[DeTomaso] Electrical questions--HELP!

SOBill at aol.com SOBill at aol.com
Mon Apr 30 01:48:59 EDT 2007


Think of it like this:
 
All of the vehicle loads are connected directly to the  alternator.
 
The alternator is connected to the battery thru the  ammeter.
 
All the current flowing from the alternator thru the ammeter, when  the 
ammeter reads plus, goes into the battery.
 
A new load, like a fan, is connected from the  battery positive terminal to 
the chassis.
 
When the alternator output voltage is greater than the battery  voltage the 
alternator charges the battery AND supplies current to the new load.  This 
current flows from the alternator thru the ammeter in the plus  direction. The 
ammeter reads the charging current into the battery plus the  current into the 
new load.
 
Conversely, when the alternator current is less than the battery  voltage, 
the ammeter does not indicate that current is flowing from the battery  into the 
new load, which is connected directly to the battery, because the  current 
into the new load comes directly from the battery and does not flow thru  the 
ammeter.
 
All vehicle loads should be connected to the alternator side of the  ammeter. 
When connected this way, the alternator will supply all the load  current 
independent of the ammeter and the ammeter solely indicates current  flowing into 
or out of the battery.
 
SOBill  Taylor
sobill at aol.com



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