Pulse width modulation circuit

Details Pulse width modulation circuit Pulse width modulation circuit

1994-03-17

1995-09-19

Mullins, James B.

Amplifiers

Modulator-demodulator-type amplifier

330251, H03F 338

Patent

active

054519004

ABSTRACT:
To suppress electromagnetic radiation without exerting any harmful influence upon both S/N ratio and dynamic range, a pulse width modulation circuit includes an integrating circuit for integrating an input signal applied to an input terminal with respect to time, a comparing circuit connected to the integrating circuit and having hysteresis characteristics, a feedback circuit for feeding back the output of the comparing circuit to an input of the integrating circuit, and an amplitude modulation circuit, provided in a loop including the integrating circuit and the comparing circuit, for implementing amplitude modulation to modulate a frequency of the output of the comparing circuit. Further, the output of the comparing circuit can be fed-back to the integrating circuit via an amplitude modulation circuit. Alternatively, the amplitude of the output of the integrating circuit is first modulated by the amplitude modulation circuit, before being applied to the comparing circuit. A dither signal is applied to the amplitude modulation circuit or, alternatively, a signal for maintaining frequency of the pulse modulated signal may be applied.

REFERENCES:
patent: 4004246 (1977-01-01), Hamada
patent: 4293817 (1981-10-01), DeMichele
patent: 4531096 (1985-07-01), Yokoyama

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1830839