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Diodes

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Ken

Joined: 06 Jun 2008
Posts: 15

Posted: Sun Nov 09, 2008 6:06 pm Post subject: Diodes

I have an electric primer valve.  Do I need to put a diode across it to protect the system from the induced voltage spikes?  Also I am  using a Sky-Tec starter on a Lycoming O-235.  As you know they can be used in either mode.  You can use the electric solenoid on the starter or you can leave it jumpered and use a solenoid on the firewall.  I'm going the firewall solenoid route so that the starter cable is only carrying voltage while cranking.  Do I need to put a diode on the starter or just on the firewall solenoid or both?



Thanks in advance

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SABorns(at)aol.com
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Posted: Sun Nov 09, 2008 7:42 pm Post subject: Diodes

Check out Aircraft Spruce item 11-05727. This is the Transorb used by MGL  electronics to protect the avionics bus from transient voltages. You might also  put diodes across the coils of your master and starter solenoid (cathode (banded  end) to +, anode to ground).  For more information on spike protection  google

 "Transorb".

  

 Steven  Bornstein

475 E. North Broadway

Columbus, Ohio 43214

614 263-5819   

  In a message dated 11/9/2008 9:07:24 P.M. Eastern Standard Time,  hror1(at)pld.com writes:

  	  Quote: 	
		  -->    Zenith-List message posted by: "Ken" <hror1(at)pld.com>



I have an    electric primer valve.  Do I need to put a diode across it to protect the    system from the induced voltage spikes?  Also I am  using a Sky-Tec    starter on a Lycoming O-235.  As you know they can be used in either    mode.  You can use the electric solenoid on the starter or you can leave    it jumpered and use a solenoid on the firewall.  I'm going the firewall    solenoid route so that the starter cable is only carrying voltage while    cranking.  Do I need to put a diode on the starter or just on the    firewall solenoid or both?



Thanks in advance





Read    this topic online    here:



http://forums.matronics.com/viewtopic.php?p=213187#213187

	






AOL Search: Your one stop for directions, recipes and all other H1200798498/aol?redir=http://searchblog.aol.com/2008/11/04/happy-holidays-from-aol-search/?ncid=emlcntussear00000001 ">Search Now.

  [quote][b]

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Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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SABorns(at)aol.com
Guest

Posted: Sun Nov 09, 2008 8:06 pm Post subject: Diodes

Just did some checking on part numbers. MGL and Aircraft Spruce get $6.00  for a transorb. You can obtain the same part from Mouser Electronics for less  than a dollar. Search P/N 1.5KE33 or IN6284A.

  

 Steven  Bornstein

475 E. North Broadway

Columbus, Ohio 43214

614 263-5819   

  In a message dated 11/9/2008 9:07:24 P.M. Eastern Standard Time,  hror1(at)pld.com writes:

  	  Quote: 	
		  -->    Zenith-List message posted by: "Ken" <hror1(at)pld.com>



I have an    electric primer valve.  Do I need to put a diode across it to protect the    system from the induced voltage spikes?  Also I am  using a Sky-Tec    starter on a Lycoming O-235.  As you know they can be used in either    mode.  You can use the electric solenoid on the starter or you can leave    it jumpered and use a solenoid on the firewall.  I'm going the firewall    solenoid route so that the starter cable is only carrying voltage while    cranking.  Do I need to put a diode on the starter or just on the    firewall solenoid or both?



Thanks in advance





Read    this topic online    here:



http://forums.matronics.com/viewtopic.php?p=213187#213187

	






AOL Search: Your one stop for directions, recipes and all other H1200798498/aol?redir=http://searchblog.aol.com/2008/11/04/happy-holidays-from-aol-search/?ncid=emlcntussear00000001 ">Search Now.

  [quote][b]

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