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 Forum index » DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
Wattage in resistors
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adhmzaiusz



Joined: Jan 17, 2008
Posts: 59
Location: toronto

PostPosted: Tue Jun 30, 2009 9:02 pm    Post subject: Wattage in resistors
Subject description: does it matter?
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I just placed an order with digikey and realized that some of my resistors are 1/6 watt and 1/2 watt... I really should have paid attention when I ordered... but it was so damn tedious!

Anyway, if I decide to use them will there be a signifigant change in behaviour or will it work properly? I suspect it should be fine but im still a nooby with the more technical side of electronics. If anyone can shed some light here! thanks!!
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cbm



Joined: Oct 25, 2005
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PostPosted: Tue Jun 30, 2009 10:08 pm    Post subject: Reply with quote  Mark this post and the followings unread

Unless you're dealing with fairly high power stuff, the wattage won't matter. There will probably be physical size issues, though, with the 1/2 watters.
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alder



Joined: Dec 31, 2008
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PostPosted: Tue Jun 30, 2009 10:25 pm    Post subject: Reply with quote  Mark this post and the followings unread

from http://www.musicfromouterspace.com/analogsynth/OLD_SOUNDLABMINISYNTH/soundlab.html
Resistor Substitution
Where resistor values are greater than or equal to 47K a 1/8-Watt resistor will work as well as 1/4-Watt. Use of 1/2-Watt resistors will probably require vertical mounting if they fit at all. Also as long as values are within 5% of the values specified below you can substitute resistors. And don't forget that you can put resistors in parallel or series to get a resistance value you don't have on hand. When 1% resistors are called for use metal film type. They improve temperature stability. You can use 5% carbon composition instead with less temperature stability. If you use the 1V/octave modification then 1% metal films are a good idea otherwise 5% carbon comps will work fine.
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adhmzaiusz



Joined: Jan 17, 2008
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Location: toronto

PostPosted: Tue Jun 30, 2009 10:41 pm    Post subject: Reply with quote  Mark this post and the followings unread

thank you gentlemen.... actually, these resistors aren't for SLMS but for arp odyssey cloning....

but I knew i'd get a good answer here if I posted anyway! thanks
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