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U.S. Department of Energy
Office of Scientific and Technical Information

Solar powered circuit having cmos and bipolar transistors

Patent ·
OSTI ID:6466407
N-stage bipolar transistors are provided in a semiconductor substrate by using a manufacturing process of a CMOS LSI used for driving a solar powered electronic appliance. A reference voltage from a solar cell is applied to a base of a first bipolar transistor, and bases of i-th (iless than or equal ton) bipolar transistors are connected to emitters of (i-1)-th bipolar transistors, thereby providing a constant voltage circuit in the semiconductor substrate.
Assignee:
Sharp Kabushiki Kaisha (Japan)
Patent Number(s):
US 4523217
OSTI ID:
6466407
Country of Publication:
United States
Language:
English