Voltage doubler, tripler or other creative solution? - diyAudio
Go Back   Home > Forums > Amplifiers > Power Supplies

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 28th March 2010, 12:10 PM   #1
markusA is offline markusA  Sweden
diyAudio Member
 
markusA's Avatar
 
Join Date: Dec 2009
Location: Gothenburg
Blog Entries: 1
Default Voltage doubler, tripler or other creative solution?

My project is slowly coming togeather.
It's a modular DAC build.
DAC -> LDR attenuator -> Circlotron tube buffer

I'll be needing 7-15VAC, 22-24VDC, 6.3V and (2x) +/- 200VDC.
The (2x) AN-1T150 will be enough to give me the +/- 200VDC in a floating psu.
The other secondaries will give med some 6.3V which will take care of the heaters.
All in all I'll have 3x6.3VAC left after powering the buffer.

Do you have any creative solutions for attaining 7-15VAC and 22-24VDC?

Perhaps I could connect two 6.3V secondaries in series for 12.6VAC?
Maybe build a voltage tripler for 26,5VDC and then regulate it to 22-24V?

What do you think?

Transformers need to be shielded, take up a lot of space and are costly. I'm looking for alternatives to adding more trafos?
  Reply With Quote
Old 28th March 2010, 06:11 PM   #2
Minion is offline Minion  Canada
diyAudio Member
 
Join Date: May 2006
Location: Cowican Bay , vancouver island
Well 12.6vAC will give you close to 17vDC , so with a Doubler you can get over 30vdc that can be regulated to 24v DC , Remember you need to use a lot more capacitance for filtering in a Voltage doubler supply , over double the capacitance ......


Cheers
  Reply With Quote
Old 28th March 2010, 06:18 PM   #3
markusA is offline markusA  Sweden
diyAudio Member
 
markusA's Avatar
 
Join Date: Dec 2009
Location: Gothenburg
Blog Entries: 1
Actually I see I made a small typo.
I think it should be quadrupler not tripler.

Minion> I need both 7-15VAC and 22-24VDC.

Playing around with numbers I thank heaven for the low voltage application. 25V caps are fairly cheap even if they are large. (10000uF)
  Reply With Quote
Old 28th March 2010, 07:11 PM   #4
Minion is offline Minion  Canada
diyAudio Member
 
Join Date: May 2006
Location: Cowican Bay , vancouver island
You said you could make 12.6v AC right ?? Isn"t that between 7-15v AC ?? You can use the same 12.6vAC supply for the 7-15v AC and the 24vDC with the Voltage doubler .....
  Reply With Quote
Old 28th March 2010, 07:30 PM   #5
markusA is offline markusA  Sweden
diyAudio Member
 
markusA's Avatar
 
Join Date: Dec 2009
Location: Gothenburg
Blog Entries: 1
Hmm, I never thought of that. I kind of assumed every psu should have it's own secondary on the trafo.

Following the same logic one could connect the 3 6.3V secondaries in series and get 18.9VAC, rectify it and have roughly 26.5V?
  Reply With Quote
Old 28th March 2010, 07:41 PM   #6
Minion is offline Minion  Canada
diyAudio Member
 
Join Date: May 2006
Location: Cowican Bay , vancouver island
Hi, I don"t see why not , I have used a single winding to get several voltages before , have even used the 12.6v AC heater tap through a Voltage Tripler to power the Plate of a Tube (starved plate) and the heaters , have used the Unregulated Power for a Poweramp and regulated it down for the Opamps .... as long as there is enough current to power all circuits and there are no ground loops there shouldn"t be a problem ....


Cheers
  Reply With Quote
Old 28th March 2010, 07:49 PM   #7
markusA is offline markusA  Sweden
diyAudio Member
 
markusA's Avatar
 
Join Date: Dec 2009
Location: Gothenburg
Blog Entries: 1
The current capability is a non issue, each 6.3V secondary is good for 3A.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Need help with voltage doubler Lingwendil Power Supplies 6 22nd April 2009 12:15 AM
Voltage Doubler jwatts Tubes / Valves 3 2nd January 2009 12:13 AM
Voltage doubler/tripler circuits diablo Power Supplies 6 4th October 2005 04:43 AM
voltage-tripler diode values?? rockstudio Power Supplies 4 17th June 2005 05:58 AM
Voltage doubler Baard Solid State 28 17th January 2005 04:46 AM


New To Site? Need Help?

All times are GMT. The time now is 02:44 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2