[AMRadio] Smoothing Choke


KB2WIG at twcny.rr.com KB2WIG at twcny.rr.com
Wed May 3 17:24:38 EDT 2006


Rick, IN my AN/ART-13, I'm using a 4H .25 amp choke in my B+.. no 
problem. It consists of (2) 10uF 2kv oil cans with the choke in the 
negative lead (upside down pie, along with 100K bleaders). No problems 
so far ......       any questions, feel free....   klc

----- Original Message -----
From: Rick Brashear <rickbras at airmail.net>
Date: Wednesday, May 3, 2006 4:22 pm
Subject: [AMRadio] Smoothing Choke
To: Discussion of AM Radio <amradio at mailman.qth.net>

> Hi:
> I am finally building the power supply for my ART-13 transmitter 
> and 
> would like your opinion on a thing or two.  Thanks to Ronnie Hull, 
> I 
> have a  5 - 25 henry swinging choke for the HV supply.  I also 
> have, 
> thanks to an old TX-1, a 400 ma smoothing choke, 5.5 henry @ 400 
> ma.  I 
> wanted to use something a little larger, maybe 10 or 12 henry.  
> I'm 
> using 866 or maybe 3B28 rectifiers and 4 mfd and 8 mfd filters.  
> Do you 
> think the 5.5 henry choke will be sufficient?
> 
> I also need another 5 - 25 swinging choke in the 250 ma range for 
> the 
> 400 volt supply.  It too will use another 5.5 henry choke if it is 
> determined that is sufficient.
> 
> Any and all advice, opinions, criticism or comments are welcome.
> 
> Thanks,
> Rick/K5IZ
> 
> 
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