What are you looking for (Volts, amps, how much ripple is tolerable, etc)? What kind of thoughts or ideas do you want to hear? Depending on your replies and needs your post could perhaps elicit more responses in the “Power Supplies” Forum than here.
If you are just looking for a “good” HV regulator to power a tube amplifier you may want to look at Jan Didden’s HV regulator.
Group Buy for Jan's high voltage regulator
If you are just looking for a “good” HV regulator to power a tube amplifier you may want to look at Jan Didden’s HV regulator.
Group Buy for Jan's high voltage regulator
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I'm interested, too... Looking for something LDO, 3A peak, 300-330V adjustable fed from 330V. I don't mind if it's switching, either.
I was on mobile when I wrote that
Here is the thread, post 15 is a B+ voltage regulator. I bought a kit of him and is works amazing
V4lve lover's free gerbers thread.
Here is the thread, post 15 is a B+ voltage regulator. I bought a kit of him and is works amazing
V4lve lover's free gerbers thread.
Appreciate responses- but to be more specific...
Can regulating B+ provide better Bass response... adding current when needed?
Can regulating B+ provide better Bass response... adding current when needed?
Short answer: No.
Every regulation slows down things compared to an unregulated supply.
If you want more current, choose a different circuit with a better PSU and a tube which has more power.
Every regulation slows down things compared to an unregulated supply.
If you want more current, choose a different circuit with a better PSU and a tube which has more power.
You might find some improvement in the bass with a shunt regulator. The power supply has to be built to supply the extra current to run it though. . . . and the degree of benefit probably depends on the circuit and the regulator.
There's a lot of info in a general search , a lot concentrated here .
For tube amp B+ voltages there are some kits available , the highest voltage limit in a kit I've seen is 600VDC on K&K Audio's site.
There's a lot of info in a general search , a lot concentrated here .
For tube amp B+ voltages there are some kits available , the highest voltage limit in a kit I've seen is 600VDC on K&K Audio's site.
Maybe my T-reg fits the bill?
T-reg HV regulator | Linear Audio NL
Adjustable with a single resistor to 600VDC, and a single resistor current limit adjustment to 400mADC.
Jan
T-reg HV regulator | Linear Audio NL
Adjustable with a single resistor to 600VDC, and a single resistor current limit adjustment to 400mADC.
Jan
Personally i think a B+ regulator makes the most sense in class A or SE amplifiers.
I have a friend that swears by B+ regulation in SE amplifiers. He mostly uses a control board with EF184 and 85A2 that i developed for him with either 6080 or 6336 as the pass tube.
I have a friend that swears by B+ regulation in SE amplifiers. He mostly uses a control board with EF184 and 85A2 that i developed for him with either 6080 or 6336 as the pass tube.
There are many ways to skin this cat, yes. But I think the OP wanted a solid state solution.
And in my experience, any (tube) amp that has limited power supply ripple rejection (PSRR) benefits from a well-regulated supply. I would look more to the specific implementation than to the amplifier class as such.
Jan
And in my experience, any (tube) amp that has limited power supply ripple rejection (PSRR) benefits from a well-regulated supply. I would look more to the specific implementation than to the amplifier class as such.
Jan
Yes, preferably solid state.
Good circuits here to research- I'll add in a design. When first PC board is designed, I add as many options as can fit for evaluation during testing. Revised PC board has results of testing, maybe final option added such as UL or no UL for OT upgrade down the road.
Thanks,
Jim
Member
Joined 2009
Paid Member
3A x 600V = 1.8kW wow, what kind of amp do you have with this level of surge ?
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B+ is only 300V in my case,
3A would include a margin as that would be the maximum peak power that would be rare in practice.
It's a PP 6P45S triode connected - they can and will peak 1.5A each channel at full blast if there's a transient... On average, the current stays below 1A though, and idle is 80mA per tube. The load is ~1k plate to plate...
3A would include a margin as that would be the maximum peak power that would be rare in practice.
It's a PP 6P45S triode connected - they can and will peak 1.5A each channel at full blast if there's a transient... On average, the current stays below 1A though, and idle is 80mA per tube. The load is ~1k plate to plate...
If you need the transient response just put 1Kuf at the output of a normal 6080 regulator and voila, most of the surge and peak current will be delivered by the output capacitance.
Do you see this building, right across the street? It was a former power station for this district. Now I use it as a PSU for tube amps....
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Audio Note M7 Line Preamp
This is a very basic but reliable regulator. You can change component values for different voltages. Make sure the MOSFET you use has internal protective diodes or add them to this circuitry. The IRF420 is just one example, there are lot’s of better MOSFET’s available.
I built several using various MOSFET’s, one of them does 600 VDC @ 500 mA (continuous load...).
Regards, Gerrit
This is a very basic but reliable regulator. You can change component values for different voltages. Make sure the MOSFET you use has internal protective diodes or add them to this circuitry. The IRF420 is just one example, there are lot’s of better MOSFET’s available.
I built several using various MOSFET’s, one of them does 600 VDC @ 500 mA (continuous load...).
Regards, Gerrit
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