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Ideal Bridge second GB

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#43
tvicol said:
BSS123 is not the right choice here.
Click to expand...


Of course not, i only used the transistor types for the footprints. It's still only a rough draft.

Practical HV mosfets would be BSS127/dmn60h080ds for X10-X40 and STB24N60M6/ixfh26n60q/sihj240n60e/sihd240n60e for M1-M4.

The regulator is easy, as there is only a single one that works at 450v and only at 50-60Hz as the 1170 takes a lot more current at higher frequencies.


A small reminder when using with a typical valve center tapped transformer: the max output voltage drops by half. So much for my hopes to replace all the mercury rectifiers 🙂 Certainly not an issue with new designs which don't use a center tapped transformer.
 
#45
analog_sa said:
Of course not, i only used the transistor types for the footprints. It's still only a rough draft.

Practical HV mosfets would be BSS127/dmn60h080ds for X10-X40 and STB24N60M6/ixfh26n60q/sihj240n60e/sihd240n60e for M1-M4.

The regulator is easy, as there is only a single one that works at 450v and only at 50-60Hz as the 1170 takes a lot more current at higher frequencies.


A small reminder when using with a typical valve center tapped transformer: the max output voltage drops by half. So much for my hopes to replace all the mercury rectifiers 🙂 Certainly not an issue with new designs which don't use a center tapped transformer.
Click to expand...

Than you "decoded" most of my work. 😀
Looking forward to see your implementation.

Regards,
Tibi
 
#47
tvicol said:
Than you "decoded" most of my work. 😀
Looking forward to see your implementation.
Click to expand...




I would never have thought of such an obscure part like the 1170 without the information you shared. Not in a hundred years. Once the part is known, finding out how to use it is not that hard.


Sadly, it appears very hard to incorporate it in my existing projects as they all use choke input supplies with center tapped transformers and low dcr chokes. And relatively high voltages. I need new transformers in order to try the synchronous bridges out. Cannot see this happening any time soon.
 
#50
Yes, I already started to send invoices.
It took me some time to double check shipping and VAT to UK. So I want to make sure that UK will operate as is in UE till December 2020.

Thank you for your patience !
Many Saligny Standard orders will be shipped next week.
New boards for Saligny HVHF are somewhere in Germany and will arrive soon.

Regards,
Tibi
 
#51
Hi Tibi,

Payment sent.

I saw on your website Ideal Diode will be available soon. Will this be available in high voltage version? Just to replace a double diode tube rectifier with a center tapped transformer which is quite usual in a tube amplifier.
regards, Gábor
 
#52
Thank you, Gábor !

If the tubers are looking for such dual diode, to replace a double diode tube rectifier, than I may easily design one.
Write down your desired specs.

Ideal Diode mentioned on the website is to be used in solar panels and robotics.
This is able to withstand 100A with as little of 70mV drop off.

Regards,
Tibi
 

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#53
Hi Tibi. Not being an electronics expert I got a bit confused a while back with the various posts about centre tapped tranformers. Will your Saligny HV work in the power supply arrangement attached below? I think it'll be fine but thought I would check.

Assuming so, and if it isn't too late, can I amend my GB order for 1 * Saligny HV to increase the AC voltage to suit the schematic (240VAC).

Sorry to be a nuisance but I decided to build something different to my original plan.

Thanks
 

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#56
tvicol said:
If the tubers are looking for such dual diode, to replace a double diode tube rectifier, than I may easily design one.
Click to expand...


As mentioned previously I think this presents some serious issues.

Typically, centre tapped transformers with an output voltage of up to 400v per tap are used. Or 800v at the diodes anodes.

In case of a choke input supply the input circuit needs to deal with a kV+ initial voltage spike as well.

Gave up. Too much of a challenge for me.
 
#58
As I'm getting older (51 😀 ), I like challenges more and more, this make me feel still young. 🙂
I'm in.

On other hand, after Saligny HVHF you need to have a capacitor, at least 47uF, in order to ensure stability of internal regulators. Together with LC filter this will form a CLC. I'm using one right now in His Master's Noise phono PS.

Regards,
Tibi
 
#59
A lot of "tubers" are deeply convinced in the superiority of choke input. There is also the issue of having a ceramic cap at such an audible position...external power supply looks like a much better solution. Besides "tubers" are used to the need of a heater supply 🙂
 
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