Retz Posted September 30, 2017 Report Share Posted September 30, 2017 What is the inverter in my M20k (252) giving power to? I'm in the middle of the rats nest phase of an avionics upgrade, and I'm trying to determine if it is still neededand cleaning up under the panel (read: the wire from the breaker is cut and I have no idea what is was plugged to). Thanks for for the help. Joe Quote Link to comment Share on other sites More sharing options...
LANCECASPER Posted September 30, 2017 Report Share Posted September 30, 2017 If its not currently wired to anything I would say you don't need it. Quote Link to comment Share on other sites More sharing options...
gsxrpilot Posted September 30, 2017 Report Share Posted September 30, 2017 I don't believe there one in my 252. Quote Link to comment Share on other sites More sharing options...
milotron Posted September 30, 2017 Report Share Posted September 30, 2017 An inverter is for converting DC to AC. Not likely an AC load in the plane unless some 400Hz equipment. Maybe 28V to 14V power converter? Either way it sounds redundant. Quote Link to comment Share on other sites More sharing options...
Piloto Posted September 30, 2017 Report Share Posted September 30, 2017 (edited) The 400Hz inverter provides power to the synchro in the gyro or remote compass for determining gyro/compass angular position. Synchros are very popular on large aircraft for determining angular position on gyros and control surfaces. Unlike household 60Hz AC large aircraft main AC bus is 400Hz. https://en.wikipedia.org/wiki/Synchro José Edited September 30, 2017 by Piloto Quote Link to comment Share on other sites More sharing options...
Retz Posted September 30, 2017 Author Report Share Posted September 30, 2017 24 minutes ago, Piloto said: The 400Hz inverter provides power to the synchro in the gyro or remote compass for determining gyro/compass angular position. Synchros are very popular on large aircraft for determining angular position on gyros and control surfaces. Unlike household 60Hz AC large aircraft main AC bus is 400Hz. https://en.wikipedia.org/wiki/Synchro José Thanks Jose, good answer. The wire was not cut but looks like it got pulled out when I was pulling out the power panel to get to the breakers. Does anyone have a picture of the inverter or where it is located, so I can wire it back up? Quote Link to comment Share on other sites More sharing options...
Aerodon Posted October 1, 2017 Report Share Posted October 1, 2017 Here's a link: http://www.aircraftspruce.com/search/search.php?s=inverter My money is on a 400hz inverter for a compass system, or for a power converter - up or down 14/28 or 28/14V. Don Quote Link to comment Share on other sites More sharing options...
Retz Posted November 23, 2017 Author Report Share Posted November 23, 2017 Any idea where the inverter is located on a M20K? Quote Link to comment Share on other sites More sharing options...
jlunseth Posted December 4, 2017 Report Share Posted December 4, 2017 I have an inverter in my 231 as I recall. I installed a 430AW several years ago. After we ordered the unit and it was being installed, the installer discovered the AW is 28 volt only (it has a more powerful transmitter than the 430W). We had to install an inverter to change the power from 12(14)V to 28. That's what I remember. You might look to see where the wire goes and what it is powering. Quote Link to comment Share on other sites More sharing options...
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