PS design for tube pre-amp

[tony Ma]

Hi there any one can help me design pre-amp tube

What the Pre-amp tube are 400V AC(100mA) and one two 12.6V AC(1A)

The transformer can supply 320V(100mA) and 0-18V(1A)

Tks

 

[DF96]

I assume you mean 400V DC at 100mA? That seems a lot for a preamp, and too much for your transformer. A 320V 100mA AC secondary will provide perhaps 40mA DC from a capacitor input PSU.

 

[nigelwright7557]

I designed a disco valve mixer and used 110VDC. 110VDC is safer to work with for a newbie but will still bite a bit.

Do you want valve rectification or solid state ?

 

[tony Ma]

@DF96 : Yes, the pre-amp input V are in DC

@nigelwright7557, I am guessing better with Valve rectification? What do you think?

To be honest I am just looking design that cheapest and very good PS (lol...)

Help me please.... I am learning a lot from this site

 

[Elvee]

If your figures are right, your transformer is about three times too small for that application

 

[tony Ma]

Any one?

 

[JMFahey]

What the Pre-amp tube are 400V AC(100mA)

How do you know your preamp needs 400V DC and needs 100mA current?

and one two 12.6V AC(1A)

"one two?"
How many and which tubes does your preamp use?

Hint: a schematic would be useful.

 

[tony Ma]

How do you know your preamp needs 400V DC and needs 100mA current?

This is what i got from the user manual


"one two?"

Meaning there is also one output (from PS PCB) and going to TWO (in for Pre-amp PCB)


How many and which tubes does your preamp use? (6 Pcs. this is clone of JP200)

Hint: a schematic would be useful.

http://www.diyaudio.com/forums/power-supplies/230726-there-any-thing-wrong-design.html

 

[JMFahey]

How do you know your preamp needs 400V DC and needs 100mA current?

This is what i got from the user manual

Sorry but which user manual?
On your OP you refer to

help me design pre-amp tube

How can you have a user manual for something that's not yet designed?

How many and which tubes does your preamp use? (6 Pcs. this is clone of JP200)

"6 pcs" ..... of *what*?
Don't know what a JP200 is, that's why I asked a schematic of what you are building.

Hint: a schematic would be useful.

http://www.diyaudio.com/forums/power-supplies/230726-there-any-thing-wrong-design.html

Sorry, no Preamp schematic to be found there.

 

[tony Ma]

I have this pre-amp as DIY kid from analog metric

My first experience building the kit

it was horrible the original kit that they have (a lot of hum)

so I decided to follow this guy Norbert R

Tube DIY Asylum

I change all the resistor, capacitor and sound become so amazing .... way better than original one

but I still have the problem with the Power supply. In Norbert R, he has PS200 ( http://analogmetric.com/download/Variable Tube Voltage Regulator PS200 User Manual.pdf ) and I have regular one ( HV400 Variable High Voltage Regulator Kit (100-300V 0.1A & 0-30V 5A)_Power Supply Kit_Analog Metric - DIY Audio Kit )

Well at that time I did not know much about which PS I should use and they send me the kit

here is the link for user manual
Pre-amp
Tube DIY Asylum

I hope this will clear up