---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Mon 02/09/15: 6 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:23 AM - Re: Power Generation without Battery (user9253) 2. 08:48 AM - Re: Re: Power Generation without Battery (Robert L. Nuckolls, III) 3. 05:27 PM - Frequency problem update (danielj.billingsley@yahoo.com) 4. 06:39 PM - Re: Re: Power Generation without Battery (Richard Girard) 5. 06:40 PM - Re: Frequency problem update (Kelly McMullen) 6. 08:04 PM - Re: Power Generation without Battery (user9253) ________________________________ Message 1 _____________________________________ Time: 07:23:32 AM PST US Subject: AeroElectric-List: Re: Power Generation without Battery From: "user9253" I read about the SILENT-HEKTIK rectifier/regulator after Google translated the webpage to English. It seems that the SILENT-HEKTIK has the same mounting footprint as the Ducati and the electrical connector is also the same. So installation should be easy. The cooling fins look to be much higher to give better cooling. The SILENT-HEKTIK claims to be rated for 47 amps, which is more than twice the output of the Rotax dynamo. The voltage output of the SILENT-HEKTIK is 14.2 volts which is also higher than the Ducati 13.8 volts. Although the Ducati keeps my RV-12 battery charged just fine. Heat is the enemy of electronics. So the mounting location of the regulator is important. The fins should be exposed to moving air. The SILENT-HEKTIK is expensive, but would be worth it if it does not fail. I thought about cutting a rectangular hole in my RV-12 fuselage skin and mounting the Ducati regulator with the fins protruding through the hole. The slipstream should keep the regulator cool. But I am concerned with aesthetics. Joe -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=438183#438183 ________________________________ Message 2 _____________________________________ Time: 08:48:42 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Re: Power Generation without Battery >Heat is the enemy of electronics. So the mounting location of the >regulator is important. The fins should be exposed to moving air. >The SILENT-HEKTIK is expensive, but would be worth it if it does not fail. Yeah sorta . . . the early days of semiconductor products were pretty tense with respect to potential for heat damage. There was a time when we were cautioned to grip the leads of a transistor with needle nose while soldering the puppies in lest milliBTUs run up the leads and toast the critter. A couple years ago I was working with a supplier of electronic assemblies to the aviation industry. Don had just finished doing some mods to the board of a rather complex actuator. He decided to do a quick look-see for performance at hi temp. He put the beast into the chamber at 100C and said, "let's get some lunch." When we came back, he ran it through the paces and deemed the thing healthy for continued service. I was surprised at his assertion that (within limits) just about any modern piece of electronics ought to shrug off those kinds of temperatures. The limits being established by how well internal energy dissipations were managed. The point is that technology and processes are in existence at this time to fabricate PM alternator regulators that will live happily under the cowl which, by the way, is not all that mean an environment. Unless subjected to radiant heating from exhaust stacks while deprived of any circulation, temperatures under the cowl are subject only to transient spiking . . . like long taxi ops on a hot day . . . or hot soaking at the pumps after shutdown. Few items of avionics need forced air cooling any more. The newer MOSFET regulators run rather cool even at 20A . . . As far as we can tell, the Ducati product has not be materially updated in 20 years. The thrust of my studies in the near future will go to discovery of why and how B&C's product offers can be leveraged into the 21st century . . . Bob . . . ________________________________ Message 3 _____________________________________ Time: 05:27:10 PM PST US From: "danielj.billingsley@yahoo.com" Subject: AeroElectric-List: Frequency problem update A little over a week ago I mentioned I recently purchased a Bose headset that would not allow me to make a call to tower. I could talk to ground, yet , when I switched over to tower I got nothing but a loud high-pitched squeal. I wanted to give an up-date as I have the problem resolved. All it took was going to Radio Shack and purchased a couple ferrite beads. I snapped one on the coax behind my radio, started my engine and hit the PTT. It was almost gone but still a chirp here and there. I shut down and snapped the second one on the coax just in front of the antenna. Works perfect now. Hope this can help others with similar problems.Dan B ________________________________ Message 4 _____________________________________ Time: 06:39:38 PM PST US Subject: Re: AeroElectric-List: Re: Power Generation without Battery From: Richard Girard Joe, Have you looked at the aftermarket regulators for Harley Davidson motorcycles? They're available from Accel among others and the regulators for the baggers handle 32 amps. http://www.jpcycles.com/product/381-277 Rick Girard On Mon, Feb 9, 2015 at 9:21 AM, user9253 wrote: > > I read about the SILENT-HEKTIK rectifier/regulator after Google translated > the webpage to English. It seems that the SILENT-HEKTIK has the same > mounting footprint as the Ducati and the electrical connector is also the > same. So installation should be easy. The cooling fins look to be much > higher to give better cooling. The SILENT-HEKTIK claims to be rated for 47 > amps, which is more than twice the output of the Rotax dynamo. The voltage > output of the SILENT-HEKTIK is 14.2 volts which is also higher than the > Ducati 13.8 volts. Although the Ducati keeps my RV-12 battery charged just > fine. > Heat is the enemy of electronics. So the mounting location of the > regulator is important. The fins should be exposed to moving air. The > SILENT-HEKTIK is expensive, but would be worth it if it does not fail. > I thought about cutting a rectangular hole in my RV-12 fuselage skin and > mounting the Ducati regulator with the fins protruding through the hole. > The slipstream should keep the regulator cool. But I am concerned with > aesthetics. > Joe > > -------- > Joe Gores > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=438183#438183 > > -- Believe those who are seeking the truth, doubt those who find it. -Andre Gide ________________________________ Message 5 _____________________________________ Time: 06:40:41 PM PST US From: Kelly McMullen Subject: Re: AeroElectric-List: Frequency problem update Sounds like your antenna coax has compromised shielding, that allows RF leakage. Most likely the ferrite beads mask the problem. A new coax would likely give same result. On 2/9/2015 6:25 PM, danielj.billingsley@yahoo.com wrote: > A little over a week ago I mentioned I recently purchased a Bose > headset that would not allow me to make a call to tower. I could talk > to ground, yet , when I switched over to tower I got nothing but a > loud high-pitched squeal. I wanted to give an up-date as I have the > problem resolved. All it took was going to Radio Shack and purchased a > couple ferrite beads. I snapped one on the coax behind my radio, > started my engine and hit the PTT. It was almost gone but still a > chirp here and there. I shut down and snapped the second one on the > coax just in front of the antenna. Works perfect now. Hope this can > help others with similar problems. > Dan B > * > > > * ________________________________ Message 6 _____________________________________ Time: 08:04:14 PM PST US Subject: AeroElectric-List: Re: Power Generation without Battery From: "user9253" Rick, Thanks for the suggestion and link. Joe -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=438197#438197 ------------------------------------------------------------------------------------- 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.