Solid state HT regulator??

[JDeV]

Anybody got a design, that I may use, for a solidstate high voltage regulator to use for pre-amp? (320V dc)

Also, where can I find VB408 or HIP5600 regulator IC's?

 

[316a]

Hello ,
How about a hybrid ? I'm having good results from a stack of current souce fed 85A2 with a TIP50 darlington follower on top

cheers

316a

 

[kathodyne]

hi!,

i have a few books were they use regulated hv...i could copy these schematics for you...
they use bd140

if you like, say so....

 

[JDeV]

hi!,

i have a few books were they use regulated hv...i could copy these schematics for you...
they use bd140

if you like, say so....

Would appreciate it. Thanx

Reason why I don't want a tube version, lack of space inside box for additional tubes/trafo's.

 

[JPS]

Have a look.

http://geek.scorpiorising.ca/Geek-0.html


regards

 

[Tubes4e4]

Hi,

Also, where can I find VB408 or HIP5600 regulator IC's? [/B]

AFAIR VB408 is out of production and definitely is unobtanium over here in Germany.

Tom

 

[jeapel]

hi

check my 300volt regulator

www.loginnovation.com/jeapel

-the RC time 47k and 22 uF give a long RC for
a very good filter out the ripple

-for one step better you can boost 22uF to 50 to 100uF

-i don t like hv regulator with IC because IC work with
negative feedback and feedback==possibly voltage
overshoot and possibly unstable

-the source follower regulator work very well and
is fulll proof stable

bye

 

[JDeV]

Good stuff

Thanx to you all.

 

[jeapel]

hi i forgot

-after the no hum from your 320 volt the next step
will be the hum reduction from your heaters

-maybe 100ohm to ground like me

-maybe a +v polarisation on heaters

 

[amperex]

The TL783C is a three terminal IC type regulator that was designed for high voltage. I do not remember the specs, but have 100-150 in stock.

Update: This IC regulator (positive output) has a 125 VDC rating. I understand it can perform with a difference of 125 VDC or be floated up in voltage above ground for a differential of 125 VDC input to output.

In other words, it should perform well with an input of say 350 VDC & an output of 250 VDC.

 

[JDeV]

check my 300volt regulator

www.loginnovation.com/jeapel

-the source follower regulator work very well and
is fulll proof stable

I like this 1, work well indeed

Got one question:
My supply is 330v dc and I need 300v on output, after regulation.
What component values must I change - to what?
The gate ref. zener maybe?

 

[jeapel]

hi

the regulator should be work for you but if i follow
my design rules :

1-vin=330v is it with the load(tube circuit) connected
because vin-vout=30v and it s a minimum for my
otherwise change down your vout

2-normally i put 2 to 3ma on zener

3-in my case: zener current=(400-300)/47000=2.1ma

in your case: zener current=(330-300)/47000=0.6ma
it s working but a little too low

change the 47k for: (330-300)/.002=15kohm 1 or 2 watt

4-for good hum rejection my rc time=
47000*22uF=1sec.

change 22uF for maybe 66uF

15000*66uF=1sec.

good luck

 

[gingertube]

Look at this thread.
http://www.diyaudio.com/forums/showthread.php?s=&threadid=61831
This is a tried and proven design.
Cheers,
Ian