[NJARC] BC-348Q Power Questions(2 of them) PS

[Scott Roberts]

Input amps for the dynamotor was about 2.7


--- Scott Roberts <ng19delta at yahoo.com> wrote:

> Visit our web site - See http://www.njarc.org
> _______________________________________________
> Well, this should be easy...
> 
> I'm still repowering the BC-348Q, and in doing so,
> configuring it back, for the most part, to original.
> I
> have reconnected all the tube heaters as they were,
> and am finishing off the 24V side of the house. I am
> coming up with a question about power reduction...
> 
> When the aircraft power (24VDC) comes into the set,
> it
> goes through a fuse, and then to the AVC-Off-MVC
> switch, which also controls power to the set, by
> switching on and off the power to the Dynamotor.
> Also
> connected to the switch are the dial lamps: 2 No. 44
> bulbs(6.3V, .25A), connected in parallel to the
> dynamotor, and in series with each other and a 200
> ohm
> rheostat and 60 ohm resistor to ground.
> 
> My first question is, Since the dynamotor is
> removed,
> do I need to dissipate part of the power which
> operated it through a resistor to ground, in its
> place?  My thinking is, I have 24VAC going through 2
> x
> 6.3V (total 12.6 V) #44 bulbs, and a rheostat and
> resistor, and I don't want to cook any of them. I
> was
> wondering if  the current not used by the removed
> dynamotor would be a problem, or not, and if putting
> a
> resistor to ground in its place would alleviate any
> such symptom.
> 
> My second question is related to line current. When
> I
> received the set, it had a 110AC 3 wire plug in
> place.
> I wish to reuse this same wire & plug. But my wonder
> is this- I have the 24VAC grounding at points, and
> the
> 250VDC I'm sure grounds over somewhere, so is it ok
> to
> ground the chassis itself with the third wire? I'm
> pretty sure the other internal groundings are fine,
> but I wondered about the ground wire on the plug- I
> don't want a hot chassis...
> 
> 
> Thanks!
> Scott
> 
> __________________________________________________
> Do You Yahoo!?
> Tired of spam?  Yahoo! Mail has the best spam
> protection around 
> http://mail.yahoo.com 
> _______________________________________________
> NJARC mailing list
> NJARC at mailman.qth.net
> http://mailman.qth.net/mailman/listinfo/njarc
> 


__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com