|
|||||||
| Home | Forums | Rules | Articles | Store | Gallery | Blogs | Register | Donations | FAQ | Calendar | Search | Today's Posts | Mark Forums Read | Search |
| Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum |
| diyAudio Sponsor | ||
|
||
 |
|
|
Thread Tools | Search this Thread |
10th July 2006, 01:00 PM
|
#1 |
|
diyAudio Member
Join Date: Aug 2004
Location: Bangkok
|
12AU7 testing result: Are these tubes still good?
Firstly, for four ECC82 Miniwatt tubes, I conducted the emission test with Funke W19 and got these values
Tube #1 - 11.0/11.0mA Tube #2 - 15.0/15.0mA Tube #3 - 12/12mA Tube #4 - 11.5/11.5mA I don't know what we can tell from these results. Are they still good? or is it enough to conclude? Secondly, can we select two match pair tubes from these four tubes? My guess would be tube #1 and #4. Correct? Thank you. |
|
|
10th July 2006, 02:14 PM
|
#2 | |
|
diyAudio Member
Join Date: Sep 2004
|
OK for life, I'd say. Few circuits actually run them that high.
Apply -9V to the grid, does the plate current nosedive on all of them fair equal? If so, they're good to go!  Quote:
|
|
|
|
|
| Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
| Thread Tools | Search this Thread |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| Mini amp using 12AU7's as power tubes? | porkchop61 | Tubes / Valves | 3 | 16th January 2008 12:23 PM |
| FS: Vacuum Tubes (12au7, 12ax7, 6dj8, EL84) | mrdon | Swap Meet | 4 | 28th October 2006 08:13 PM |
| To Brian: XGC... any good result? | dw1narso | Chip Amps | 3 | 20th January 2005 02:37 PM |
| -----testing Tubes---- | ICARE | Tubes / Valves | 0 | 26th June 2003 01:38 PM |
| Testing Tubes | Rino odorico | Tubes / Valves | 2 | 4th October 2002 06:31 PM |
| New To Site? | Need Help? |
| Page generated in 0.06514 seconds (66.86% PHP - 33.14% MySQL) with 10 queries |
