Voltage and temperature invariant current setting circuit

Details Voltage and temperature invariant current setting circuit Voltage and temperature invariant current setting circuit

2011-08-30

2011-08-30

Berhane, Adolf (Department: 2838)

Electricity: power supply or regulation systems

Self-regulating

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

C323S314000, C327S539000

Reexamination Certificate

active

08008904

ABSTRACT:
A current supply circuit provides current that is substantially invariant with voltage supply and temperature changes. The current supply circuit has an input node connectable to a voltage supply and an output node operable to provide an output current. The current supply circuit includes a current source circuit coupled to a reference voltage node and configured to provide the output current at the output node, wherein a voltage at the reference voltage node controls current output of the current source circuit. The current supply circuit also includes a reference-setting circuit coupled to the reference voltage node and operable to establish a reference current level of the current source circuit, a common-emitter circuit coupled to the input node, and an emitter-follower circuit coupled to the input node, the emitter-follower circuit having an input coupled to an output of the common-emitter circuit and an output coupled to the reference voltage node.

REFERENCES:
patent: 6285244 (2001-09-01), Goldberg
patent: 6417656 (2002-07-01), Shirai
patent: 6750722 (2004-06-01), Newman et al.
patent: 7057443 (2006-06-01), Nakamura
patent: 7375504 (2008-05-01), Mheen et al.
patent: 7609044 (2009-10-01), Huang
patent: 7609106 (2009-10-01), Watanabe
patent: 7760781 (2010-07-01), Manan
patent: 2004/0263144 (2004-12-01), Tseng et al.
patent: 2008/0111629 (2008-05-01), Davenport

Affiliated with

Also associated with

Rating

Voltage and temperature invariant current setting circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Voltage and temperature invariant current setting circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Voltage and temperature invariant current setting circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2685495