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

46-1201 - Cap question...
#1

Hi all,  long time no post...

I'm working on a 46-1201 radio phono combination and came across an odd capacitor that
I've never seen before.
Keeping in mind that I'm relatively new to all of this,  I've attached the section if the schematic for
this part.  It appears to be a paper capacitor with a coil wrapped around it.

What is it called?  What does it do?  Can I just replace the capacitor and leave the coil alone (it won't
really be wrapped around the capacitor any more)?

Should I just leave the whole thing alone?

Thanks.

   
#2

The coil and capacitor combination serves to create a series resonant circuit at the 455 kHz IF frequency. This provides better bypassing of circuit ground to the chassis and prevents possible oscillations in the IF.

The best solution would be to restuff the original cardboard tube with a modern cap inside and leave the wire wrapped around it as original.
#3

Thank you kindly for the explanation. Much clearer now.
#4

GRUMP Welcome back!
#5

Thanks. My radio projects have been few and far between, but I've been reading and researching as I go.
This is one of my favorite places, I learn so much here.




Users browsing this thread:
[-]
Recent Posts
Need to purchase some accessories for restoration of my Old Philco Radio
Here is a list of resources found in our online library that you might find useful. Mike's Gobs of Knobs email addres...klondike98 — 01:46 PM
First Radio restoration
Hi Tubeman, Welcome to the Philco Phorum.  Phamily Phriendly Pfun with Phine Pholks Phull of Philco Phacts. (See a p...MrFixr55 — 12:33 PM
First Radio restoration
You could post in the WANTED ADs section here on the Phorum and see if anyone has an RF generator that they want to sell...klondike98 — 11:55 AM
Zenith H725
Good ideas, thank you Arrange and Rich. I have the adhesive aluminum foil already and can try that immediately. More ...EdHolland — 10:18 AM
Graphics for majestic 1050 dial glass.
Murf; I found this thread on the ARF, the first photo has a pretty good view of the dial glass. Regards ArranArran — 01:12 AM
Zenith H725
hello Ed, how about that speacial tape used for ducting it's like foil or how about thin piece of aluminum roof flash...radiorich — 12:19 AM
Zenith H725
Ed; One material that I have seen, but never tried for this was material for making exhaust gaskets, it's similar to ...Arran — 11:42 PM
Zenith H725
I just remembered, I have some hi temp silicone rubber material which could do the trick. Or a piece of FR4 laminate. Th...EdHolland — 08:39 PM
Zenith H725
The PSU filter cap arrived today (thank you USPS!) so I will work on that later. Meanwhile, I have the dial, speaker...EdHolland — 06:42 PM
Philco 610B oscillator wiring
Thanks Terry. After checking my notes I think I recorded about -10v at the 6A7 G4/control grid. The screen grid (G3 &...Tubester — 05:59 PM

[-]
Who's Online
There are currently 2351 online users. [Complete List]
» 1 Member(s) | 2350 Guest(s)
Avatar

>