<VV> regulatored

[jvhroberts at aol.com]

 The internal regulator is a thick film hybrid circuit. Outside of the silicone encapsulation gel, there's not much to get burnt. Even the gel has a temperature rating in excess of 500F! And no electrolytics. The most thermally sensitive components are the transistors themselves, still a robust design. What kills these things are voltage spikes, fried diode trios, etc. 


 


John Roberts

 


 

-----Original Message-----
From: Tony Underwood <tony.underwood at cox.net>
To: virtualvairs at corvair.org
Sent: Sat, Sep 26, 2009 8:32 pm
Subject: Re: <VV> regulatored










At 05:44 PM 9/26/2009, J R Read_HML wrote:
>Bryan,
>
>I've heard is said (have no personal experience) that the internally
>regulated alternators do not stand up well to the heat in the Corvair engine
>compartment.  I have no idea whether or not there is a spec of truth to
>this.




Likely an old wives tale.  The majority of semiconductors used in 
simple circuitry like an alternator regulator are perfectly happy 
cooking right along at temps as high as 400 degrees or more without 
any problems.   Capacitors likely don't much care for temps over 300 
degrees if they're electrolytics but how often does anything in an 
engine bay get hot enough to flash-boil water unless something was on 
fire?    ;)   Besides, the caps in those regulators weren't usually 
electrolytics anyway.


Stick that internal reg alt in the 'Vair and head out.   No problems.



tony..   
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