Noah
Well Known Member
Anybody flying with one of these care to provide a review of the TCW Intelligent Power Stabilizer? http://tcwtech.com/IPS-12v.htm
Uses step-up DC/DC converter to provide sufficient voltage to EFIS / EM / GPS during engine startup when bus voltage can sag due to significant starter load.
From what I understand, modern avionics will not be damaged from low voltage if powered up during engine start, but this low voltage can cause a reboot so that you lose that flightplan you just entered prior to engine start. Its also a good idea to monitor oil pressure during engine start, which in my case will be on the engine monitor only.
The TCW solution seems like a lighter and simpler solution than a fully redundant bus or an aux battery, which incidentally, it looks like TCW recently added to their product line:
http://tcwtech.com/IBBS.htm
Since I have a lightweight permanent magnet starter, voltage sag will be significant, like <8V from what I have read - and that's with a healthy battery! AFS requires 10V minimum per their manual, and a GNS430W requires 10V (11V for com radio).
For people without an aux battery or redundant busses, do you just boot up all your avionics and enter flightplan info after engine start? Or is there some other reasonable workaround I haven't considered?
Uses step-up DC/DC converter to provide sufficient voltage to EFIS / EM / GPS during engine startup when bus voltage can sag due to significant starter load.
From what I understand, modern avionics will not be damaged from low voltage if powered up during engine start, but this low voltage can cause a reboot so that you lose that flightplan you just entered prior to engine start. Its also a good idea to monitor oil pressure during engine start, which in my case will be on the engine monitor only.
The TCW solution seems like a lighter and simpler solution than a fully redundant bus or an aux battery, which incidentally, it looks like TCW recently added to their product line:
http://tcwtech.com/IBBS.htm
Since I have a lightweight permanent magnet starter, voltage sag will be significant, like <8V from what I have read - and that's with a healthy battery! AFS requires 10V minimum per their manual, and a GNS430W requires 10V (11V for com radio).
For people without an aux battery or redundant busses, do you just boot up all your avionics and enter flightplan info after engine start? Or is there some other reasonable workaround I haven't considered?