What does it mean by Gain & Offset ? By rotating the screw of pot. of Gain & offset

[phatcreators]

What does it mean by Gain & Offset ? By rotating the screw of pot. of Gain & offset

What does it mean by Gain & Offset ? By rotating the screw of pot. of Gain & offset, What would happen ?

 

[jasonc2]

Re: What does it mean by Gain & Offset ? By rotating the screw of pot. of Gain & offs

Can you post the circuit/example you are referring to?

In general "gain" would refer to multiplication of a signal and "offset" would refer to addition to a signal, i.e. out = in * gain + offset, but it is not possible to be sure that is what you are referring to without seeing context.

 

[munzir]

Re: What does it mean by Gain & Offset ? By rotating the screw of pot. of Gain & offs

https://obrazki.elektroda.pl/23_1343296849.jpg
https://obrazki.elektroda.pl/23_1343296849.jpg
https://obrazki.elektroda.pl/40_1343296849.jpg
https://obrazki.elektroda.pl/4_1343296849.jpg

 

[phatcreators]

Re: What does it mean by Gain & Offset ? By rotating the screw of pot. of Gain & offs

why is it so ?

Difference in Gain & offset , anybody please ?

 

[godfreyl]

Re: What does it mean by Gain & Offset ? By rotating the screw of pot. of Gain & offs

See what Jason wrote in post 2.

 

[munzir]

Re: What does it mean by Gain & Offset ? By rotating the screw of pot. of Gain & offs

I posted the circuitry .... examples which he asked

 

[watermelon]

Re: What does it mean by Gain & Offset ? By rotating the screw of pot. of Gain & offs

Remember the simple mathematical equation of a straight line

y=mx+c

m is the gain and c is the offset.

You can refer to https://www.teacherschoice.com.au/maths_library/functions/y_=_mx_+_c.htm

In case of an audio amplifier circuit, m decides the amplification factor i.e. the volume control knob controls the gain. c decides that when the gain is zero, i.e. when the volume control knob is at zero, the amplifier still produces audible sound if offset is greater than zero.

In the case you are refering to, the gain is the signal amplification and offset is the signal at the output when gain is zero.

 

[munzir]

Re: What does it mean by Gain & Offset ? By rotating the screw of pot. of Gain & offs

why we need to set it thought these two factors ?