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

Unusual Audio Output Circuit
#7

The Philco 37-650 uses this same output push-pull design (using the
screen of tube #1 to get the phase inverted grid drive for tube #2.

Mine sounds fine to the ear, I have not even checked the matching of the 6F6's yet. Have not measured it for distortion or anything but it does
seem to work good enough.

Herb S.


Messages In This Thread
Unusual Audio Output Circuit - by Joeztech - 01-12-2014, 09:13 AM
RE: Unusual Audio Output Circuit - by codefox1 - 01-12-2014, 05:48 PM
RE: Unusual Audio Output Circuit - by Joeztech - 01-12-2014, 06:39 PM
RE: Unusual Audio Output Circuit - by BrendaAnnD - 01-12-2014, 10:31 PM
RE: Unusual Audio Output Circuit - by Arran - 01-12-2014, 11:28 PM
RE: Unusual Audio Output Circuit - by hsusmann - 01-13-2014, 03:21 PM
RE: Unusual Audio Output Circuit - by hsusmann - 01-26-2014, 02:50 PM
RE: Unusual Audio Output Circuit - by Randy H. - 01-26-2014, 06:41 PM
RE: Unusual Audio Output Circuit - by Joeztech - 01-27-2014, 06:44 AM
RE: Unusual Audio Output Circuit - by Radioroslyn - 01-27-2014, 07:12 AM
RE: Unusual Audio Output Circuit - by codefox1 - 02-02-2014, 07:42 PM



Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
Cannot Adjust an IF Transformer’s cores
The abilities of our 'Phorum Pholks" never ceases to amaze me! Fantastic fabrication, Joseph! I'm waiting now for...GarySP — 08:27 PM
PT-6 antenna connections
Thanks. I never realized that was a notch noted in the schematic as described. I’ll recheck my wiring.bridkarl — 08:13 PM
Cannot Adjust an IF Transformer’s cores
Thank you! I was quite new to the Phorum when I started this post, so I feel like it might be advantageous to publish a ...jrblasde — 08:07 PM
PT-6 antenna connections
Notice in the schematic the notch at the bottom of the antenna coil is between pins 3 & 4. Yes, pin 6 of the 7C6 is...RodB — 07:34 PM
bridkarl
I have two PT-6 chassis. On both there is a blue wire that runs from the above chassis transformer to pin 6 of 7C6. So t...bridkarl — 07:23 PM
Cannot Adjust an IF Transformer’s cores
Joseph, now you are an engineer!!RodB — 06:37 PM
PT-6 antenna connections
Hi, reading your explanation I can see the confusion. If you take it one connection at a time it should result in a desi...RodB — 06:34 PM
Cannot Adjust an IF Transformer’s cores
It works! I received the PCBs this morning in the mail, and put everything together. I reused the base from the original...jrblasde — 04:32 PM
PT-6 antenna connections
I seem to have lost my way on this PT-6. I see the antenna aerial transformer schematic - I’m reading pins 1 through ...bridkarl — 12:30 PM
40-150 General questions
Good thing you're a good electrician ... the pictures show a lot of rewiring in your future! Take care and BE HEALTHY!...GarySP — 11:52 AM

[-]
Who's Online
There are currently 4213 online users. [Complete List]
» 1 Member(s) | 4212 Guest(s)
Avatar

>