Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Reexamination Certificate
2006-10-18
2009-06-09
Han, Jessica (Department: 2838)
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
C323S277000, C323S280000
Reexamination Certificate
active
07545127
ABSTRACT:
A parallel circuit27of a frequency control circuit11is provided as an external circuit. Thereby, the charging time t1depends on the characteristics of the circuit elements, which are provided in the package of a semiconductor device70and therefore subject to manufacturing variations of the semiconductor device70. The discharging time t2depends on the parallel circuit27, which is provided external to the semiconductor device70and therefore can be selected to have appropriate characteristics after the semiconductor device70has been manufactured. The circuit constants of circuits are set so that the discharging time t2that depends on the device characteristics of the external parallel circuit27is longer than the charging time t1that depends on the device characteristics of the internal circuits of the semiconductor device70.
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Furuichi Masahiko
Isshiki Isao
Kato Masayuki
Takahashi Seiji
Autonetworks Technologies Ltd.
Han Jessica
Oliff & Berridg,e PLC
Sumitomo Electric Industries Ltd.
Sumitomo Wiring Systems Ltd.
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