Accurate RC oscillator having modified threshold voltages

Details Accurate RC oscillator having modified threshold voltages Accurate RC oscillator having modified threshold voltages

1995-07-11

1996-10-15

Grimm, Siegried H.

Oscillators

Solid state active element oscillator

Transistors

331143, H03K 30231

Patent

active

055658199

ABSTRACT:
An accurate RC oscillator circuit (10) for generating a signal of a predetermined frequency that accurately oscillates between two precise voltage levels, i.e., a low threshold voltage (V.sub.L) and a high threshold voltage (V.sub.H). The oscillator circuit uses first and second comparators (16, 18) having their outputs respectively coupled to set and reset inputs of a flip flop (20). The output of the flip flop is coupled to a series RC network for controlling the charging and discharging of the voltage across a capacitor (14) of the RC network. The interconnection (12) of the series RC network is coupled to an input of both the first and second comparators. The other input of the first comparator is coupled to a circuit (24) for applying a modified version (V'.sub.H) of the high threshold voltage such that the signal generated by the oscillator circuit does not exceed the precise high threshold voltage (V.sub.H). Likewise, the other input of the second comparator is coupled to a circuit (25) for applying a modified version (V'.sub.L) of the low threshold voltage such that the signal generated by the oscillator circuit does not fall below the precise low threshold voltage (V.sub.L).

REFERENCES:
patent: 4122241 (1978-10-01), Chen
patent: 4407588 (1983-10-01), Arichi et al.
patent: 4590444 (1986-05-01), Wilcox
patent: 4983931 (1991-01-01), Nakano
patent: 5036300 (1991-07-01), Nicolai

Affiliated with

Also associated with

Rating

Accurate RC oscillator having modified threshold voltages does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Accurate RC oscillator having modified threshold voltages, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Accurate RC oscillator having modified threshold voltages will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1249478