HV Shunt Regulator PCB - Page 24

Josep · 11th March 2012, 06:54 AM

Quote:

Originally Posted by Algar_emi

Four PCB to Gilwintan
two to jormajj

Only 4 PCB left...
Let me know.

Thanks.

Hello,

Are the pcbs still available?

Thanks

pinnocchio · 12th March 2012, 03:50 AM

Did anyone compared it to Salas's SSHV2?

Algar_emi · 3rd May 2012, 11:36 AM

Hi. I have a new batch of PCB available. Quantities are limited. Send me a private email for details. Thanks.

Algar_emi · 4th May 2012, 02:55 PM

Pinnocchio you have mail. Orders are starting to fill in. I ordered just a small batch so if you want the PCB this is your chance.

pinnocchio · 4th May 2012, 02:58 PM

Sorry, I'll have to pass this time...

Starting a new project so my Tubes will have to wait some more...

Thanks for making this available to the DIY community

Do

Algar_emi · 14th May 2012, 07:54 PM

PCB received today. Only 18 left. Send me an email if interested. Thanks.

Algar_emi · 16th May 2012, 08:24 PM

Selling fast, only 12 boards left. Send me a private email if interested. Bye.

Algar_emi · 19th May 2012, 04:44 PM

All kits where shipped today. At the current rate of sale, I'm planning I'll have PCB available for only 2-3 more guys...

Algar_emi · 23rd May 2012, 08:57 PM

Only 10 PCB left...

lordvader · 3rd June 2012, 01:36 PM

Hi.
I was hoping someone could help me trouble shoot this circuit ?

The board passed the 15V only tests fine. When I apply the HV, things go pear shaped.

I followed the test steps.

When I power on, I get no voltage reading across R12 (it's supposed to be 250mV). Furthermore, adjusting R3 does not alter the VReg.
After poking about with my multimeter, I got the following readings at the opamp :
pin 2 = 7V (fine)
pin 3 = 1.2V (wrong !!!)
pin 6 = 0.9V (correct for mostfet shunt)
pin 7 = 10.6V (correct)

Checking other voltages, the voltages immediately after T2 are way low. RAW DC coming in about 300V, but after T2 the voltages are 65V.
What should the initial position of R3 be ? The documentation has no mention of a default value ...

A big but though ... For about 5 seconds after initial power on, everything looks like it's going to behave, with realistic voltages at the outputs, but then they suddenly drop.

If there's any more info you require, let me know.
I'm at my wits end !

12th March 2012, 03:50 AM	#232
pinnocchio Just DIY! diyAudio Member Join Date: Sep 2010 Location: Montreal	Did anyone compared it to Salas's SSHV2? __________________ PREAMPs : AMB α10 + JC-80 clone \| Balanced DCB1 \| AMPs: AMB β24 \| Aleph 5 \| Symef \| Hiraga \| ML-2 \| Fetzilla \| Telos 390 Clone DACs : TPA Buffalo II + NTD1 I/V \| TPA OPUS + IVY III Speakers : Jim Holtz Statements \| Astasia SD \| Tubasson Mark 2

4th May 2012, 02:58 PM	#235
pinnocchio Just DIY! diyAudio Member Join Date: Sep 2010 Location: Montreal	Sorry, I'll have to pass this time... Starting a new project so my Tubes will have to wait some more... Thanks for making this available to the DIY community Do __________________ PREAMPs : AMB α10 + JC-80 clone \| Balanced DCB1 \| AMPs: AMB β24 \| Aleph 5 \| Symef \| Hiraga \| ML-2 \| Fetzilla \| Telos 390 Clone DACs : TPA Buffalo II + NTD1 I/V \| TPA OPUS + IVY III Speakers : Jim Holtz Statements \| Astasia SD \| Tubasson Mark 2

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3rd May 2012, 11:36 AM	#233
Algar_emi diyAudio Member Join Date: Oct 2002 Location: Canada, Qc	Hi. I have a new batch of PCB available. Quantities are limited. Send me a private email for details. Thanks.

4th May 2012, 02:55 PM	#234
Algar_emi diyAudio Member Join Date: Oct 2002 Location: Canada, Qc	Pinnocchio you have mail. Orders are starting to fill in. I ordered just a small batch so if you want the PCB this is your chance.

16th May 2012, 08:24 PM	#237
Algar_emi diyAudio Member Join Date: Oct 2002 Location: Canada, Qc	Selling fast, only 12 boards left. Send me a private email if interested. Bye.

19th May 2012, 04:44 PM	#238
Algar_emi diyAudio Member Join Date: Oct 2002 Location: Canada, Qc	All kits where shipped today. At the current rate of sale, I'm planning I'll have PCB available for only 2-3 more guys...

23rd May 2012, 08:57 PM	#239
Algar_emi diyAudio Member Join Date: Oct 2002 Location: Canada, Qc	Only 10 PCB left...

3rd June 2012, 01:36 PM	#240
lordvader diyAudio Member Join Date: Mar 2002 Location: n/a	Hi. I was hoping someone could help me trouble shoot this circuit ? The board passed the 15V only tests fine. When I apply the HV, things go pear shaped. I followed the test steps. When I power on, I get no voltage reading across R12 (it's supposed to be 250mV). Furthermore, adjusting R3 does not alter the VReg. After poking about with my multimeter, I got the following readings at the opamp : pin 2 = 7V (fine) pin 3 = 1.2V (wrong !!!) pin 6 = 0.9V (correct for mostfet shunt) pin 7 = 10.6V (correct) Checking other voltages, the voltages immediately after T2 are way low. RAW DC coming in about 300V, but after T2 the voltages are 65V. What should the initial position of R3 be ? The documentation has no mention of a default value ... A big but though ... For about 5 seconds after initial power on, everything looks like it's going to behave, with realistic voltages at the outputs, but then they suddenly drop. If there's any more info you require, let me know. I'm at my wits end !