Videokarma.org

Go Back   Videokarma.org TV - Video - Vintage Television & Radio Forums > Antique Radio

We appreciate your help

in keeping this site going.
Reply
 
Thread Tools Display Modes
  #1  
Old 09-14-2009, 09:53 PM
radio nut's Avatar
radio nut radio nut is offline
Born in the wrong decade
 
Join Date: Dec 2007
Location: Lima, Ohio
Posts: 817
resistor in power cord

I have a olympic radio (6a606)that has a wire wound resistor in the power cord. Of course the cord is junk and here is the problem; I have two options, I do have a 20 watt resitor or I have a roll of resistor wire The diagram calls for it to be 540ohms.If I use the wire I will have a 4 foot section to try and hide(it gets kind of warm). If I use the 20 Watt resitor it gets really really darn hot. The radio only pulls 20 Watts and this resistor does not have to cover for the whole radio, just the 35Z5 rectifier tube and the panel light.The heat from the 20 watt res. bothers me though.Any ideas?, other options?
Reply With Quote
  #2  
Old 09-15-2009, 12:30 AM
wa2ise's Avatar
wa2ise wa2ise is offline
VideoKarma Member
 
Join Date: Dec 2002
Location: USA
Posts: 3,147
You could do a capacitance in series with the heaters to drop the AC powerline voltage without generating waste heat. See my web page http://pw2.netcom.com/~wa2ise/radios/compaa3.html#hcap that describes how to select a cap, and some simple SW and Excel spreadsheet to calculate it.
__________________
Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 07:28 AM.



Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
©Copyright 2012 VideoKarma.org, All rights reserved.