ammeter fluctation

[bgreath]

I have recently installed a D180 in a Jabiru J400 with 6 cylinder Jabiru 3300 engine. With engine shut down the ammeter shows a steady discharge proportional to the amout of avionics switched on. With engine running the ammeter shows a fluctuating charge rate of anything between -5 and +20 amps even though the load is constant! I have measured the output across the shunt and this is a rock steady voltage, varying only with engine rpm.

Anyone help on this one please?

 

[annken100]

Has anybody resolved the fluctuating ammeter issue yet? My ammeter indication is rock solid until the alternator is online. With the alternator charging, the ammeter fluctuates between +10 and -7 amps. The actual current (verified by a handheld ammeter) is 4 amps.

Ken Pavlou

 

[PilotKris]

Looks like we've been left out in the cold since Dynon seams focused on autopilots and "NextGen"....

VERY disappointing

 

[annken100]

At the very least, can we find out if anyone tried the experiment with resistors and capacitors that Dynon mentions in the previous posts?  I know that a fluctuating ammeter is not the most critical thing in the world, but man, my eyes keep gravitating to the ammeter as it fluctuates.  It is annoying.


Ken Pavlou

 

[PilotKris]

I'm with you Ken.

Has anyone found a solution that dampens out the fluctuations inherent in Rotax/Jabaru alternator outputs so that the Dynon ammeter works?