ampage Tube Amps / Music Electronics	For current discussions, please visit Music Electronics Forum.

ampage archive

Vintage threads from the first ten years

previous: Nils Hi,I just got to sh... -- 4/17/2000 2:02 PM

Re: Beginner's error

4/17/2000 3:08 PM
Bruce	Re: Beginner's error Hence the reason I use 1% 10 ohm resistors. Even if they get off by 5% they are still 9.5ohms to 10.5 ohms and that is a very small error factor when compared to 1 ohm. If I read .35v (35ma) with the 10 ohm andit was 5% off, the actual current reading could be 33.25ma to 36.75ma. Since the 1% resistors are very seldom far off at all, the +or- 5% seems reasonable. Also when using small resistors, it doesn't take much heat to ruin their value by 10% to 15%. Carefull with the soldering iron Bruce

4/17/2000 3:08 PM

Bruce

Re: Beginner's error

Hence the reason I use 1% 10 ohm resistors.

Even if they get off by 5% they are still 9.5ohms to 10.5 ohms and that is a very small error factor when compared to 1 ohm.
If I read .35v (35ma) with the 10 ohm andit was 5% off, the actual current reading could be 33.25ma to 36.75ma.
Since the 1% resistors are very seldom far off at all, the +or- 5% seems reasonable.
Also when using small resistors, it doesn't take much heat to ruin their value by 10% to 15%.
Carefull with the soldering iron
Bruce

Replies:

Rick Erickson Q{Hence the reason I use 1% 10 ohm ... -- 4/18/2000 6:59 AM