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Who make a good Voltage Regulator/Rectifier?

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jindoguy(at)gmail.com
Guest

Posted: Wed Jan 16, 2008 7:26 pm Post subject: Who make a good Voltage Regulator/Rectifier?

Carlos, put a 4,700uf 25V electrolytic capacitor in the positive line from the regulator to the battery and run the negative terminal to ground and your problems will probably go away. Also check that any extension cables for your headphones are grounded ONLY at the radio and not to the airframe (a ground loop). 



Rick Girard



do not archive



On Jan 16, 2008 8:25 PM, The BaronVonEvil <grageda(at)innw.net (grageda(at)innw.net)> wrote:

[quote] --> Kolb-List message posted by: "The BaronVonEvil" <grageda(at)innw.net (grageda(at)innw.net)>



Hi All,



I am currently operating a Rotax 503 DCDI with a Keywest regulator/ rectifier with a Powersonic 12volt, 18amp battery.  I seem to be getting allot of noise through the com radio from the engine. If I reduce the engine power, the radio noise goes away. The problem has aways been around but seems to be getting worse now. 



I have made sure I have good grounds, resistor spark plugs on the engine, and looked at all the electrical connections to make sure they are clean and secure.



I suspect the regulator is beginning to fail. It has about 56 hours on it since new. Is there a better voltage regulator/rectifier for the Rotax engine? 



Inquiring minds would like to know!



Thanks in Advance,

Carlos G





Read this topic online here:



  [quote][b]

Richard Pike

Joined: 09 Jan 2006
Posts: 1671
Location: Blountville, Tennessee

Posted: Wed Jan 16, 2008 7:34 pm Post subject: Who make a good Voltage Regulator/Rectifier?

One thing that is often overlooked are the wires to your kill switches. 

They are conducting AC from the engine to somewhere in your cockpit, in 

effect they are fairly long antennas radiating AC from your magneto to 

all over the place. You might try a simple experiment: Disconnect your 

kill switch wires at the engine, and figure out how to kill the engine 

with a switch or even a bare wire temporary rig at the engine. Tie the 

airplane to something secure, and run it up with the normal wires 

disconnected, and see if the noise in the radio is less. After the 

experiment is over, reach across the leading edge and kill the engine 

with your temporary kill device. This may not solve your problem, but it 

will eliminate one notable noise maker as the culprit. If it turns out 

that they are the culprit, here is how I fixed mine: Radio Shack sells 

shielded microphone wire, two wires with a sheath around them. That is 

what I used for the kill switches, and grounded one end of the 

shield/sheath to the engine.



Richard Pike

MKIII N420P (420ldPoops)



The BaronVonEvil wrote:

 	  Quote: 	
		   



 Hi All,



 I am currently operating a Rotax 503 DCDI with a Keywest regulator/ rectifier with a Powersonic 12volt, 18amp battery.  I seem to be getting allot of noise through the com radio from the engine. If I reduce the engine power, the radio noise goes away. The problem has aways been around but seems to be getting worse now.



 I have made sure I have good grounds, resistor spark plugs on the engine, and looked at all the electrical connections to make sure they are clean and secure.



 I suspect the regulator is beginning to fail. It has about 56 hours on it since new. Is there a better voltage regulator/rectifier for the Rotax engine?



 Inquiring minds would like to know!



 Thanks in Advance,

 Carlos G





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=158697#158697

_________________
Richard Pike
Kolb MKIII N420P (420ldPoops)
Kingsport, TN 3TN0

Forgiving is tough, being forgiven is wonderful, and God's grace really is amazing.

jindoguy(at)gmail.com
Guest

Posted: Wed Jan 16, 2008 7:35 pm Post subject: Who make a good Voltage Regulator/Rectifier?

Carlos, Shot the capacitor value off from memory. Should have said a 20,000uf 25Volt cap. Sorry.



Rick



an 16, 2008 9:24 PM, Richard Girard <jindoguy(at)gmail.com (jindoguy(at)gmail.com)> wrote: 

[quote]Carlos, put a 4,700uf 25V electrolytic capacitor in the positive line from the regulator to the battery and run the negative terminal to ground and your problems will probably go away. Also check that any extension cables for your headphones are grounded ONLY at the radio and not to the airframe (a ground loop). 



Rick Girard



do not archive

On Jan 16, 2008 8:25 PM, The BaronVonEvil <grageda(at)innw.net  (grageda(at)innw.net)> wrote:

[quote] --> Kolb-List message posted by: "The BaronVonEvil" <grageda(at)innw.net (grageda(at)innw.net)>



Hi All,



I am currently operating a Rotax 503 DCDI with a Keywest regulator/ rectifier with a Powersonic 12volt, 18amp battery.  I seem to be getting allot of noise through the com radio from the engine. If I reduce the engine power, the radio noise goes away. The problem has aways been around but seems to be getting worse now. 



I have made sure I have good grounds, resistor spark plugs on the engine, and looked at all the electrical connections to make sure they are clean and secure.



I suspect the regulator is beginning to fail. It has about 56 hours on it since new. Is there a better voltage regulator/rectifier for the Rotax engine? 



Inquiring minds would like to know!



Thanks in Advance,

Carlos G





Read this topic online here:



    



[b]

lcottrell

Joined: 29 May 2006
Posts: 1494
Location: Jordan Valley, Or

Posted: Wed Jan 16, 2008 8:20 pm Post subject: Who make a good Voltage Regulator/Rectifier?

[quote] ---

_________________
do not archive

HShack(at)aol.com
Guest

Posted: Wed Jan 16, 2008 9:19 pm Post subject: Who make a good Voltage Regulator/Rectifier?

Carlos, Radio Shack doesn't have anything close;  I had to order one  through an electronics  supply house.  Cost was about $30.

  

 Howard  Shackleford

FS II

SC   

  In a message dated 1/16/2008 11:21:00 P.M. Eastern Standard Time,  lcottrell(at)fmtcblue.com writes:

  	  Quote: 	
		     Carlos, Shot the capacitor value off from memory. Should have said a    20,000uf 25Volt cap. Sorry.



Rick



I don't suppose    that you would have a good idea of where to get one of these critters would    you?

   Larry  C

	






Start the year off right.  Easy ways to stay in shape in the new year. 

  [quote][b]

The BaronVonEvil

Joined: 23 Jun 2006
Posts: 76
Location: Walla Walla, WA.

Posted: Wed Jan 16, 2008 10:05 pm Post subject: Re: Who make a good Voltage Regulator/Rectifier?

Hi Guys,



Thanks for the input regarding my tale of woes. One would have thought that Keywest would have put such a device into their little blue box.



Where does one find a 20,000 u.f. 25v.d.c. capacitor? I looked a bit on-line and and most capacitors aren't nearly that high a value.



Mr Pike, I will definitely investigate the possibility that the noise is coming from the ignition kill wires as I have not thought of that. 



I suspect I will have to rearrange things in the wiring department aboard the plane. 



Oh well, its not like I had anything in particular to do during this blasted cold winter.  Any one have a cheap nuclear reactor to loan so I can keep my hangar warm?



Thanks again All,



Carlos G.

jbhart(at)onlyinternet.ne
Guest

Posted: Thu Jan 17, 2008 4:57 am Post subject: Who make a good Voltage Regulator/Rectifier?

At 10:05 PM 1/16/08 -0800, you wrote:

 	  Quote: 	
		  

Where does one find a 20,000 u.f. 25v.d.c. capacitor? I looked a bit on-line and and most capacitors aren't nearly that high a value.




	


Carlos,



Check:



http://www.newark.com/jsp/search/browse.jsp;jsessionid=KEGM5RFWMW3UMCXDUZ0G2WQ?N=1001309+184292+148380+182144&_requestid=4838



$9.31 plus shipping



Jack B. Hart FF004

Winchester, IN

Steve Boetto

Joined: 11 Jan 2006
Posts: 364

Posted: Thu Jan 17, 2008 5:08 am Post subject: Who make a good Voltage Regulator/Rectifier?

In a message dated 1/17/2008 7:58:30 A.M. Eastern Standard Time,  jbhart(at)onlyinternet.net writes:

  	  Quote: 	
		  Where    does one find a 20,000 u.f. 25v.d.c. capacitor? I looked a bit on-line and and    most capacitors aren't nearly that high a value 	
 Try www.skycraftsurplus.com

  

  	  Quote: 	
		  

    

   Steve    B

Firefly 007/Floats

do not  archive

	


Start the year off right.  Easy ways to stay in shape in the new year. 

  [quote][b]

rlaird

Joined: 10 Jan 2006
Posts: 373
Location: Houston

Posted: Thu Jan 17, 2008 5:37 am Post subject: Who make a good Voltage Regulator/Rectifier?

Also....    mouser.com



On 1/17/08, N27SB(at)aol.com <N27SB(at)aol.com> wrote:

 	  Quote: 	
		  



 In a message dated 1/17/2008 7:58:30 A.M. Eastern Standard Time,

 jbhart(at)onlyinternet.net writes:

 Where does one find a 20,000 u.f. 25v.d.c. capacitor? I looked a bit on-line

 and and most capacitors aren't nearly that high a value

 Try www.skycraftsurplus.com





 Steve B

 Firefly 007/Floats

 do not archive

 ________________________________

 Start the year off right. Easy ways to stay in shape in the new year.

_________________
~~~~~~~~~~~~~~~~~~~
Robert Laird
formerly: MkIIIc w/ 912ULS & Gyrobee
current: Autogyro Cavalon w/ 914ULS
Houston, TX area
http://www.Texas-Flyer.com

jindoguy(at)gmail.com
Guest

Posted: Thu Jan 17, 2008 7:06 am Post subject: Who make a good Voltage Regulator/Rectifier?

Carlos, B & C Specialties of Newton, KS has them. You should also be able to get them from Digikey or Mouser. Here's B & C's web address:



http://www.bandcspecialty.com/ 



Rick



PS when wiring this in you don't run the wires from the regulator to the positive pole of the cap then out from the negative pole. Your output to the battery is from the positive pole. The negative pole is wired to ground. What this does is provide an electrical leak to ground that filters out the noise. 



On Jan 17, 2008 12:05 AM, The BaronVonEvil <grageda(at)innw.net (grageda(at)innw.net)> wrote:

[quote] --> Kolb-List message posted by: "The BaronVonEvil" <grageda(at)innw.net (grageda(at)innw.net)>



Hi Guys,



Thanks for the input regarding my tale of woes. One would have thought that Keywest would have put such a device into their little blue box. 



Where does one find a 20,000 u.f. 25v.d.c. capacitor? I looked a bit on-line and and most capacitors aren't nearly that high a value.



Mr Pike, I will definitely investigate the possibility that the noise is coming from the ignition kill wires as I have not thought of that. 



I suspect I will have to rearrange things in the wiring department aboard the plane.



Oh well, its not like I had anything in particular to do during this blasted cold winter.  Any one have a cheap nuclear reactor to loan so I can keep my hangar warm? 



Thanks again All,



Carlos G.





Read this topic online here:



http://forums.matronics.com/viewtopic.php?p=158730#158730 

  [quote][b]

by0ung(at)brigham.net
Guest

Posted: Thu Jan 17, 2008 8:10 am Post subject: Who make a good Voltage Regulator/Rectifier?

One thing that is often overlooked are the wires to your kill switches. 

They are conducting AC from the engine to somewhere in your cockpit, in 

effect they are fairly long antennas radiating AC from your magneto to 

all over the place.

 	  Quote: 	
		  >>>>>>>>>>>>>>>>>>>>>>>>>>>>>


	




My kill switch wires are pieces of coax grounded at the engine... this helps

keep the noise in the hot wire shielded and out of the radio.

For a test of removing the wires,,, and you still need a way to kill the

engine without going through the prop.....   try turning off the gas at the

tank.  The engine will kill when the float bowls empty.



Boyd

biglar

Joined: 14 Jan 2006
Posts: 457

Posted: Thu Jan 17, 2008 6:10 pm Post subject: Who make a good Voltage Regulator/Rectifier?

Larry, try Mouser Electronics.                Lar.

 

 Larry Cottrell wrote: [quote]             

    	  Quote: 	
		       ----- Original Message ----- 

     From:     Richard Girard (jindoguy(at)gmail.com) 

     To:     kolb-list(at)matronics.com (kolb-list(at)matronics.com) 

     Sent: Wednesday, January 16, 2008 8:33 PM

     Subject: Re: Who make a good Voltage Regulator/Rectifier?

     

     

     Carlos, Shot the capacitor value off from memory. Should have said a 20,000uf 25Volt cap. Sorry.

     

 Rick

     

     I don't suppose that you would have a good idea of where to get one of these critters would you?

     Larry C

   



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 -- 

Larry Bourne

Santa Fe, NM

Building Kolb Mk III

"Vamoose"

www.gogittum.com

www.gogittum.com/blog[b]

_________________
Larry Bourne
Palm Springs, CA
Building Kolb Mk IIIC
"Vamoose"

R. Hankins

Joined: 18 Jan 2006
Posts: 185
Location: Grants Pass, Oregon

Posted: Thu Jan 17, 2008 11:41 pm Post subject: Re: Who make a good Voltage Regulator/Rectifier?

Carlos,

Check your plug caps.  If they have any wiggle at all they are making some noise. I changed mine out last year and noticed a dramatic drop in ignition noise.  If you decide to do it, don't by the $18 Rotax plug caps.  You can get the proper NGK LB05EZ caps from Sparkplugs.com for about 2.50 ea.  They are black not red, but otherwise identical to the Rotax OEM caps.

_________________
Roger in Oregon
1992 KXP 503 - N1782C

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