Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

CT-2 Chrysler radio
#3

Bob
Thanks for the input.  I did get the oscillator to run by dropping the 11K resistor all the way to 1K
and changing R3 (70K)….It was out of tolerance.
I also installed a #36 tube for the RF
one of the schematics called for a 39/44

On your suggestion I rechecked the RF transformer.  

It seemed resistances came up defying common sense.
I have Coil #1 out of the radio and it reads  19.3 ohms on the primary
However the secondary reads across the coil 7.57 ohms
from the bottom of the coil to the center tap 6.55 ohms
from the center tap to the top of the coil to the center tap 7.75 ohms

I would expect the total coil resistance to be 7.75 + 6.55...14.30 ohms total ??
I have no clue as to what is going on here?

I will probable unwind  it to try to figure out what gives.

Tom


Messages In This Thread
CT-2 Chrysler radio - by tmr63 - 03-29-2020, 09:14 PM
RE: CT-2 Chrysler radio - by fenbach - 03-31-2020, 12:02 AM
RE: CT-2 Chrysler radio - by tmr63 - 04-13-2020, 05:11 PM
RE: CT-2 Chrysler radio - by fenbach - 04-13-2020, 11:14 PM
RE: CT-2 Chrysler radio - by tmr63 - 04-28-2020, 02:34 PM
RE: CT-2 Chrysler radio - by Tim Tress - 05-08-2020, 01:21 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 42-345 Restoration/Repair
Yes, 57 is an electrolytic cap that should be 12 mfd 400 volts according to the parts list from the Phorum library schem...RodB — 06:01 PM
Philco 42-345 Restoration/Repair
Looks like if I am reading it correctly it looks like the silver capacitor#57 that appears to be a replacement is of a l...osanders0311 — 05:09 PM
Philco model 38 code 121 not receiving signal.
Thanks Arran. Yeah this plastic is pretty thin. It's a little thinner than the original stuff. It kinda reminds me of p...Stormlord5500 — 04:37 PM
Testing a speaker and output transformer Trutone A2-G
The equivalent of one short turn is basically the same as that of a shorted load. If it is the primary's turn, then the ...morzh — 03:53 PM
Testing a speaker and output transformer Trutone A2-G
I've never had an output transformer become shorted, the failure mode is usually an open primary, or in a center tapped ...Arran — 03:52 PM
Philco model 38 code 121 not receiving signal.
As long as the plastic sheeting isn't too thick, I think that the thickness of photographic film would be just about rig...Arran — 03:19 PM
Philco model 38 code 121 not receiving signal.
Well why not! :lol:Stormlord5500 — 03:14 PM
Philco model 38 code 121 not receiving signal.
Good luck next thing you know you will be winding coils just for the fun of it. DavidDavid — 11:29 AM
Testing a speaker and output transformer Trutone A2-G
morzh Short-circuited turns can be considered as a half-dead transformer. But on this case transformer will hot and s...Vlad95 — 11:01 AM
Testing a speaker and output transformer Trutone A2-G
I am not sure how a transformer could be weak. It could be inadequate, but only when you replace the original with somet...morzh — 09:56 AM

[-]
Who's Online
There are currently no members online.

>