[sdiy] Re: Transistor Matching

[Ian Fritz]

At 07:37 PM 12/10/2002, Tim Ressel wrote:
>Yo,
>
>I dug up some 0.1% resistors. After adjusting the
>circuit to make up for the different values of the new
>resistors I got the offset down to about 12mV. Again,
>the method of determining the offset is to reverse the
>trannies under test and take the difference.

Or, again, measure all the units against one fixed one and pick pairs with 
the same measured offset.