Philco 90 with Twin 47 Tubes in PP

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Philco 90 with Twin 47 Tubes in PP

morzh
Odobenus rosmarus

Posts: 15,819
Threads: 554
Joined: Oct 2011
City: Jackson, NJ

#26

05-14-2014, 02:11 PM

What the tube checks like is not quite everything especially when it comes to oscillators.
Once it starts though it will oscillate forever without problems - it is the start-up condition that is finicky. This is where the tube might potentially influence the behavior of the whole circuit.

You tester checks for certain parameters, it does not check for the whole performance.

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Messages In This Thread

Philco 90 with Twin 47 Tubes in PP - by joybird - 05-05-2014, 12:00 PM

RE: Philco 90 with Twin 47 Tubes in PP - by morzh - 05-05-2014, 03:39 PM

RE: Philco 90 with Twin 47 Tubes in PP - by TA Forbes - 05-05-2014, 03:39 PM

RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-05-2014, 04:02 PM

RE: Philco 90 with Twin 47 Tubes in PP - by Ron Ramirez - 05-05-2014, 04:46 PM

RE: Philco 90 with Twin 47 Tubes in PP - by Ron Ramirez - 05-05-2014, 04:51 PM

RE: Philco 90 with Twin 47 Tubes in PP - by morzh - 05-05-2014, 04:55 PM

RE: Philco 90 with Twin 47 Tubes in PP - by Ron Ramirez - 05-05-2014, 05:01 PM

RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-05-2014, 05:17 PM

RE: Philco 90 with Twin 47 Tubes in PP - by Arran - 05-05-2014, 06:23 PM

RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-05-2014, 06:42 PM

RE: Philco 90 with Twin 47 Tubes in PP - by Arran - 05-05-2014, 07:05 PM

RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-05-2014, 07:30 PM

RE: Philco 90 with Twin 47 Tubes in PP - by morzh - 05-05-2014, 07:45 PM

RE: Philco 90 with Twin 47 Tubes in PP - by gregb - 05-05-2014, 09:45 PM

RE: Philco 90 with Twin 47 Tubes in PP - by gregb - 05-05-2014, 09:49 PM

RE: Philco 90 with Twin 47 Tubes in PP - by morzh - 05-05-2014, 10:37 PM

RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-06-2014, 04:24 AM

RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-07-2014, 11:12 AM

RE: Philco 90 with Twin 47 Tubes in PP - by morzh - 05-07-2014, 02:21 PM

RE: Philco 90 with Twin 47 Tubes in PP - by Arran - 05-07-2014, 11:48 PM

RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-13-2014, 02:53 PM

RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-14-2014, 10:57 AM

RE: Philco 90 with Twin 47 Tubes in PP - by morzh - 05-14-2014, 11:15 AM

RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-14-2014, 01:23 PM

RE: Philco 90 with Twin 47 Tubes in PP - by morzh - 05-14-2014, 02:11 PM

RE: Philco 90 with Twin 47 Tubes in PP - by gregb - 05-14-2014, 04:22 PM

RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-15-2014, 01:18 PM

RE: Philco 90 with Twin 47 Tubes in PP - by morzh - 05-15-2014, 01:26 PM

RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-15-2014, 01:33 PM

RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-15-2014, 05:07 PM

RE: Philco 90 with Twin 47 Tubes in PP - by Warren - 05-15-2014, 07:46 PM

RE: Philco 90 with Twin 47 Tubes in PP - by Arran - 05-16-2014, 01:09 AM

RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-16-2014, 06:28 AM

RE: Philco 90 with Twin 47 Tubes in PP - by Arran - 05-17-2014, 02:40 AM

RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-20-2014, 07:40 AM

RE: Philco 90 with Twin 47 Tubes in PP - by TA Forbes - 05-20-2014, 09:42 AM

RE: Philco 90 with Twin 47 Tubes in PP - by joybird - 05-28-2014, 06:38 AM

RE: Philco 90 with Twin 47 Tubes in PP - by TA Forbes - 05-28-2014, 10:29 AM

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