|
|||||||
| 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 |
1st March 2011, 02:44 AM
|
#1 |
|
diyAudio Member
Join Date: Dec 2009
Location: Orange County, California.
|
Use CL-90 to slow 5Y3?
Can I put a CL-90 in the 5V filiment supply to reduce start up voltage spike?
The voltage doesn't get too bad. It goes to about 360V before it settles down to the 280V opperating point. I would feel better if I could keep it under 300V.
__________________
The Myth: A hand full of Tubes, Caps, Resistors and Iron and you have an Amp. The Reality: You have self induced Dementia. Newbie. |
|
|
1st March 2011, 03:29 AM
|
#2 |
|
diyAudio Member
Join Date: Apr 2004
Location: Plainsboro, NJ
|
Put the CL90 between the filament and the PSU filter. That way, the 1st filter cap. is not an initial dead short.
__________________
Eli D. |
|
|
|
1st March 2011, 06:29 PM
|
#3 |
|
diyAudio Member
Join Date: Dec 2009
Location: Orange County, California.
|
Thanks Eli,
Attached are three configurations of the PSU. The first is the way it is now. The second is with the CL-90 added after the filament. If I add it here keep or remove the 150 ohm before C1? The third was what I was asking about. The CL-90 added to the filament supply. I hope my objective was clear. I want the other tubes to heat up before the 5Y3 comes up to full output. The CL-90 is only rated a 120V. It's ok to put after the filament?
__________________
The Myth: A hand full of Tubes, Caps, Resistors and Iron and you have an Amp. The Reality: You have self induced Dementia. Newbie. |
|
|
|
2nd March 2011, 01:27 AM
|
#5 | |
|
diyAudio Member
Join Date: Apr 2004
Location: Plainsboro, NJ
|
Quote:
Yup, the middle schematic is what you need. Don't worry about the new CL90, as it will be just fine. The potential difference across the 2 leads is well below the 120 V. limit. If adding a thermistor doesn't slow things down enough, switch from the 5Y3 to a 6087 or a 6106. Those 2 are 5Y3 variants with cathode sleeves.
__________________
Eli D. |
|
|
|
|
2nd March 2011, 05:39 AM
|
#7 | |
|
diyAudio Member
Join Date: Dec 2002
Location: Netherlands
|
Quote:
and all your problems will be solved. You can use the empty hole in your chassis for a nice glowtube. amen |
|
|
|
|
2nd March 2011, 02:35 PM
|
#8 |
|
diyAudio Member
Join Date: Dec 2009
Location: Orange County, California.
|
Thank you Jaap. Some day I will try a SS PSU. For now I want to use tubes.
No chassis yet, it's still on a board. I want to try a VR tube at some point. I haven't designed an amp that could use one.
__________________
The Myth: A hand full of Tubes, Caps, Resistors and Iron and you have an Amp. The Reality: You have self induced Dementia. Newbie. |
|
|
|
| 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 |
| 90+90 volt rails | sakis | Solid State | 42 | 5th April 2011 01:38 PM |
| Which socket for a 5Y3?? | Richard Ellis | Tubes / Valves | 2 | 11th November 2008 04:41 PM |
| Sovtek 5Y3 Issues | Trout | Tubes / Valves | 17 | 12th November 2006 08:57 PM |
| replace 5y3 | ardan77 | Tubes / Valves | 5 | 15th January 2006 03:41 AM |
| Need Amp For 90-0-90 V DC | Drafance007 | Solid State | 15 | 12th October 2003 08:03 PM |
| New To Site? | Need Help? |
| Page generated in 0.10118 seconds (77.30% PHP - 22.70% MySQL) with 11 queries |
