[sdiy] Looking for a multimeter

[David G Dixon]

Hi John,

 

I have 1000s of 1% resistors in several values (499R, 10k, 30.1k, 100k), and
it is easy enough to sit in front of the TV and measure resistors on the
roll.  To find the 7 resistors I needed took just a few minutes while I was
watching something on TV.  In fact, my 7 resistors are within 0.033% (1 part
in 3000).

 

Cheers,

Dave

 

  _____  

From: john slee [mailto:indigoid at oldcorollas.org] 
Sent: Tuesday, January 21, 2020 3:33 AM
To: David G Dixon
Cc: Synth DIY
Subject: Re: [sdiy] Looking for a multimeter

 

so I was looking on Mouser and found (Mouser) part# 279-YR1B100KCC

 

100k 0.1% 15ppm/C 0.25W axial through-hole resistors: $0.451 each in
quantity >100

 

I think adding a reasonably nice meter to your bench is still worth it, but
on the other hand you've apparently been surviving just fine in DIY without
one...

 

John




 

On Tue, 21 Jan 2020 at 17:56, David G Dixon <dixon at mail.ubc.ca> wrote:

Thanks to all for your responses.  However, I ended up solving my problem.
I was making a 1V/oct switching ladder and decided to use 100k resistors.
Most of them were slightly less than that, and my meter was reading only
three digits.  I picked 7 resistors all 99.6k and built the ladder, and the
results were less than stellar.  So, I thought, maybe I'll use 10k
resistors, but then I was still only getting 3 digits.

Then I had the bright idea of trying 30k resistors.  These gave me four
digits, so I was able to find 7 resistors which were exactly 30.16k, and the
results were much better.  Now each voltage is within 1 or 2 mV of the
target.  I don't understand why it isn't more perfect, but I can live with
it.

So, long story short, I'm not gonna buy a new multimeter.



-----Original Message-----
From: Synth-diy [mailto:synth-diy-bounces at synth-diy.org] On Behalf Of David
G Dixon
Sent: Monday, January 20, 2020 4:14 PM
To: 'Synth DIY'
Subject: [sdiy] Looking for a multimeter

Hello SDIY Team,

I'm looking for a multimeter that, when reading a resistor just a bit less
than 10k, will give me a reading like:

9.972 k

Instead of the more common:

9.97 k

Also, I don't want to spend more than about $200 (I know I can get a Fluke
for $500, but this is freaking ridiculous and highway robbery -- I just want
one more digit than my $25 Victor 925A is giving me -- it doesn't need to
work underwater or survive nuclear holocaust).

Any suggestions?

Thanks in advance!
Dave Dixon

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