Jimmy G Posted February 15, 2019 Report Share Posted February 15, 2019 I fly an RV-12 and am wondering if my voltage regulator is about to fail. I pulled the power back to idle while on final the other day and got a low voltage warning. Post flight review of engine data indicates a voltage around 12.3 volts and a current draw of about 6 amps. Today I ran the engine at 1940 and 3000 RPM and slowly powered everything up. With everything on at 1940 RPM voltage was 12.5 and current draw -1. At 3000 RPM I get 13.7 voltages and +1 amp.Seems normal. I then increased RPM to around 3500 RPM and quickly reduced power to idle, about 1800 RPM. I got a voltage reading of 12.1 volts and a current draw of -5 amps as read from my Dynon. I hadn't noticed the excessive current draw before. If I increase RPM the voltage increases and current shows +1 amp. RV-12 Voltage readings.xlsx Link to comment Share on other sites More sharing options...
Roger Lee Posted February 16, 2019 Report Share Posted February 16, 2019 Normal and especially so if you have all your lights and instruments on. The Dynon reads faster than the system can keep up. It won't hurt anything. Link to comment Share on other sites More sharing options...
Jimmy G Posted February 16, 2019 Author Report Share Posted February 16, 2019 Roger, thanks! I'll keep an eye on it, but stand down for the time being. Thanks again. Link to comment Share on other sites More sharing options...
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