Valves

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300Kohm 1W resistor sought

Last post by Mike H « Sun Mar 03, 2013 10:11 am
Replies: 5
by Michael L » Sat Mar 02, 2013 7:06 pm

5 Replies

4923 Views

Last post by Mike H
Sun Mar 03, 2013 10:11 am
Dodgy 300B

Last post by Mike H « Sat Feb 16, 2013 12:47 pm
Replies: 5
by Clive » Thu Feb 14, 2013 9:06 pm

5 Replies

4601 Views

Last post by Mike H
Sat Feb 16, 2013 12:47 pm
valve frequency responce

Last post by Mike H « Thu Feb 14, 2013 1:46 pm
Replies: 42
by jwoodaudio » Mon Dec 17, 2012 8:52 pm
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42 Replies

19852 Views

Last post by Mike H
Thu Feb 14, 2013 1:46 pm
Grid Current

Last post by Paul Barker « Mon Jan 28, 2013 6:38 am
Replies: 60
by Paul Barker » Fri Jan 25, 2013 9:11 am
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60 Replies

13363 Views

Last post by Paul Barker
Mon Jan 28, 2013 6:38 am
Maybe not this week

Last post by Greg « Sat Jan 19, 2013 9:45 pm
Replies: 18
by Nick » Thu Jan 17, 2013 10:44 pm
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2
18 Replies

7471 Views

Last post by Greg
Sat Jan 19, 2013 9:45 pm
CV2799

Last post by pre65 « Fri Jan 11, 2013 10:52 pm
Replies: 131
by pre65 » Sun Feb 26, 2012 4:05 pm
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131 Replies

29488 Views

Last post by pre65
Fri Jan 11, 2013 10:52 pm
6D22s damper diodes.

Last post by pre65 « Sun Jan 06, 2013 4:53 pm
Replies: 46
by pre65 » Thu Jan 03, 2013 6:33 pm
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46 Replies

17474 Views

Last post by pre65
Sun Jan 06, 2013 4:53 pm
How a Magnatron works

Last post by thomas « Thu Dec 20, 2012 8:49 pm
Replies: 5
by Paul Barker » Tue Sep 18, 2012 7:48 pm

5 Replies

3618 Views

Last post by thomas
Thu Dec 20, 2012 8:49 pm
Cinema amplifier - PX25

Last post by Mike H « Sat Dec 15, 2012 6:15 pm
Replies: 2
by IslandPink » Sat Dec 15, 2012 5:15 pm

2 Replies

2488 Views

Last post by Mike H
Sat Dec 15, 2012 6:15 pm
HELP ! Info on valve delay relays.

Last post by Mike H « Sat Dec 15, 2012 2:03 pm
Replies: 8
by pre65 » Mon Dec 10, 2012 12:30 pm

8 Replies

2839 Views

Last post by Mike H
Sat Dec 15, 2012 2:03 pm
4 Tons of Tubes

Last post by jack « Fri Oct 12, 2012 3:51 pm
Replies: 4
by simon » Thu Oct 11, 2012 10:03 pm

4 Replies

4009 Views

Last post by jack
Fri Oct 12, 2012 3:51 pm
Dear Marge

Last post by Cressy Snr « Thu Sep 20, 2012 9:28 pm
Replies: 15
by Cressy Snr » Wed Sep 19, 2012 1:09 pm
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15 Replies

8647 Views

Last post by Cressy Snr
Thu Sep 20, 2012 9:28 pm
Philips Osram/GEC silent 1930 film on making valves...

Last post by Mike H « Mon Sep 17, 2012 5:19 pm
Replies: 1
by jack » Mon Sep 17, 2012 2:15 pm

1 Replies

2554 Views

Last post by Mike H
Mon Sep 17, 2012 5:19 pm
New DIY tester...

Last post by jack « Sat Sep 15, 2012 10:51 am
Replies: 2
by jack » Thu Sep 13, 2012 5:39 pm

2 Replies

3401 Views

Last post by jack
Sat Sep 15, 2012 10:51 am
Are valves only for the rich ?????

Last post by Mike H « Wed Sep 12, 2012 10:33 am
Replies: 33
by MrAcoustat » Mon Jul 16, 2012 10:25 am
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33 Replies

14898 Views

Last post by Mike H
Wed Sep 12, 2012 10:33 am
Stern's Valve Amp (1960's?) Schematic & Info Please?

Last post by rich270 « Sat Sep 08, 2012 9:54 am
Replies: 3
by VT116B » Sat Mar 26, 2011 2:20 pm

3 Replies

3334 Views

Last post by rich270
Sat Sep 08, 2012 9:54 am
The use of VR tubes.

Last post by Mike H « Tue Sep 04, 2012 1:33 pm
Replies: 22
by Paul Barker » Wed May 16, 2012 8:16 am
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22 Replies

8508 Views

Last post by Mike H
Tue Sep 04, 2012 1:33 pm
7193 (6J5 ish) cheap BIN on eBay Hurry

Last post by Paul Barker « Sun Sep 02, 2012 9:19 am

by Paul Barker » Sun Sep 02, 2012 9:19 am

0 Replies

1942 Views

Last post by Paul Barker
Sun Sep 02, 2012 9:19 am
For Paul Barker

Last post by Paul Barker « Sat Sep 01, 2012 12:54 pm
Replies: 2
by Stuart Dean » Fri Aug 17, 2012 9:15 am

2 Replies

3248 Views

Last post by Paul Barker
Sat Sep 01, 2012 12:54 pm
Six Sixty six (Mullard seconds)

Last post by Paul Barker « Mon Aug 20, 2012 10:13 pm

by Paul Barker » Mon Aug 20, 2012 10:13 pm

0 Replies

2201 Views

Last post by Paul Barker
Mon Aug 20, 2012 10:13 pm
4-65a Interesting Eimac DH Tetrode

Last post by nic « Mon Aug 20, 2012 2:01 pm
Replies: 2
by Paul Barker » Thu Apr 26, 2012 8:25 am

2 Replies

4063 Views

Last post by nic
Mon Aug 20, 2012 2:01 pm
A Bit of valve history...

Last post by steve s « Thu Aug 09, 2012 2:43 pm
Replies: 13
by steve s » Wed Apr 04, 2012 9:40 am

13 Replies

7724 Views

Last post by steve s
Thu Aug 09, 2012 2:43 pm
New OPT Amp...

Last post by steve s « Tue Aug 07, 2012 10:34 pm
Replies: 22
by Ray P » Sat Apr 28, 2012 7:09 pm
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22 Replies

16620 Views

Last post by steve s
Tue Aug 07, 2012 10:34 pm
6N1

Last post by Ali Tait « Sat Aug 04, 2012 11:20 pm

by Ali Tait » Sat Aug 04, 2012 11:20 pm

0 Replies

1619 Views

Last post by Ali Tait
Sat Aug 04, 2012 11:20 pm
Mazda pp3/250

Last post by Mike H « Thu Aug 02, 2012 1:29 pm
Replies: 12
by Stuart Dean » Sun Jul 22, 2012 3:38 pm

12 Replies

6959 Views

Last post by Mike H
Thu Aug 02, 2012 1:29 pm
RCA TYPE 27 BLACK PLATE TRIODE

Last post by colin.hepburn « Wed Aug 01, 2012 6:55 pm
Replies: 7
by colin.hepburn » Wed Aug 01, 2012 2:44 pm

7 Replies

4031 Views

Last post by colin.hepburn
Wed Aug 01, 2012 6:55 pm
Using a 12A (112A)

Last post by pre65 « Tue Jul 31, 2012 10:36 pm
Replies: 12
by pre65 » Sat Sep 26, 2009 8:49 am

12 Replies

4274 Views

Last post by pre65
Tue Jul 31, 2012 10:36 pm
Glow Tube Voltage Droppers

Last post by Cressy Snr « Mon Jul 09, 2012 5:26 pm
Replies: 9
by Cressy Snr » Sat Jul 07, 2012 10:50 am

9 Replies

4739 Views

Last post by Cressy Snr
Mon Jul 09, 2012 5:26 pm
Helpful hints

Last post by Paul Barker « Sun Jul 08, 2012 8:52 pm

by Paul Barker » Sun Jul 08, 2012 8:52 pm

0 Replies

1574 Views

Last post by Paul Barker
Sun Jul 08, 2012 8:52 pm
Cryo valve treatment

Last post by andrew Ivimey « Thu Jun 28, 2012 10:30 pm
Replies: 43
by Greg » Thu Oct 27, 2011 11:33 pm
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43 Replies

17573 Views

Last post by andrew Ivimey
Thu Jun 28, 2012 10:30 pm
B9a bases

Last post by Mike H « Tue Jun 26, 2012 6:21 pm
Replies: 3
by pre65 » Mon Jun 25, 2012 10:42 pm

3 Replies

2031 Views

Last post by Mike H
Tue Jun 26, 2012 6:21 pm
EY500 help please? Phil, others who have used it?

Last post by Nick « Mon Jun 04, 2012 3:04 pm
Replies: 15
by Paul Barker » Fri Apr 20, 2012 10:34 am
1

2
15 Replies

7571 Views

Last post by Nick
Mon Jun 04, 2012 3:04 pm
What is a Welded plate 12au7?

Last post by Mike H « Sun May 20, 2012 4:10 pm
Replies: 5
by Paul Barker » Sun May 13, 2012 7:54 am

5 Replies

4120 Views

Last post by Mike H
Sun May 20, 2012 4:10 pm
Different Pentode Connections

Last post by andrew Ivimey « Wed May 16, 2012 4:48 pm
Replies: 6
by Paul Barker » Tue May 15, 2012 8:35 am

6 Replies

3247 Views

Last post by andrew Ivimey
Wed May 16, 2012 4:48 pm
GZ30

Last post by simon « Sat Apr 07, 2012 6:37 pm
Replies: 2
by simon » Sat Apr 07, 2012 5:25 pm

2 Replies

2165 Views

Last post by simon
Sat Apr 07, 2012 6:37 pm
Electronic Universal Vade-Mecum

Last post by Paul Barker « Mon Apr 02, 2012 3:37 pm
Replies: 10
by Paul Barker » Sat Mar 31, 2012 5:02 pm

10 Replies

6103 Views

Last post by Paul Barker
Mon Apr 02, 2012 3:37 pm
Push-Pull Ultralinear

Last post by Audio_Works « Mon Mar 26, 2012 11:11 pm
Replies: 2
by Audio_Works » Mon Mar 26, 2012 8:23 pm

2 Replies

3615 Views

Last post by Audio_Works
Mon Mar 26, 2012 11:11 pm
Power op amp driving valve in A2

Last post by Mike H « Fri Mar 02, 2012 4:04 pm
Replies: 62
by pre65 » Sat Dec 10, 2011 11:38 am
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62 Replies

25984 Views

Last post by Mike H
Fri Mar 02, 2012 4:04 pm
New 50's from Emmission Labs

Last post by pre65 « Thu Mar 01, 2012 9:36 am
Replies: 14
by IslandPink » Thu Feb 16, 2012 4:19 pm

14 Replies

7538 Views

Last post by pre65
Thu Mar 01, 2012 9:36 am
Gas regulator tubes (VR tubes)

Last post by Mike H « Wed Feb 22, 2012 4:14 pm
Replies: 13
by Max N » Sat Dec 03, 2011 10:41 am

13 Replies

8069 Views

Last post by Mike H
Wed Feb 22, 2012 4:14 pm
VALVO 807s

Last post by colin.hepburn « Wed Feb 15, 2012 8:16 pm
Replies: 9
by colin.hepburn » Thu Feb 09, 2012 6:14 pm

9 Replies

6081 Views

Last post by colin.hepburn
Wed Feb 15, 2012 8:16 pm
Heater/cathode supply

Last post by acorn « Thu Feb 09, 2012 1:44 pm
Replies: 4
by acorn » Wed Feb 08, 2012 4:17 pm

4 Replies

4367 Views

Last post by acorn
Thu Feb 09, 2012 1:44 pm
Russian 6P3S-E as a substitute for an EL34/5881

Last post by Audio_Works « Mon Jan 16, 2012 9:35 am
Replies: 8
by colin.hepburn » Sat Oct 08, 2011 5:18 pm

8 Replies

10204 Views

Last post by Audio_Works
Mon Jan 16, 2012 9:35 am
Filament supply modules.

Last post by Mike H « Sun Jan 01, 2012 9:07 pm
Replies: 247
by pre65 » Mon Sep 13, 2010 1:02 pm
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247 Replies

99340 Views

Last post by Mike H
Sun Jan 01, 2012 9:07 pm
Shunt Reg Using a 13E1 as Shunt Element

Last post by Paul Barker « Sat Dec 31, 2011 7:47 pm
Replies: 70
by Cressy Snr » Thu Dec 22, 2011 8:34 pm
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70 Replies

29803 Views

Last post by Paul Barker
Sat Dec 31, 2011 7:47 pm
SRPP Series Shunt Reg Anyone?

Last post by Paul Barker « Fri Dec 30, 2011 10:56 pm
Replies: 56
by Cressy Snr » Thu Dec 29, 2011 4:40 pm
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56 Replies

21988 Views

Last post by Paul Barker
Fri Dec 30, 2011 10:56 pm
6B4G testing...

Last post by JamesD « Tue Dec 27, 2011 9:45 pm
Replies: 3
by jack » Fri Dec 16, 2011 9:50 pm

3 Replies

3819 Views

Last post by JamesD
Tue Dec 27, 2011 9:45 pm
'E'-Choke

Last post by Mike H « Tue Dec 13, 2011 3:06 pm
Replies: 189
by Mike H » Sat Oct 03, 2009 3:08 pm
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189 Replies

70250 Views

Last post by Mike H
Tue Dec 13, 2011 3:06 pm
Loose valve bases - any way to fix them?

Last post by Toppsy « Mon Nov 21, 2011 2:38 pm
Replies: 4
by Max N » Fri Nov 18, 2011 8:55 pm

4 Replies

2769 Views

Last post by Toppsy
Mon Nov 21, 2011 2:38 pm
shuguang 211

Last post by simon « Thu Nov 03, 2011 1:14 pm
Replies: 11
by ed » Tue Nov 01, 2011 9:00 am

11 Replies

6018 Views

Last post by simon
Thu Nov 03, 2011 1:14 pm

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