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

using 12AU7 on 34
#16

Marty

It would probably benefit you to read a simple explanation of how Class A/B/AB amp works. Then you'll know the relation of that DC to AC and why. Trust me it is not that complicated.
Also makes sense to familiarize yourself with the principles of the passives including transformers. It always helps to understand what is going on.
#17

Hi All;
I have download a number of good old books and have started to go thru them.. I also got in my Tubes, Yesterday.. My chassis is got two coats of Primer paint and two coats of its final color, and will get two coats of Clear coat, before this weekend is done.. If I do say so myself, it looks real nice, now.. Then I can start re-wiring, section by section.. Starting with the Output Amplifier and the two Transformers..
THANK YOU Marty
#18

No such thing as a reliable capacitor cheks for vintage stuff, voltage load not. Pretty much same for carbon resitors. Guilty until prove innocent applies only here.
#19

Hi All;
I am not sure specificially what Codefox is refering to, from my last post.. But, I have most of the Caps and Resistors that are needed for this Radio, this week, I will see where I stand, and If I have enough funds to get anything that I don't have as of yet.. Then I can start the re-building process..
THANK YOU Marty




Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
New Philco Repair Bench
Morzh is correct. The repair bench on our website is an archived image of chuck’s original site. He no longer provides s...klondike98 — 05:32 PM
Made mistake & did not label connection
Excellent information. It is all starting to come together now and your explanation really helped since I noticed that ...georgetownjohn — 04:39 PM
Made mistake & did not label connection
Hi John, I don't have this radio, but I can supply some info: Based on your pic, pins 7,8 and 1 are used together, go...MrFixr55 — 02:02 PM
New Philco Repair Bench
As far as I know, the Repairbench does not work, and has not been working in a while. Chuck (we had that campaign looki...morzh — 01:33 PM
Radio city products 664 schematic request
Need a schematic or manual for the 664. The 663 may be similar.daveone23 — 12:38 PM
New Philco Repair Bench
Thanks Gary.dconant — 12:16 PM
New Philco Repair Bench
I tried accessing the site through our library and got the same response. It's reported to our tech gurus. GaryGarySP — 11:50 AM
New Philco Repair Bench
I am sure this is the archive, and not the Chuck's site.morzh — 09:50 PM
Made mistake & did not label connection
It's not like we are good friends with that wire and can tell it from other ptetty identical looking wires. Why'n't you...morzh — 09:49 PM
Made mistake & did not label connection
I'm not sure why that wire wasn't covered in the video. I'm pretty sure the 6A8 won't work until that pin is grounded. Y...RodB — 09:47 PM

[-]
Who's Online
There are currently 4737 online users. [Complete List]
» 1 Member(s) | 4736 Guest(s)
Avatar

>