madbeanpedals::forum

Projects => Tech Help - Projects Page => Topic started by: mcallisterra on December 11, 2014, 09:04:04 PM

Title: ID this resistor for me please
Post by: mcallisterra on December 11, 2014, 09:04:04 PM
I usually check resistor values with this one site where you just punch in the colors and it tells you the value, because I'm not good at remembering all the codes. Anyway this one resistor isn't coming up with what I expected, so I think I got sent the wrong one. I was wondering if you guys could tell me what it is? Thanks!

(http://tapatalk.imageshack.com/v2/14/12/11/9108ad9d0fbf6208e95ced69d93cd276.jpg)
Title: Re: ID this resistor for me please
Post by: m-Kresol on December 11, 2014, 09:10:57 PM
If it is BROWN-BLACK-BLUE-GOLD it should be 10M 5% tolerance. (Not sure whether the first ring is brown or red. If it's red it should be 20M)
No guarantee though

Do you have a multimeter? this would give you a definitive answer for sure.
Title: Re: ID this resistor for me please
Post by: mcallisterra on December 11, 2014, 09:24:21 PM
I don't have a multimeter no. That's why I was asking on here.

The first ring is brown so yes it's 10M. Which is annoying as it's supposed to be 3.9M!

Thanks for the quick help though!
Title: Re: ID this resistor for me please
Post by: televisiondown on December 11, 2014, 09:26:13 PM
Here's a guide I use. A multimeter is always good to double check.

http://www.bpesolutions.com/atechnical/resistorqv.pdf
Title: Re: ID this resistor for me please
Post by: m-Kresol on December 11, 2014, 09:27:42 PM
Bad to hear. that value is way of your ordered 3M9.
Fyi, 3M9 would be orange-white-green-gold

maybe someone here can send you some. Where are you from?
Title: Re: ID this resistor for me please
Post by: muddyfox on December 11, 2014, 09:31:29 PM

I don't even read codes anymore. DMM every single resistor I solder, keeps stupid 2AM mistakes to a minimum (at least the resistor based ones  ;D ).
Title: Re: ID this resistor for me please
Post by: mcallisterra on December 11, 2014, 09:35:53 PM
I'm in Florida. It was from Mammoth :-\
Title: Re: ID this resistor for me please
Post by: m-Kresol on December 11, 2014, 09:45:50 PM
Darn. maybe someone more local can help out. it doesn't make sense to ship one resistor from Europe :P


I guess a resistance value that high is most likely for a pull down resistor, right? I think (let someone confirm this) that you could substitute it for a 2M or similar, if you have it...
Title: Re: ID this resistor for me please
Post by: mcallisterra on December 11, 2014, 09:48:31 PM
Quote from: m-Kresol on December 11, 2014, 09:45:50 PM
Darn. maybe someone more local can help out. it doesn't make sense to ship one resistor from Europe :P


I guess a resistance value that high is most likely for a pull down resistor, right? I think (let someone confirm this) that you could substitute it for a 2M or similar, if you have it...

I haven't really built many pedals, so I don't have a backlog of parts. I just order what I need for each build. This is for a Nom Nom.
Title: Re: ID this resistor for me please
Post by: bcalla on December 11, 2014, 09:58:20 PM
I have lots of 3.9M resistors - 1% metal film.  PM me your address and how many you need & I'll get some in the mail tomorrow.
Title: Re: ID this resistor for me please
Post by: mcallisterra on December 11, 2014, 10:06:58 PM
Quote from: bcalla on December 11, 2014, 09:58:20 PM
I have lots of 3.9M resistors - 1% metal film.  PM me your address and how many you need & I'll get some in the mail tomorrow.

Awesome! Thanks so much!  :)
Title: Re: ID this resistor for me please
Post by: alanp on December 12, 2014, 01:57:01 AM
Quote from: mcallisterra on December 11, 2014, 09:24:21 PM
I don't have a multimeter no. That's why I was asking on here.

I strongly recommend you pick one up as soon as you can, if only for resistance and continuity checking.
Title: Re: ID this resistor for me please
Post by: mcallisterra on December 12, 2014, 01:58:21 AM
This post kind of made me realize that yea!