adafruit industries

Guest · Post by **Guest** » Sun Oct 09, 2005 8:58 pm

I just completed the power supply, and my multi meter only goes to two decimal places. I adjusted the power supply to 5.33 - Should that be good enough?

THanks!

pempelson · Post by **pempelson** » Mon Oct 10, 2005 5:57 am

nope

imho you should go and get a new meter...

sorry but i am of those who say that 5333 is essential

(first to work very exact, later in tuning you may tweek a bit)

greetings, Guido

BijouBittersolie · Post by **BijouBittersolie** » Mon Oct 10, 2005 1:56 pm

mine works fine at .33

brandon daniel · Post by **brandon daniel** » Mon Oct 10, 2005 3:38 pm

I tuned to 5.33, then 5.34, then back to 5.33, then up 1/3 of the way to where 5.34 was. That ought to get it pretty close, if you absolutely cannot get a hold of a meter with an extra digit.

Milkmansound · Post by **Milkmansound** » Mon Oct 10, 2005 8:26 pm

some people think a little play in the tuning is good!

5.33 should be fine

MJSemtex · Post by **MJSemtex** » Thu Oct 13, 2005 10:01 am

pempelson,

what model multimeter is that in your sig file?

to anyone, what's a good unit that's not going to let me down? pertaining to both functions and reliability?

thanks in advance.

pempelson · Post by **pempelson** » Thu Oct 13, 2005 8:08 pm

hi,

its a Fluke 112

http://us.fluke.com/usen/Home/Search.as ... 12&x=6&y=7

Fluke 112 virtual product demo- nice !

I bought it at "Bürklin" here in Düsseldorf since i decided to go for "one" good
multimeter in the next -hm... 20 years what is reliable and exact...

...i finally added a cheep 10 Euro one by Voltcraft (BANNED) to do some hFE compare charts
(pssssst.... dont tell around ! loool)

The 112 ist the first on this series with backlit display - a feature i never would forego to

MJSemtex · Post by **MJSemtex** » Thu Oct 13, 2005 8:57 pm

guido,

thanks for both responses...

MJSemtex · Post by **MJSemtex** » Thu Oct 13, 2005 9:12 pm

is that your workshop on the acidcode site?

if so, what kind of board vise is that? looks really sweet even compared to the nices panavise model i can find.

etaoin · Post by **etaoin** » Fri Oct 14, 2005 2:17 am

...i finally added a cheep 10 Euro one by Voltcraft (BANNED) to do some hFE compare charts
(pssssst.... dont tell around ! loool)

That's about the same as I paid for one at the local hardware store just to find the highest hFE among the lot. The displayed values were probably meaningless, but as a comparison was all that was necessary, who cares?

pempelson · Post by **pempelson** » Fri Oct 14, 2005 5:21 am

yes of cause. that´s exactly what i thought !

and the result:

the board vise is called

WELLER BESTUECKUNGSRAHMEN
Artikel-Nr.: 811394 - 62 (number refers to BANNED Electronic)

http://kaufen.BANNED.de/weller_bestueckungsrahmen.asp

greetings, Guido

yes, it´s my workshop, called "lötstelle" - heavily improvised between studio and office area

cheesy · Post by **cheesy** » Wed Mar 08, 2006 10:38 pm

I've completed my power supply and everything appears to work. I went to set the 5.333 voltage and since my multimeter(s) only have two decimal places I just got it as close to 5.333 as I could. BUT then I went to check it with my other multimeter and it was only 5.30V!

Should I trust my crappy $20 RadioShack one or my crappy $20 Velleman one?

I'll try to find a better one I can use.

asmodee · Post by **asmodee** » Wed Mar 08, 2006 11:54 pm

actually to get 5.333 if you only have a 5.33 readout would not be to turn it from 5.34 to 5.33 and then up 1/3rd.

Really the meter should read 5.33 when the voltage is between 5.325 and 5.335, so really you should make it read 5.34 and turn it down about a fifth