Oscillators – Solid state active element oscillator – Transistors
Patent
1995-04-20
1996-04-16
Grimm, Siegried H.
Oscillators
Solid state active element oscillator
Transistors
331143, H03K 3017, H03K 30231
Patent
active
055086640
ABSTRACT:
An oscillator comprises a comparator and first and second switches for alternately connecting first and second respective reference voltages to a first input of the comparator. A capacitor is connected to a second input of the comparator, and a current source and a current sink are alternately connected to the capacitor via third and fourth switches. The first and third switches are closed simultaneously based on one output level of the comparator, and the second and fourth switches are closed simultaneously based on the other output level of the comparator. This causes the output of the compartor to alternate and thereby generate an oscillation signal. To provide precision in the duty cycles, either the second reference voltage, the current source or the current sink is adjusted to maintain desired duty cycles of the high and low levels output from the comparator. The adjustment to the second reference voltage, current source or current sink is based on an average voltage of the capacitor in relation to a third reference voltage.
REFERENCES:
patent: 3742384 (1973-06-01), Breitzmann et al.
patent: 4260959 (1981-04-01), Allgood
patent: 4692717 (1987-09-01), Ouyang et al.
Grimm Siegried H.
International Business Machines - Corporation
Samodovitz Arthur J.
LandOfFree
Oscillators having charge/discharge circuits with adjustment to does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Oscillators having charge/discharge circuits with adjustment to , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oscillators having charge/discharge circuits with adjustment to will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-328039