[NJARC] 116X working & smoking!

[Martin Friedman]

Joe,
 Something sucked out of the vortex? I thought nothing can escape a black
hole. This could upset the balance of the universe.
Marty

-----Original Message-----
From: njarc-bounces at mailman.qth.net [mailto:njarc-bounces at mailman.qth.net]
On Behalf Of N3IBX
Sent: Thursday, January 17, 2013 6:04 PM
To: ark at ar88.net; njarc at mailman.qth.net
Subject: Re: [NJARC] 116X working & smoking!

Just remember
Reply = Poster
Reply All = Everyone

_________________________________________________________

Another new 10mfd at 450vdc capacitor gets sucked out of the VORTEX and on it's
way to Pauline Dr in Clearfield Pa......
I digress
N3IBX 

On 01/17/13, Al Klase wrote:

Just remember
Reply = Poster
Reply All = Everyone

_________________________________________________________
Steve,

The CT of the power xfmr secondary is the most negative end of the power
supply. In this case, it's actually "below ground." So positive end of that
cap goes to ground, and negative to the tap.

The other electrolytics, connected to the end of the choke, have their
negative ends grounded to chassis.

Hummm, my schematic has two #101's. So I'm not going to use that as a
reference.

This whole scheme is to provide negative bias to the audio amp grids. 
Don't feel too bad, it's an easy place to mess up.


Al


On 1/17/2013 2:35 PM, sgt88 at atlanticbb.net wrote:
> Just remember
> Reply = Poster
> Reply All = Everyone
>
> _________________________________________________________
> ...smoking in the REAL sense...
>
> I installed a new 10uf 450v electrolytic on the trans center tap to 
> ground.
>
> Checked it with an ohmmeter...got 1 Meg...seemed good to me.
>
> Was listening on BC band..."warming up" for the contest!
>
> After 1 minute, the top of the cap STREAMED smoke like a 
> volcano!!!...more like the beam radiation from Quasar!!!
>
> The previous one - rated only 160v - didn't pop...just smoked.
>
> The negative lead goes to ground.
>
> What the heck is going on?
>
> Steve T.
>
> ______________________________________________________________
> NJARC mailing list
> Home: http://mailman.qth.net/mailman/listinfo/njarc
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:NJARC at mailman.qth.net
>
> This list hosted by: http://www.qsl.net Please help support this email 
> list: http://www.qsl.net/donate.html
>
>
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 10.0.1430 / Virus Database: 2638/5539 - Release Date: 
> 01/17/13

--
Al Klase - N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/

______________________________________________________________
NJARC mailing list
Home: http://mailman.qth.net/mailman/listinfo/njarc
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:NJARC at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
______________________________________________________________
NJARC mailing list
Home: http://mailman.qth.net/mailman/listinfo/njarc
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:NJARC at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html