Triangular wave generator

Details Triangular wave generator Triangular wave generator

2008-06-03

2010-06-22

Nguyen, Hai L (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Generating sawtooth or triangular output

C327S137000, C327S140000

Reexamination Certificate

active

07741887

ABSTRACT:
Triangular wave oscillation circuits generate A-wave and B-wave with phases opposite to each other, and are capable of independently controlling oscillation levels of the A-wave and the B-wave. A slope switching circuit including an output voltage monitoring circuit, a slope switching control circuit, and an inverter, monitors output voltages of the triangular wave oscillation circuits, to switch an output voltage generation mode of one triangular wave oscillation circuit whose triangular wave reaches a high level, from an up-slope waveform mode to a down-slope waveform mode, and to switch an output voltage generation mode of the other triangular wave oscillation circuit, from the down-slope waveform mode to the up-slope waveform mode. An oscillation level control circuit controls an oscillation level of the other triangular wave oscillation circuit so that the output voltage of the other of the triangular wave oscillation circuit becomes a reference lower limit crest value during the switching.

REFERENCES:
patent: 4524334 (1985-06-01), Brajder et al.
patent: 5646967 (1997-07-01), Hee et al.
patent: 6121802 (2000-09-01), Luciano et al.
patent: 7348812 (2008-03-01), Ikezawa
patent: 7403049 (2008-07-01), Uchimoto et al.
patent: 2007/0052459 (2007-03-01), Ikezawa
patent: 2006-50310 (2006-02-01), None

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