Forums :: Resources :: Features :: Photo Gallery :: Vintage Radio Shows :: Archives
Support This Site: Contributors :: Advertise


It is currently Mar Tue 31, 2020 7:22 am


All times are UTC [ DST ]





Post New Topic Post Reply  [ 3 posts ] 
Author Message
 Post subject: What to do with two transformers?
PostPosted: Jun Thu 20, 2019 6:23 am 
Member
User avatar

Joined: Mar Sun 11, 2007 6:55 am
Posts: 11574
Location: Mission Viejo, southern California
One is a Merit 6.3V, 6A filament transformer, the other a power transformer from a radio chassis with a 432-0-432 HV winding, a 6.3V, 3A winding, and a 2.5V winding. I have some 6SN7 tubes, some #50 tubes, many 6V6 tubes, and various others.

_________________
many of my radios http://s269.photobucket.com/user/FSteph ... t=3&page=1


Top
 Profile  
 
 Post subject: Re: What to do with two transformers?
PostPosted: Jul Thu 04, 2019 10:23 pm 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 1501
Location: Cambridge MN USA
The #50 tubes should be saved for those who need them for their old radios. The transformer with the HV winding could be used for either a lower power (but not part-15!) transmitter or in a higher power audio amp. The 2.5V winding, depending upon current rating, was likely designed for one (or a pair) of the following tubes- 82; 816s; 866s. If you're not paranoid about MV rectifiers, that is. Cool thing about them is they put on a great light show, pulsing with the music.

Not sure what you'd do with that 6.3v@6A filament transformer other than using it with either a rheostat (primary side) or variac to power some medium power transmitter tubes like a pair of 4CX250s. It could potentially be used to power a whole bunch of tube heaters in a larger audio amp if you wanted a "standby" mode designed into it.

Scott Todd


Top
 Profile  
 
 Post subject: Re: What to do with two transformers?
PostPosted: Jul Fri 05, 2019 1:47 am 
Member

Joined: Sep Thu 23, 2010 6:37 am
Posts: 12229
Location: Powell River BC Canada
The 50s need 7.5 volt CT filament. If you run them class B you might
consider a 82 rectifier which needs a 2.5 volt filament winding.

6.3 + 1.25 = 7.55

_________________
de
VE7ASO VE7ZSO
Amateur Radio Literacy Club. May we help you read better.
Steve Dow
ve7aso@rac.ca


Top
 Profile  
 
Post New Topic Post Reply  [ 3 posts ] 

All times are UTC [ DST ]


Who is online

Users browsing this forum: No registered users and 1 guest



Search for:
Jump to:  
































-->


Privacy Policy :: Powered by phpBB