Volume control apparatus producing reduced noise and distortion

Details Volume control apparatus producing reduced noise and distortion Volume control apparatus producing reduced noise and distortion

1993-05-13

1994-11-15

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including gain control means

330149, 307542, 327310, 327551, H03G 330

Patent

active

053651952

ABSTRACT:
This invention provides a volume apparatus, which is formed of semiconductor resistors and semiconductor switches and which reduces distortion and noise in attenuation signals. The volume apparatus, which comprises: a first semiconductor voltage dividing circuit successively attenuating an input signal and outputting attenuated signals; a first semiconductor switch circuit controlling the supply of the attenuated signals output from the first semiconductor voltage dividing circuit; a phase inversion circuit for inverting the phase of the input signal; a second semiconductor voltage dividing circuit successively attenuating the input signal output from the phase inversion circuit and outputting attenuated signals; a second semiconductor switch circuit controlling the supply of the attenuated signals output from the second semiconductor voltage dividing circuit; a volume control circuit controlling the first and second semiconductor switch circuits according to a control signal; and a differential amplifier having one of input terminals thereof connected to the output of the first semiconductor switch circuit and the other connected to the output of the second semiconductor switch circuit.

REFERENCES:
patent: 4888496 (1989-12-01), Schmitz

Affiliated with

Also associated with

Rating

Volume control apparatus producing reduced noise and distortion does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Volume control apparatus producing reduced noise and distortion, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Volume control apparatus producing reduced noise and distortion will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1100342