Results 1 to 13 of 30
Thread: VOLTAGE/RESISTANCE
-
03-28-2009, 11:10 PM #1
Member
- Join Date
- Feb 2009
- Location
- north of 49
- Posts
- 233
VOLTAGE/RESISTANCE
Does anyone have a formula for voltage drop in relation to an increase in resistance? Some quick and dirty guide for simplifying field applications.
thanks
tl
-
03-28-2009, 11:24 PM #2
Regular Guest
- Join Date
- Jul 2006
- Posts
- 528
Other than "OHMS LAW". ?
-
03-29-2009, 07:57 AM #3
Global Moderator
- Join Date
- Jan 2004
- Location
- Lancaster PA
- Posts
- 62,152
UGLY's guide.
-
03-29-2009, 11:54 AM #4
Professional Member*
- Join Date
- Aug 2003
- Location
- Fort Worth, TX
- Posts
- 10,421
If you have an iPhone or iPod Touch, get the app eformulas from the iTunes App Store.
"In this house we obey the laws of thermodynamics!"
- Homer Simpson
-
03-29-2009, 12:19 PM #5
Regular Guest
- Join Date
- Nov 2008
- Posts
- 1,656
E= IZ, I = E/Z, Z=E/I.
?
-
03-29-2009, 12:28 PM #6
Banned
- Join Date
- Dec 2006
- Location
- Middle Tennessee
- Posts
- 11,347
*
but seriously, a guy i used to work with thought it was called holmes law
.
-
03-29-2009, 12:56 PM #7
Regular Guest
- Join Date
- Nov 2008
- Posts
- 1,656
http://en.wikipedia.org/wiki/John_Holmes_(actor)
Originally Posted by Airmechanical
but seriously, a guy i used to work with thought it was called holmes law
.
Yes, it's not widely known, but the gentleman above did a lot of work in science (mostly hydraulics and fluid pressures).
-
03-29-2009, 01:57 PM #8
Regular Guest
- Join Date
- Feb 2007
- Posts
- 997
Only an engineer would know that. Originally Posted by WhoIsThat?
-
03-29-2009, 01:59 PM #9
Regular Guest
- Join Date
- Dec 2008
- Location
- Ontario Canada-in the Banana Belt!!
- Posts
- 211
LOL Got that without having to use go see the link....I must be an 80's boy Originally Posted by WhoIsThat?
-
03-29-2009, 02:07 PM #10
Professional Member
- Join Date
- Feb 2003
- Location
- pittsburgh,pa
- Posts
- 727
r=resistance z = impedance Originally Posted by WhoIsThat?
"Can't see it from my house"
-
03-29-2009, 03:38 PM #11
Member
- Join Date
- Feb 2009
- Location
- north of 49
- Posts
- 233
It's good to know there are still people out there who can think and are smart.
Thanks for the advise.
So......
Can I get an answer:
Voltage in 115
Resistance of the coil 32ohms
Voltage out?
thanx
tl
-
03-29-2009, 04:27 PM #12
Global Moderator
- Join Date
- Jan 2004
- Location
- Lancaster PA
- Posts
- 62,152
Under load, .12 volts.
-
03-29-2009, 06:02 PM #13
Regular Guest
- Join Date
- Apr 2001
- Location
- Asheville, NC
- Posts
- 23
"Voltage in 115
Resistance of the coil 32ohms"
Not sure what you are asking. Is the coil in parallel with the voltage or in series with a load? Is the voltage AC or DC? If the voltage is AC then you need to know the inductance of the coil and frequency of the voltage in order to calculate the inductive reactance of the coil (Xl =2 * PI * f * L). If it is in series (AC or DC) and you want to know the voltage drop you need to know the current drawn by the load. Voltage drop: E=IR (dc) or E=IX (ac).
