Pulse generator provided with a duty-factor limiting function

Details Pulse generator provided with a duty-factor limiting function Pulse generator provided with a duty-factor limiting function

2003-02-25

2010-10-05

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Rectangular or pulse waveform width control

C327S124000, C327S131000, C327S184000, C327S291000

Reissue Patent

active

RE041791

ABSTRACT:
In a pulse generator, a sawtooth-shaped wave generator circuit generates a sawtooth-shaped wave by charging and discharging a capacitor. The sawtooth-shaped wave is fed to a comparator that performs pulse-width modulation on it in accordance with the voltage it receives via a terminal and thereby produces pulses. The comparator has its output grounded through a transistor that is turned on with appropriate timing by the sawtooth-shaped wave generator circuit. Thus, the maximum duty factor of the output pulses is made equal to the duty factor of the sawtooth-shaped wave.

REFERENCES:
patent: 4360747 (1982-11-01), Ryan
patent: 4638255 (1987-01-01), Penney
patent: 5315260 (1994-05-01), Link et al.
patent: 5387882 (1995-02-01), Schoofs

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