[TechAssist] Re: Sears antique radio, transformer problem

  • From: "KENNETH BARNES" <KENNYB928@xxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Fri, 13 Jan 2006 11:22:13 -0600

  Russ:  Thanks for the information.  I have the radio working and am waiting 
to get a transformer that is compatible.  I appreciate all the input from 
TechAssist techs.        Kenny
  ----- Original Message ----- 
  From: tvservice<mailto:tvservice@xxxxxxxxxxxxx> 
  To: techassist@xxxxxxxxxxxxx<mailto:techassist@xxxxxxxxxxxxx> 
  Sent: Monday, January 09, 2006 5:26 PM
  Subject: [TechAssist] Re: Sears antique radio, transformer problem

  try www.tubesandmore.com<http://www.tubesandmore.com/>

  Robert
  tvservice@xxxxxxxxxxxxx<mailto:tvservice@xxxxxxxxxxxxx>
  H & H Electronics Inc
  http://supertek.igniteinc.biz<http://supertek.igniteinc.biz/>

  ----- Original Message ----- 
  From: "KENNETH BARNES" <KENNYB928@xxxxxxx<mailto:KENNYB928@xxxxxxx>>
  To: <techassist@xxxxxxxxxxxxx<mailto:techassist@xxxxxxxxxxxxx>>
  Sent: Monday, January 09, 2006 4:22 PM
  Subject: [TechAssist] Re: Sears antique radio, transformer problem


  >   Russ:  Thanks for your reply.  I hooked another transformer in circuit -
  primary reads 175 ohms, secondary .7 ohms.  Speaker doesn't give good sound
  as you said.  Bad transf. is about 3 times larger than the one I subbed for
  and iron core is much larger in the bad transf.     Any ideas?    Thanks
  again.   Kenny
  >   ----- Original Message ----- 
  >   From: Hoyt's TV<mailto:hoytstv@xxxxxxxxxxx<mailto:hoytstv@xxxxxxxxxxx>>
  >   To: 
techassist@xxxxxxxxxxxxx<mailto:techassist@xxxxxxxxxxxxx<mailto:techassist@xxxxxxxxxxxxx<mailto:techassist@xxxxxxxxxxxxx>>
  >   Sent: Tuesday, January 03, 2006 2:12 PM
  >   Subject: [TechAssist] Re: Sears antique radio, transformer problem
  >
  >   You can figure it out by the type of output tube they both fit. Look
  them up
  >   in an RCA tube manual. I believe will tell you the output impedance for
  the
  >   tubes. Tubes weren't too fussy though, I think you could get by with
  most
  >   any output transformer for a radio of similar type. Likewise the tube
  won't
  >   care too much about using a 4 ohm speaker with an 8 ohm transformer.
  However
  >   your audiophile customer may go ballistic when those 25kc notes that
  he's
  >   accustomed to hearing crystal clear, become a little distorted.
  >
  >
  >   Russ Hoyt
  >   Hoyt's TV
  >   Exeter, NH
  >
  >
  >   ----- Original Message ----- 
  >   From: "KENNETH BARNES" 
<KENNYB928@xxxxxxx<mailto:KENNYB928@xxxxxxx<mailto:KENNYB928@xxxxxxx<mailto:KENNYB928@xxxxxxx>>>
  >   To: "techassist"
  
<techassist@xxxxxxxxxxxxx<mailto:techassist@xxxxxxxxxxxxx<mailto:techassist@xxxxxxxxxxxxx<mailto:techassist@xxxxxxxxxxxxx>>>
  >   Sent: Tuesday, January 03, 2006 12:07 PM
  >   Subject: [TechAssist] Re: Sears antique radio, transformer problem
  >
  >
  >   > Sears antique radio - Question:  A transformer mounted on the speaker
  is
  >   > open on the primary.  The secondary winding on the transformer is .5
  ohms.
  >   > The B+ feeding the transformer primary is 90 volts.  The speaker is
  3.6
  >   > ohms.  I have a good transf. from another speaker which is 8 ohms, the
  >   > secondary winding is .7 ohms, the primary winding is 175 ohms.  Can I
  use
  >   > this transformer in place of the bad one?     TIA            Kenny
  >   > Kenny Barnes TV
  >   > 928 S. Marshall St.
  >   > Boone IA 50036
  >   > 515 432 5250
  >   >
  
KENNYB928@xxxxxxx<mailto:KENNYB928@xxxxxxx<mailto:KENNYB928@xxxxxxx<mailto:K<mailto:KENNYB928@xxxxxxx<mailto:KENNYB928@xxxxxxx<mailto:KENNYB928@xxxxxxx<mailto:K>
  ENNYB928@xxxxxxx<mailto:ENNYB928@xxxxxxx>>>
  >   >
  >


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