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Ideal bridge rectifier GB
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Old 2nd May 2019, 09:10 AM   #91
jan.didden is offline jan.didden  Europe
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Quote:
Originally Posted by tvicol View Post
This is to let you know that I'm designing another two ideal bridges.
One will be dedicated to low voltage, small power applications, with very small footprint 6x6 mm and will handle around 8A continuous.
Second one will be able to handle voltages up to 200V and 35-40A continuous.
Synchronous rectification is the next step in audio (and not only audio), it brings sonic improvement in almost any appliance.



Regards,
Tibi
Hello Tibi,

Good plan!

But 200V is just about in between SS and tube. If you could bring that up to 400V or more you'd catch the tube crowd as well! Just 1A would be enough!

Jan
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Old 2nd May 2019, 09:19 AM   #92
tvicol is offline tvicol  Europe
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Hi Jan,

For tube fans I'll have discrete ideal diodes that will handle up to 450V at 6A.
Hope the end of soft tube rectification is near.

Regards,
Tibi
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Old 2nd May 2019, 09:26 AM   #93
jan.didden is offline jan.didden  Europe
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Great! You have a link to those?

But remember: there will always be people that think that soft, crappy rectification sounds better ;-)

Jan
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Old 2nd May 2019, 09:31 AM   #94
tvicol is offline tvicol  Europe
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Discrete diodes are already under test and I'll post some pictures soon. Other two designs are more challenging.

Regards,
Tibi
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Old 2nd May 2019, 10:18 AM   #95
dhaen is offline dhaen  Europe
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Thank you Tibi, received mine

JD
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Old 2nd May 2019, 10:16 PM   #96
JOIMONF is offline JOIMONF
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Ideal bridge rectifier GB
Litlle bit higher voltage is very welcome. I was concerned that current production Saligny can't reach my desired 80vdc. for field coil power supply drivers.
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Old 3rd May 2019, 12:15 AM   #97
Destroyer OS is offline Destroyer OS  United States
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What does half green mean in the google doc?
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Old 3rd May 2019, 07:12 AM   #98
tvicol is offline tvicol  Europe
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Thank you JD for delivery confirmation and GB subscription !

Joimonf, next ideal bridge will handle 200V @ even higher currents, while been very compact.

Destroyer OS, light green mean that goods are packed but not yet shipped.
Expect to have many of them shipped today.

Regards,
Tibi
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Old 3rd May 2019, 10:11 PM   #99
nautibuoy is offline nautibuoy  United Kingdom
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Quote:
Originally Posted by tvicol View Post
next ideal bridge will handle 200V @ even higher currents, while been very compact.

Sounds interesting!
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Old 4th May 2019, 09:31 AM   #100
tvicol is offline tvicol  Europe
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Q&A session


Q. May I replace my bridge directly with Saligny without any modification ?
A. Yes, you can. However you must take care on min and max ac voltage.

Q. What is minimum and maximum ac voltage that Saligny will work ?
A. Min = 6Vac and Max = 51Vac

Q. How I can test if my Saligny is working or not?
A. Saligny will add at least 1,4Vdc after rectification. In order to be sure, measure dc with your diode bridge - and note down - and after Saligny is in place.
For example: If with diode bridge you have after rectification 9Vdc, with Saligny you’ll have at least 10,4Vdc.

Q. Why my regulator is hot after diode bridge replacement with Saligny ?
A. The power loss over your old bridge is now “transferred” over your regulator.
For example: If your regulator deliver under full load 1A, now will dissipate more power which is equal to aprox. 1,4V x 1A = 1,4W
You can avoid this by proper adjusting secondary voltage at your transformer, or set your regulator to deliver a higher output voltage.

Q. Can Saligny handle hight current dynamic range ?
A. Saligny is best here, as will act like a miliohm resistor. Entire transformer power is delivered to load with minimal loss.
In comparison a diode bridge will limit current and power delivered due power high loss over each diode.

Q. Which are audio improvements I may expect from synchronous rectification.
A. Better and dipper bass response. Improved macro dynamics. Less noise.

Regards,
Tibi

Last edited by tvicol; 4th May 2019 at 09:33 AM.
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