Author Topic: Voltage Multipliers (for our tube projects...)  (Read 141941 times)

Renegadrian

Voltage Multipliers (for our tube projects...)
« on: February 07, 2009, 10:44:28 AM »
I'd like to make a new topic, did a quick search but there is not a similar one...
So I think it's quite useful to have all the voltage multipliers posted here...

As I wrote in the Valvy topic, here --> http://www.diystompboxes.com/smfforum/index.php?topic=63479.msg597319#msg597319
I wanted to try this circuit here --> http://w1.859.telia.com/~u85920178/power/vconv_01.htm
with 4 trannies and a low number of caps and diodes...
It works, altough I didn't put this circuit in a tube pedal like the valvy yet, I built it successfully, now I got 49.8V from the 14V I got from my unregulated wall wart - did I tell you I finally got a DMM?!  ;D

I believe it will find a good use in a tube project!!!
Here it is, mine has just a stage less to get that 48V

« Last Edit: February 07, 2009, 10:51:34 AM by Renegadrian »
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frequencycentral

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Re: Voltage Multipliers (for our tube projects...)
« Reply #1 on: February 07, 2009, 10:51:05 AM »
Nice! Well done - and I'm eager to see what you marry it up to (hint: try powering your Valvy's plates from it - no more gain but a massive boost!).

And you finally got a DMM!
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Renegadrian

Re: Voltage Multipliers (for our tube projects...)
« Reply #3 on: February 07, 2009, 10:55:36 AM »
Yes Rick, I think my next Valvy will have this one inside...

Done an' workin'=Too many to mention - Tube addict!

Ripthorn

Re: Voltage Multipliers (for our tube projects...)
« Reply #4 on: February 07, 2009, 12:28:19 PM »
That looks like a great, cheap solution (though I don't know what the trannies cost).  I am going to have two tube projects going on soon, so it will be interesting to see what power solution will work best.
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Renegadrian

Re: Voltage Multipliers (for our tube projects...)
« Reply #5 on: February 07, 2009, 05:11:08 PM »
I bought the trannies @ Banzai online store - 0.14 euro each, so 0.56 euro of trannies...
Done an' workin'=Too many to mention - Tube addict!

punkin

Re: Voltage Multipliers (for our tube projects...)
« Reply #6 on: February 07, 2009, 05:44:35 PM »
 ;D
LOL!!! I've seen some of your work and the sheer number of projects I'm amazed that you NOW have a DMM  ;D

By the way, the power booster...nice. Any idea how much current it will supply?
Ernie Ball Music Man - JPM, THD Univalve, Grace Big Daddy, PepperShredder, BSIAB2, FireFly Amplifier.

Renegadrian

Re: Voltage Multipliers (for our tube projects...)
« Reply #7 on: February 07, 2009, 05:53:38 PM »
Quote from: punkin
;D
LOL!!! I've seen some of your work and the sheer number of projects I'm amazed that you NOW have a DMM  ;D
Yeah, Just because I found one at Porta Portese from a chinese...4 euro and that's it!
Luckily I didn't need one before, and even now it's not mymain tool, but you know it's useful in situations like that!!!
I an be sure that this multiplier works and how much voltage I do get!!!

Quote from: punkin
By the way, the power booster...nice. Any idea how much current it will supply?
Actually you can read all at the link I posted above...
Done an' workin'=Too many to mention - Tube addict!

Renegadrian

Re: Voltage Multipliers (for our tube projects...)
« Reply #8 on: March 19, 2009, 12:12:23 PM »
Hello everybody...Found this googling around and thought it would be helpful to someone...
regulated high voltage power supply that runs from a 9V battery
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frequencycentral

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Re: Voltage Multipliers (for our tube projects...)
« Reply #9 on: March 19, 2009, 01:06:11 PM »
Hello everybody...Found this googling around and thought it would be helpful to someone...
regulated high voltage power supply that runs from a 9V battery

Output 400v to 1000v !!!!!!!!
http://www.frequencycentral.co.uk/

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MohiZ

Re: Voltage Multipliers (for our tube projects...)
« Reply #10 on: March 23, 2009, 02:41:42 PM »
I can't get this thing to work. The 50hz oscillations explained on the page aren't happening. What could be wrong? The schematic on the page looks to me like it's connected differently from the component overlay and pcb. Which of these is right?

Renegadrian

Re: Voltage Multipliers (for our tube projects...)
« Reply #11 on: March 23, 2009, 02:46:19 PM »
which schem you mean???
Done an' workin'=Too many to mention - Tube addict!

MohiZ

Re: Voltage Multipliers (for our tube projects...)
« Reply #12 on: March 23, 2009, 03:59:39 PM »
Renegadrian, I mean the schematic on the page you pasted in your first post. But never mind, they are the same - I just interpreted it wrong. But still, I can't get it to work  :( Are the negative treminals of the 10u caps connected together? Mine are.

Renegadrian

Re: Voltage Multipliers (for our tube projects...)
« Reply #13 on: March 23, 2009, 06:39:17 PM »
Yes, Jouni, if you downloaded the full zip file you have the pcb, where you can clearly see a line that connects the emitters of the 547/557 and the - of the 10µF caps. If it doesn't work, that's not the reason...
Done an' workin'=Too many to mention - Tube addict!

Minion

Re: Voltage Multipliers (for our tube projects...)
« Reply #14 on: March 23, 2009, 06:53:53 PM »
here is the section from a paia kit that makes 45v from a 15v dc and uses a cmos hex inverter and is used in the paia kit to power a 12ax7 tube ....




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Renegadrian

Re: Voltage Multipliers (for our tube projects...)
« Reply #15 on: March 26, 2009, 04:19:26 PM »
Polish anyone?! What is written here??? Does it work with 12V AC, not DC? Can it be useful for our projects?!



Taken from HERE
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snap

Re: Voltage Multipliers (for our tube projects...)
« Reply #16 on: March 26, 2009, 05:18:28 PM »
AC.

frequencycentral

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Re: Voltage Multipliers (for our tube projects...)
« Reply #17 on: March 26, 2009, 05:24:32 PM »
AC.

Yeah the inputs are AC, it would probably take an in-phase and an out-of phase input from a NPN/PNP complementary output pair like the one Adriano linked to in the first post.
http://www.frequencycentral.co.uk/

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Ben N

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Re: Voltage Multipliers (for our tube projects...)
« Reply #18 on: March 26, 2009, 05:42:43 PM »
That looks like a great, cheap solution (though I don't know what the trannies cost).  I am going to have two tube projects going on soon, so it will be interesting to see what power solution will work best.
I'm sure the electros are more than the trannies. Does this handle higher current demands than a charge pump?

frequencycentral

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Re: Voltage Multipliers (for our tube projects...)
« Reply #19 on: March 28, 2009, 03:24:49 PM »
I've been gathering the parts (and the guts) for this SPMS: http://www.ledsales.com.au/kits/nixie_supply.pdf

I just finished breadboarding and testing it. I'm able to dial in voltages from 99 volts to 199 volts with the trimpot.  8)

After a while of running with no smoke/fumes/flames I decided to hook it up to my Sub Zero PP tube amp, the two work perfectly together, I'm really pleased. Under load the SPMS dropped from 195 volts to 185 volts. There's no sign of sag or compression.

I've made a document with the schematic, pinouts for the semiconductors and the part number for the inductor I used:

http://www.frequencycentral.co.uk/

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