supply circuit of the present invention includes an output current limiting circuit for limiting an output current of an output transistor, and a correction circuit for correcting variation of restriction in the output current caused by variation in a current amplification factor of the output transistor. The correction circuit includes a correcting transistor that is manufactured in the same manufacturing process as the output transistor and formed so as to have the same tendency of manufacturing process variation in current amplification factor etc. as that of the output transistor.
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Birch & Stewart Kolasch & Birch, LLP
Sharp Kabushiki Kaisha
Sterrett Jeffrey L
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