Dual-adjustment balance circuit for operational amplifiers

Details Dual-adjustment balance circuit for operational amplifiers Dual-adjustment balance circuit for operational amplifiers

1978-03-02

1980-06-10

Mullins, James B.

Amplifiers

Sum and difference amplifiers

330261, H03F 345

Patent

active

042075360

ABSTRACT:
A method and circuit for balancing the offset voltage of an operational amplifier having an input resistor connected to an inverting input, and a feedback resistor connected to and between the inverting input and the amplifier output. The circuit is made up of an adjustable voltage divider network connected to the positive and negative power supplies of the amplifier and includes coarse and fine potentiometers for applying a first adjustable voltage to the inverting input to set the inverting voltage to zero, and a third potentiometer for applying a second adjustable voltage to the non-inverting input to set the amplifier output voltage to zero. The resulting offset voltage balance is generally insensitive to changes in values of the input resistor and the feedback resistor.

REFERENCES:
patent: 3304513 (1967-02-01), Offner
patent: 3696304 (1972-10-01), Fricke, Jr.
patent: 4023046 (1977-05-01), Renirie
patent: 4037170 (1977-07-01), Richards

Affiliated with

Also associated with

Rating

Dual-adjustment balance circuit for operational amplifiers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dual-adjustment balance circuit for operational amplifiers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual-adjustment balance circuit for operational amplifiers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-865467