vinnichenzo
- Feb 17, 2012
- 1
- Joined
- Feb 17, 2012
- Messages
- 1
Hello,
I am a bit of an electronics novice but have a neat idea I want to try out:
I am using Lithium ion batteries for a portable stereo project i am working on and want to include nice old vintage car fuel gauges to indicate the remaining life of the battery (Full to empty etc.)
So i know that the fuel gauges work with car batteries and indicate the remaining fuel by the 12v input draining to zero as the float increases the resistance when the fuel tank empties.
So i need to try and replicate that drain, but on a span of 12.6v to 10v... (the lithium batteries life-span)
So the question is: How do i chance the range of 12.6v to 10v over to the desired 12v to 0v range?
I started research non-linear resistors and came across VDR (varistors), but couldnt find much information on the calculations and which type i would need to acheive my goal.
Does anyone here have an idea on the calculations needed or a good resource? or a better idea of how to change the range?
Any info would be muich appreciated. Thanks
I am a bit of an electronics novice but have a neat idea I want to try out:
I am using Lithium ion batteries for a portable stereo project i am working on and want to include nice old vintage car fuel gauges to indicate the remaining life of the battery (Full to empty etc.)
So i know that the fuel gauges work with car batteries and indicate the remaining fuel by the 12v input draining to zero as the float increases the resistance when the fuel tank empties.
So i need to try and replicate that drain, but on a span of 12.6v to 10v... (the lithium batteries life-span)
So the question is: How do i chance the range of 12.6v to 10v over to the desired 12v to 0v range?
I started research non-linear resistors and came across VDR (varistors), but couldnt find much information on the calculations and which type i would need to acheive my goal.
Does anyone here have an idea on the calculations needed or a good resource? or a better idea of how to change the range?
Any info would be muich appreciated. Thanks