---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Tue 11/05/24: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 0. 12:54 AM - Coming Soon - The List of Contributors - Please Make A Contribution Today! (Matt Dralle) 1. 02:46 PM - Brown Out Bus Functionality (Shaun Ellis) 2. 05:14 PM - Re: Brown Out Bus Functionality (Charlie England) 3. 05:36 PM - Re: Brown Out Bus Functionality (David Carter) ________________________________ Message 0 _____________________________________ Time: 12:54:35 AM PST US From: Matt Dralle Subject: AeroElectric-List: Coming Soon - The List of Contributors - Please Make A Contribution Today! Each year at the end of the List Fund Raiser, I post a message acknowledging everyone that so generously made a Contribution to support the Lists. Its my way of publicly thanking everyone that took a minute to show their appreciation for the Lists. Please take a moment and assure that your name is on that List of Contributors (LOC)! As a number of members have pointed out over the years, the List seems at least as valuable a building / entertainment tool as your typical magazine subscription! Assure that your name is on this year's LOC! Show others that you appreciate the Lists. Making a Contribution to support the Lists is fast and easy using your Credit card or Paypal on the Secure Web Site: https://matronics.com/contribution or by dropping a personal check in the mail to: Matt Dralle / Matronics 581 Jeannie Way Livermore CA 94550 I would like to thank everyone that has so generously made a Contribution thus far in this year's List Fund Raiser! Remember that its YOUR support that keeps these Lists going and improving! Don't forget to include a little comment about how the Lists have helped you! Best regards, Matt Dralle Matronics Email List Administrator RV-4/RV-6/RV-8 Builder/Rebuilder/Pilot ________________________________ Message 1 _____________________________________ Time: 02:46:56 PM PST US From: Shaun Ellis Subject: AeroElectric-List: Brown Out Bus Functionality Im new to the list (and aircraft wiring) so forgive me if this is redundant or should be self-explanatory, but, can someone explain or point me towards info regarding how the brown out bus actually prevents brown out of the equipment during engine starts? Ive been trying to understand Z101 and I cant figure out what prevents the voltage drop of the BO bus during starts. Thanks! ________________________________ Message 2 _____________________________________ Time: 05:14:21 PM PST US From: Charlie England Subject: Re: AeroElectric-List: Brown Out Bus Functionality On Tue, Nov 5, 2024 at 6:39=AFPM Shaun Ellis wrote: > shaunwellis@gmail.com> > > I=99m new to the list (and aircraft wiring) so forgive me if this i s > redundant or should be self-explanatory, but, can someone explain or poin t > me towards info regarding how the brown out bus actually prevents brown o ut > of the equipment during engine starts? I=99ve been trying to unders tand Z101 > and I can=99t figure out what prevents the voltage drop of the BO b us during > starts. Thanks! > Hi Shaun; welcome aboard! The secret sauce in the brownout bus circuit is the stuff in green (if you're looking at it on a computer or a color print) labeled 'brownout booster'. It's simply a solid state inverter style 'boost converter-regulator', that takes a DC voltage from the heavily loaded battery, chops it up into sorta-AC, runs it through what amounts to a transformer to raise the voltage, and converts it back to DC. The devices typically control output voltage (regulate it) by varying the 'duty cycle' of the sorta-AC. The gadget gets switched in/out of the system by the associated relay & switch terminals. It's been a while since I've needed to pay attention to that Z figure, so I can't remember the part/model number of the converter, but it should be in the docs somewhere. Also, there are many devices available from the usual online ordering sources that will do the same job. Hope that helps, Charlie Virus-free.www.avast.com <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> ________________________________ Message 3 _____________________________________ Time: 05:36:35 PM PST US From: David Carter Subject: Re: AeroElectric-List: Brown Out Bus Functionality I used the 8-amp version of this device ( https://www.tcwtech.com/product/intelligent-power-stabilizer/) to provide this capability to most of my brownout-critical devices, plus the Garmin GAD 27's keep-alive function to provide brownout protection to one additional device (my MFD) that would have otherwise been over the TCW's 8A rating. --- David Carter david@carter.net On Tue, Nov 5, 2024 at 8:15=AFPM Charlie England wrote: > > > On Tue, Nov 5, 2024 at 6:39=AFPM Shaun Ellis wrote: > >> shaunwellis@gmail.com> >> >> I=99m new to the list (and aircraft wiring) so forgive me if this is >> redundant or should be self-explanatory, but, can someone explain or poi nt >> me towards info regarding how the brown out bus actually prevents brown out >> of the equipment during engine starts? I=99ve been trying to under stand Z101 >> and I can=99t figure out what prevents the voltage drop of the BO bus during >> starts. Thanks! >> > Hi Shaun; welcome aboard! > > The secret sauce in the brownout bus circuit is the stuff in green (if > you're looking at it on a computer or a color print) labeled 'brownout > booster'. It's simply a solid state inverter style 'boost > converter-regulator', that takes a DC voltage from the heavily loaded > battery, chops it up into sorta-AC, runs it through what amounts to a > transformer to raise the voltage, and converts it back to DC. The devices > typically control output voltage (regulate it) by varying the 'duty cycle ' > of the sorta-AC. > > The gadget gets switched in/out of the system by the associated relay & > switch terminals. > > It's been a while since I've needed to pay attention to that Z figure, so > I can't remember the part/model number of the converter, but it should be > in the docs somewhere. Also, there are many devices available from the > usual online ordering sources that will do the same job. > > Hope that helps, > > Charlie > > > > Virus-free.www.avast.com > > <#m_9069903307299092257_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.