DragonflyAero
Well Known Member
Where is the best place to measure voltage, or does it matter?
Thanks!
Thanks!
My Dynon EMS 120 reads the buss voltage about a half volt low, consistently. I have verified this several times with appropriate meters. It is no big deal, and I allow for it in my "tolerance" level.
Ron
Is there a voltage drop across the shunt? I hope NOT! there should not be more than .1 V drop per connection, .2 for battery terminals in any circuit.....
Yes there is - that's the point of the shunt, it's how they measure the amperage flowing across it - but it's a small voltage drop, at one millivolt per amp. If you are flowing 30 amps through the shunt, the voltage drop across it is .03 volts. For our purposes it really wouldn't matter which side of the shunt you used for a system voltage tap, but on mine I used the battery side of the shunt.