Switch Failure

[Ron Lockhart]

Ive been using unregulated 5 cell nicads for
years, with Airtronics PCM and FM receivers.
Last couple of years, for switch, battery, and
plug redundancy, I started using two 600mah 5 
cell nicads.  Each through it's own switch, to 
a different socket in the receiver.

Ron Lockhart

----- Original Message -----
From: wgalligan <wgalligan at cnbcom.net>
Date: Monday, March 24, 2003 11:06 am

> I had an unfourtunate mishap yesterday and lost my Prophecy.  Come 
> to find my redundant or failsafe switch failed on me.  I was using 
> a MCI Miracle swith that has a regulator on it and has mechanical 
> fail safe if switch breaks down the system is on till the battery 
> is unplugged. I found out when testing the battery to make sure I 
> had juice.   Through the battery lead I had 6.5v and at the charge 
> plug I had 6.5 but when tested through the receiver end of the 
> switch I had only 4.2v.  Below the recivers voltage threshold.  
> Went into pcm lock up and throttled down and into a slow spiral 
> death.  At least the throttle came down by pcm failsafe.  SO it 
> appears the regulator side of this switch went bad.  SO Much for 
> failsafe.  Has anyone heard of such failure on these types of 
> switches?  And is it really neccesary to voltage regulate a 6volt 
> system.  I know when peak charged the pack is at 7 volts on an 
> expanded meter.   I have recently gone to 1500mil 4 cell pack on 
> my new plane t!
> o elimina
> 
> Wayne
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