- #1
rolls
- 52
- 0
I understand the basics but I am a bit lost on what happens in this example.
In a car we have an alternator that charges the battery, if the battery is charged to stop it overvolting the regulator essentially shorts power to ground via SCRs (correct me if I'm wrong but this is my understanding) to keep the volts at 13.8 v
Lets say you have zero electrical applicances in your car and it draws no current other than from the small losses of maintaining a battery at 13.8 v.
As the car's ground is floating and it has a very small capability to hold charge, does this mean that the cars floating ground will increase in voltage (relative to the Earth's ground) fairly quickly? Eg if I was to drive my car for 1000 years whilst drawing no current, would my cars 0v slowly rise to say 5000v relative to the actual earth, and the positive rail to 5013.8v ?
Or have I got this all wrong?
In a car we have an alternator that charges the battery, if the battery is charged to stop it overvolting the regulator essentially shorts power to ground via SCRs (correct me if I'm wrong but this is my understanding) to keep the volts at 13.8 v
Lets say you have zero electrical applicances in your car and it draws no current other than from the small losses of maintaining a battery at 13.8 v.
As the car's ground is floating and it has a very small capability to hold charge, does this mean that the cars floating ground will increase in voltage (relative to the Earth's ground) fairly quickly? Eg if I was to drive my car for 1000 years whilst drawing no current, would my cars 0v slowly rise to say 5000v relative to the actual earth, and the positive rail to 5013.8v ?
Or have I got this all wrong?