Early 2 tube trans

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

Linear Mode

Early 2 tube trans

morzh
Odobenus rosmarus

Posts: 16,305
Threads: 569
Joined: Oct 2011
City: Jackson State, Province, Country: NJ

12-28-2013, 05:20 PM

In tube radios I have never seen a ratio as low as 3:1. Which would mean that even an 8 Ohm speaker would present as 72 Ohm impedance to the tube which is waaaaay low.

Your typical ratio at least 20-30.
Of course if your power voltage is very low and output currents high then it is possible but then we are talking transistor level voltages.

Find

« Next Oldest | Next Newest »

Thread Closed

Messages In This Thread

Early 2 tube trans - by tab10672 - 12-28-2013, 01:19 PM

RE: Early 2 tube trans - by morzh - 12-28-2013, 05:20 PM

RE: Early 2 tube trans - by Alan Douglas - 12-28-2013, 07:38 PM

RE: Early 2 tube trans - by tab10672 - 12-28-2013, 08:31 PM

RE: Early 2 tube trans - by BrendaAnnD - 12-28-2013, 09:27 PM

RE: Early 2 tube trans - by tab10672 - 12-28-2013, 10:57 PM

View a Printable Version

Users browsing this thread: 4 Guest(s)

Recent Posts
The speaker table error?
G 10-1/2" 65, 76, 87, 95 Push-Pull 45's 2766 0.7 550 3200 H 10-1/2" 77, 96 Push-Pull...morzh — 09:26 PM
A Marconi model 86
I have a Stromberg, one of the early ones, seems early 30s. This is what I call a back breaker. None of the early Philc...morzh — 08:28 PM
A Marconi model 86
A backbreaker.....PaulPaul Philco322 — 08:12 PM
A Marconi model 86
>>What a behemoth! A Juggernaut.morzh — 07:47 PM
Philco 70 antenna lead
I am not sure I understood about the coils and the mush. I looked an more than one coil in 20, 70, 90, 60, Zeniths and ...morzh — 07:46 PM
A Marconi model 86
:e_biggrin: What a behemoth! I hope the final result is as much a quality sounding example! Keep us posted on your pro...GarySP — 07:32 PM
A Marconi model 86
I should add that the double conversion may only be used on the shortwave bands, but I haven't looked at the schematic t...Arran — 07:27 PM
Philco 70 antenna lead
Yes, that wire will not pick up much interference as routed - the RF at that level won't be affected, and if you have st...radio1 — 07:26 PM
Philco model 60
I'm also a member of MARC. Did you attend the Vintage Electronics Expo in Waterford, MI last month? That's where I got...GarySP — 07:22 PM
A Marconi model 86
Dan Double conversion is using two IF converters instead of one. This improves the image response. morzh — 07:15 PM

Who's Online

There are currently 3638 online users. [Complete List]
» 3 Member(s) | 3635 Guest(s)

Login
Username:
Password:	Lost Password?
	Remember me