Pulse width modulation generating circuit

Details Pulse width modulation generating circuit Pulse width modulation generating circuit

2008-05-13

2008-05-13

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Rectangular or pulse waveform width control

C327S176000, C327S298000

Reexamination Certificate

active

11405076

ABSTRACT:
A pulse width modulation (PWM) generating circuit includes a first comparator, a first resistor, a second resistor, a third resistor, a fourth resistor, a capacitor, and a diode. The first resistor and the second resistor are connected in series between a voltage input and ground. The third resistor, the fourth resistor, and the capacitor are connected in series between the voltage input and ground. The first comparator has a non-inverting input connected to a node between the first resistor and the second resistor, an inverting input connected to a node between the fourth resistor and the capacitor, and an output connected to a node between the third resistor and the fourth resistor. The diode is connected between the non-inverting input and the output. The inverting input of the first comparator provides triangular wave signals to a second comparator by which PWM signals are generated.

REFERENCES:
patent: 4517534 (1985-05-01), Smith
patent: 4628475 (1986-12-01), Azusawa et al.
patent: 4746820 (1988-05-01), Fey
patent: 5315260 (1994-05-01), Link et al.

Affiliated with

Also associated with

Rating

Pulse width modulation generating circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pulse width modulation generating circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pulse width modulation generating circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3915634