Basic component questions

Started by Hemmel, May 02, 2013, 03:44:43 PM

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Hemmel

Hi guys !

In many if not most of the pictures I see of DIY pedal gut-shots, I see green resistors like


I have err... brown ? tan ? orange ? like

Is there a reason why the green resistors are used more often ? Why don't I ever see the ones I have (or very rarely) ? Is it a matter of watts ?

Now about caps : in the gut-shots I see many caps that are "boxed" like these


I only have either electrolytic (cylinders) or plastic or ceramic. Will they do ? There's all at least 25V so I know it's not about voltage...

Finally : I'm seeking a good way to hold a PCB into a Hammond case. I don't want to use the pots because I'm scared my solders will not hold.
I thought of little plastic standoffs, like these

but I can't find any with a "flat top"!!!

EDIT : Ok I just found this thread : http://www.diystompboxes.com/smfforum/index.php?topic=102389.0

Thanks guys.
Marc
Bââââ.

artifus

resistors - metal film 1 or 2% tolerence versus carbon 5%

capacitors - polyester film box aka polybox

Kipper4

Those boxed capacitors are non polar too
Ma throats as dry as an overcooked kipper.


Smoke me a Kipper. I'll be back for breakfast.

Grey Paper.
http://www.aronnelson.com/DIYFiles/up/

Hemmel

Thanks for your answers, guys.

I guess my main question about capacitors is : Is there a benefit to using those boxed caps instead of my non-polarized film caps such as this one ?

Bââââ.

Keppy

No. The box caps ARE film caps.
"Electrons go where I tell them to go." - wavley

Kipper4

I cant hear a lot of differance between all the differant types of caps. but then thats just me.
Ma throats as dry as an overcooked kipper.


Smoke me a Kipper. I'll be back for breakfast.

Grey Paper.
http://www.aronnelson.com/DIYFiles/up/

Hemmel

Ok guys, thanks. I was just wondering since almost all gut-shots I see have those box caps, I thought maybe there was a benefit to using those over ordinary film caps.

BTW Kipper4, I'd rather say "Stoke me a clipper, I'll be back for Christmas".
Bââââ.

artifus

#7
Quote from: Kipper4 on May 03, 2013, 01:26:24 PM
I cant hear a lot of differance between all the differant types of caps. but then thats just me.

heresy!  :P

*edit* also, that's quite a pretty picture of resistors up there - ideas of a chain mail vest spring to mind. as does this cartoon: Nerd Sniping

defaced

Box caps are used alot because they're easy to work with.  The values we use tend to be consistent in size and lead pitch (the distance between the leads), so they're easy to work with.  Other caps tend to have varying sizes for each value/voltage which makes things like board layouts more problematic and less friendly for swapping out different values. 
-Mike

Hemmel

Quote from: defaced on May 03, 2013, 01:45:13 PM
Other caps tend to have varying sizes for each value/voltage which makes things like board layouts more problematic and less friendly for swapping out different values. 

You're right ! I've only done circuits on breadboards until now and I didn't notice any issues with size but I guess it becomes an issue as soon as PCBs or veros are used...
Thanks, defaced !
Bââââ.

alparent

As for the resistors......1% / 5% makes no differences. (Unless specified in the BOM, Bill Of Material) and even then!

If I have the value already, I use what I have. If I need to buy it, I get 1% if they have the value I need......if not, I get 5%

I get my resistors from Tayda....they don't have all the values in 1%.

And mixing different % and wattage (1/4w, 1/2w, etc) doesn't matter either. (But you probably already know that.)

Té dans quel boute de Mtl?

Kipper4

Ma throats as dry as an overcooked kipper.


Smoke me a Kipper. I'll be back for breakfast.

Grey Paper.
http://www.aronnelson.com/DIYFiles/up/

Hemmel

^ Rich : I don't have access to Youtube at work, but I'm guessing what this video's about  ;D

^ Alain : Verdun, proche de l'échangeur Turcot
Bââââ.

Kipper4

Ma throats as dry as an overcooked kipper.


Smoke me a Kipper. I'll be back for breakfast.

Grey Paper.
http://www.aronnelson.com/DIYFiles/up/

duck_arse

those green resistors pictured have a gold tolerance band. I seem to recall that style being hi-temp or flame retardant or ridiculously low values, or at the very least high quality german(?) manufactured.

isn't that *captain* a.j. rimmer, what a guy?
" I will say no more "

Kipper4

Was There a USA version of Red Dwarf too?
Ma throats as dry as an overcooked kipper.


Smoke me a Kipper. I'll be back for breakfast.

Grey Paper.
http://www.aronnelson.com/DIYFiles/up/

Hemmel

Quote from: Kipper4 on May 04, 2013, 01:54:02 PM
Was There a USA version of Red Dwarf too?

2 pilots were made, with Robert Llewellyn reprising his role as Kryten. Also, Jane Leeves played Holly (she's mostly known for her role as Daphne in Frasier).

In my opinion, both pilots were terrible, actors playing Lister Cat and Rimmer were subpar and I'm really not surprised the show wasn't picked up.

Pilot 1 : http://youtu.be/qIqkJSFLX5o
Pilot 2 : http://youtu.be/nfJsViD9SjM
Bââââ.

Govmnt_Lacky

Most 1% resistors that I have seen are BLUE.

Be careful that those "Green" ones are not small INDUCTORS  :icon_eek:
A Veteran is someone who, at one point in his or her life, wrote a blank check made payable to The United States of America
for an amount of 'up to and including my life.'

Arcane Analog

Some of the green ones I have seen are the high temp or flame resistant types - agreed with the blue ones generally being the 1% metal type.