[MRCG] SCR-522 xtals

[boatanchor at martasystems.com]

Dennis -
That is no-load. I will double-check the wiring to make sure it's still 
setup for choke input. The unit had one other modification (that was MFP'd, 
so it was done a long time ago) where the B+ relay is now used to ground the 
transformer center tap vs simply closing contacts for B+ output, so it's 
possible the filter configuration was changed somewhere along the line.

The book calls for about 300 ma load and specs the output at about 310 v.

jc


-----Original Message----- 
From: mac
Sent: Sunday, January 19, 2014 23:36
To: West Coast Military Radio Collectors Group
Subject: Re: [MRCG] SCR-522 xtals

John,

Could the filter on the B+ have been changed from a choke input type
to  capacitor input somewhere along the line?  Also, is 465 volts  a
no-load measurement?

Dennis

*********
On Jan 19, 2014, at 11:04 AM, <boatanchor at martasystems.com> wrote:

> Hi Chuck -
>
> When you get a chance, could you measure the B+ on your RA-62 with  no 
> load ? After getting mine working (recapped, replaced bad  bleeder, etc) 
> my no-load voltage is +465 volts with the power switch  in the 125 
> position. The bias is spot on at -150, and the filaments  seem ok at +14. 
> For comparison, my dynamotor no-load B+ is 300 v,  about what it's 
> supposed to be...   hmmm.
>
> Thanks
> John WB6AZP
>

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

Website: http://www.mrcgwest.org

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: 2014.0.4259 / Virus Database: 3681/7015 - Release Date: 01/19/14