resistance - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 28th May 2007, 12:00 AM   #1
impsick is offline impsick  United States
diyAudio Member
 
impsick's Avatar
 
Join Date: Dec 2006
Location: Huntington Beach, Ca
Default resistance

sorry for the stupid question but i have a feeling even after i get an explanation it will still baffle me. but at the same time might explain alot to why things are done and how like biasing and stuff to me.

ok i understand that if you take 2 resisters of the same rsistance and ruin them side by side, parallel, you get a resistance of half the one resister. example say 1.6k + 1.6k would equal 800ohm. i mean thats a given.

what gets me is sasy you take that 1.6k with a 100ohm you would get a resistance of 100ohm. why? ok yeah the electrons like the shortest fastest rout but why?

or is my meter just a piece?
__________________
"Nothing happens for a reason. There are just reasons why things happen." Quote me on that. http://stores.ebay.com/AudioGrade?_rdc=1
  Reply With Quote
Old 28th May 2007, 12:04 AM   #2
diyAudio Member
 
Join Date: Mar 2007
Location: Canandaigua, NY USA
Actually you should get about 94 ohms, the product over the sum. A good DVM will resolve way better than this, but an inexpensive or analog meter might not.
  Reply With Quote
Old 28th May 2007, 12:07 AM   #3
impsick is offline impsick  United States
diyAudio Member
 
impsick's Avatar
 
Join Date: Dec 2006
Location: Huntington Beach, Ca
sorry that is what i get 94 ohms. what do you mean product over sum?
__________________
"Nothing happens for a reason. There are just reasons why things happen." Quote me on that. http://stores.ebay.com/AudioGrade?_rdc=1
  Reply With Quote
Old 28th May 2007, 12:16 AM   #4
sandyK is offline sandyK  Australia
diyAudio Member
 
Join Date: Apr 2007
Location: Sydney
Default Solid State > resistance

You multiply the 2 resistor values, then divide by the added values of the 2 resistors. e.g. If you parallel 1Kohm and 10Kohm,
you get 10Kohm DIVIDED by 10,000+1,000(11,000)
The result is 909 ohms
SandyK
  Reply With Quote
Old 28th May 2007, 02:05 AM   #5
CBS240 is offline CBS240  United States
diyAudio Member
 
CBS240's Avatar
 
Join Date: Aug 2005
Location: K-town
Also

Rt=((R1^-1+R2^-1+R3^-1...+Rn^-1)^-1)




__________________
All the trouble I've ever been in started out as fun......
  Reply With Quote
Old 28th May 2007, 05:39 AM   #6
impsick is offline impsick  United States
diyAudio Member
 
impsick's Avatar
 
Join Date: Dec 2006
Location: Huntington Beach, Ca
word. thanks guys. I got it now.
__________________
"Nothing happens for a reason. There are just reasons why things happen." Quote me on that. http://stores.ebay.com/AudioGrade?_rdc=1
  Reply With Quote
Old 28th May 2007, 06:01 AM   #7
Nordic is offline Nordic  South Africa
diyAudio Member
 
Nordic's Avatar
 
Join Date: Sep 2005
Jees !!!!!!!! Easy with the hard math....

for 2 resistors

(R1 x R2) / (R1 + R2)
  Reply With Quote
Old 28th May 2007, 04:41 PM   #8
diyAudio Member
 
myhrrhleine's Avatar
 
Join Date: Jan 2006
Location: Avalon Island
Default Re: resistance

Quote:
Originally posted by impsick
sorry for the stupid question but i have a feeling even after i get an explanation it will still baffle me. but at the same time might explain alot to why things are done and how like biasing and stuff to me.

ok i understand that if you take 2 resisters of the same rsistance and ruin them side by side, parallel, you get a resistance of half the one resister. example say 1.6k + 1.6k would equal 800ohm. i mean thats a given.

what gets me is sasy you take that 1.6k with a 100ohm you would get a resistance of 100ohm. why? ok yeah the electrons like the shortest fastest rout but why?

or is my meter just a piece?

Electricity does not follow the shortest path, or the path of least resistance, but rather all available paths according to their resistance.

a 1.6k resistor allows x current to flow.
Two 1.6k resistors will allow 2 times the current to flow, equol to one resistor of 1/2 the resistance or 800 ohms.

1.6k in parallel with 100 ohms would have the current of the 100 ohm plus the current of the 1.6k resistor, or about equal to one resistor of 94 ohms.

1/R + 1/R +1/R... =1/Total
__________________
Just because you can't hear it doesn't mean no one can.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
8 ohm L-pad total resistance sreten Multi-Way 14 21st November 2008 03:32 PM
Max. grid resistance stoo Tubes / Valves 7 5th August 2008 11:56 PM
4ohm Resistance icecoolwas Car Audio 7 26th May 2008 09:35 AM
ac resistance calculator switchmodepower Power Supplies 1 24th May 2008 02:15 PM


New To Site? Need Help?

All times are GMT. The time now is 01:32 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2