Re: Another DIY voltage reference...
Yes, I agree that Maplin were essentially correct.
In his book "The Design of Active Crossovers", Doug Self discusses improving accuracy with multiple components:Gaussian Distribution in Section 12.2 (p342). He then goes on to say (p344) "You may object to putting four 1% resistors in series means that the worse case errors can be four times as great. This is obviously true - if all the components are 1% low, or 1% high, the total error will be 4%."
I really don't believe he meant this and suspect he was just checking to see if we were still awake !
Jerry
|