The simplistic Salas low voltage shunt regulator

Salas · 2010-04-12 5:55 pm

They better ask me before proceeding to something final, because there are details and options.

merlin el mago · 2010-04-13 11:02 am

Rs

@Salas

I mind the BC550 are fryed because the reg. only gives 60VDC & can't lower the voltage so I will change Q3 for BC546B and the resitors R2, R3, R5, trimmer R6 & R8 & I will let you know.

GuidoR · 2010-04-13 11:17 am

Salas said:
They better ask me before proceeding to something final, because there are details and options.

It's a looong way.
This will be - for me - the 3rd or 4th version of a PCB (I'm a toner-transfer guy) based on your schematics, all working flawless.
But that's another story, the v1.2 (as correctly Massimo pointed out, as per post 1893) need a more attentive job, not only a matter of not crossing lines as I previously did. Anyway, thank you in advance for your kind offer (and for sharing your fantastic job!)

Guido

lauret · 2010-04-13 12:50 pm

crt said:
Almost finish my Lastest Layout (D-1 with Salas Shunt Reg in one board).
PCB is Ready for now.

An externally hosted image should be here but it was not working when we last tested it.

How is the progress with the D1 with the shunt reg? Will there be a GB?

Salas · 2010-04-13 2:09 pm

That D1 is a project of a member, only reported here.

jameshillj · 2010-04-13 3:22 pm

Hi Salas, lauret,

Would you have any more info/ link to where this "D1 + Salas Shunt Reg" can be found, please?

lauret · 2010-04-13 3:24 pm

jameshillj said:
Hi Salas, lauret,

Would you have any more info/ link to where this "D1 + Salas Shunt Reg" can be found, please?

Click on the arrow in the crt quote to jump to the post from crt.

jameshillj · 2010-04-13 3:37 pm

Ah, so simple - me so dumb - thanks lauret.

Audiohifi · 2010-04-13 6:05 pm

Hi All

Is a long and fantastic good thread. I have been browsing at the attachments
Please tell me how to set the CCS with leds and with transistors.
200mA is to much for my need
This my first post in this thread
Thanks to all

Audiohifi

merlin el mago · 2010-04-13 8:59 pm

Rs

Changed all components for Rs, leds lit, voltage is 58 VDC but can't decrease the voltage with the trimpot, mosfets are cold, I'm afraid that are frieds, any other idea to solve the problem?

merlin el mago · 2010-04-14 8:02 pm

Rs

Thanks Salas, solved the Rs problem, now the reg. is going on perfectly, a photo just for fun:

An externally hosted image should be here but it was not working when we last tested it.

Salas · 2010-04-14 8:10 pm

Nice. You will shorten the sense coax RG179 later I guess. I see excess.

Salas · 2010-04-14 8:13 pm

Audiohifi said:
Hi All

Is a long and fantastic good thread. I have been browsing at the attachments
Please tell me how to set the CCS with leds and with transistors.
200mA is to much for my need
This my first post in this thread
Thanks to all

Audiohifi

Read a bit from the start. Its been explained many times. Rule of thumb for the 3 leds ccs schematics I=2.2V/Rset very roughly.

merlin el mago · 2010-04-14 8:32 pm

Rs first impressions

Wow, really it's a great step forward the Rs setup, it's like you drive a formula 1 car, all is plenty of extra power, fast, dynamic, very, very clean.

I really recommend fo everybody to do the up-grade to Remote Sense, it's easy to do & you get a lot of more "good sound" than the work done.

Congratulations Salas & thanks again to share & help us.