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cea-six
Joined: Dec 08, 2010 Posts: 7 Location: 210
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Posted: Wed Feb 23, 2011 11:34 pm Post subject:
can i use 1% instead of 5% resistors |
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i made a mistake and soldered in 1% instead of the 5% for 1M, 100k 10k about 22 resistors on the mini synth. can i just go ahead and leave those in and use them or am i gonna have to solder them out again and use the 5%. thanks in advance , el |
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sndbyte
Joined: Jun 26, 2009 Posts: 119 Location: sf
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Posted: Wed Feb 23, 2011 11:58 pm Post subject:
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Yes, they are ok. I used 1% resistors in my Soundlab. |
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loydb
Joined: Feb 04, 2010 Posts: 393 Location: Providence, RI
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Captain Biscuits
Joined: Jun 11, 2010 Posts: 116 Location: Northampton, UK
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Posted: Fri Feb 25, 2011 3:52 am Post subject:
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The only difference is that 1% resistors should be closer to their stated value. A 100K resistor at 1% should be between 99K & 101K. A 100K resistor at 5% might be as low as 95K or as high as 105K.
If a circuit specifies 1% resistors it means the value is critical. If it specifies 5% the value is much less critical and "thereabouts" will do fine. Of course if thereabouts is fine spot-on is fine too. Using 5% when the circuit specifies 1% is where you can have problems - if you are using a resistor as low as 95K when the circuit needs the value to be closer to 100K.
There's no reason to buy 5% resistors except for price and if you're buying by the 100 they tend to be cheap enough to just buy 1% all the time. |
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ashleym
Joined: Aug 20, 2009 Posts: 181 Location: uk
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Posted: Fri Feb 25, 2011 3:53 am Post subject:
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If you didnt know the % refers to the accuracy of the resistor value. A 5% 100 ohm resister can be anything in the range of 95 to 105 ohms, +/-5%. The 1% have a tighter tolerance, the range should be 99 to 101 ohms or +/-1%.
Hopefully the 1%'ers will match the circuit values but I sure there are cases where a series of, for example, 95, 95, 95 & 95 ohm resistors work but 105, 105, 105 & 105s wont!!
When you really get going you can worry about the resistor type. Will you use carbon or metal film types? Much as people choose ceramic or film caps. Which type of component for the signal path or power/regulation? Some people will say it makes no difference but other will disagree. Look at MacBeth Studio Systems
http://www.macbethstudiosystems.com/
Quote: | The design philosophy is the the same throughout all my products- to provide the vintage analogue
soundusing as many parts still available now from that golden age. From an engineering point of view,
this is not neccesarily the cheapest way to manufacture these days- but sonically, I think that it is worth it.
I am using thru-hole components- half watt carbon resistors, ceramic and mylar capacitors and where ever
possible I'm using all transistor circuit equivalents to the opamp or opamp/transistor based circuits. So
there is no surface mount parts used within these designs...
...they certainly give a fat sound like this: |
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cea-six
Joined: Dec 08, 2010 Posts: 7 Location: 210
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Posted: Tue Mar 08, 2011 9:56 pm Post subject:
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thats again guys for all ur help |
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