Constant current circuit used for ring oscillator and charge...

Oscillators – Ring oscillators

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C331S185000, C331S175000, C327S536000

Reexamination Certificate

active

07068114

ABSTRACT:
A first current flowing through a first resistance is determined by a series connection between a first resistance and a transistor which is short circuited between the gate and the drain. Further, a second current flowing through a second resistance is determined by a series connection between a resistance and two or more transistors each having a short circuit between the gate and the drain. By drawing the second current from below the first resistance, a current fed through a reference transistor is established to be equal to (the first current)−(the second current). The second current starts flowing when the source voltage is equal to or greater than the summed values of the voltage drops between the gate and the source of the two or more transistors. Therefore, the second current becomes zero when the source voltage is lower than a predetermined value. In this manner, a sufficient amount of current is output when the source voltage is relatively low, and the constant current output when the source voltage is high can be controlled so as not to be unnecessarily large.

REFERENCES:
patent: 6809603 (2004-10-01), Ho
patent: 7-298607 (1995-11-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Constant current circuit used for ring oscillator and charge... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Constant current circuit used for ring oscillator and charge..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Constant current circuit used for ring oscillator and charge... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3706299

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.