Also, in practice you'll be very lucky to find a resistor sold as 5% that is within 1% across temperature etc. - they're the ones that are being sold as 1% parts!
Regards, Andy Gulliver > -----Original Message----- > From: Gary Packman [mailto:[EMAIL PROTECTED]] > Sent: 02 July 2002 10:08 > To: Protel EDA Forum > Subject: Re: [PEDA] AW: SPICE sim question > > > Georg, > I'm not sure I understand your question. What I think you are asking is > how to predict the ratio of resistors that will make your bridge stay > within certain design parameters versus those that will not based upon a > random sample batch of parts. If this is what you're asking my advice > is to always purchase components that are within the limits of the > design, even if they cost more. Why? Because if you buy 100,000 5% > resistors with the expectation that a certain per cent will fall within > a 1% tolerance you might end up with 100,000 parts that won't work. > Plus, the cost of tolerance testing is generally prohibitive (unless you > live in China). > > Also, cheap components often drift with age. The more expensive high > tolerance parts don't drift as badly. > > If I misunderstood let me know and I'll take another stab at it. > [cut] ************************************************************************ * Tracking #: B9849B552B125A41B36E261676C47A7791583C05 * ************************************************************************ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/[email protected] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
