LT4320 based active rectifier

[ernesternest]

There seem to be more buyers than builders

Usual thing. Projects and
PCBs have to ripe.

 

[fab]

Assembled the ideal bridge modules but not tested yet

Fab

 

[nounouchet]

Hi Lo_Tse


I haven't mounted my rectifiers yet but I bought CSD19531Q5A MOSFETs.

 

[TungstenAudio]

I have assembled a pair of THT modules using IPP029N06 MOSFETs. These will be installed in my M2x amplifier and tested over the next couple days.
There have been several posts about which MOSFETs to use. Choice depends on the secondary voltage of your power transformer, and how much current your amp will draw.

 

[Rinman77]

Request 6 x THT

Hello Prasi,
I will send you PM with Paypal address for 6 THT if they are still available.
Thanks!
Ron

 

[Lo_Tse]

@Tungstenaudio and nounouchat

Thanks folks. Just want to see what MOSFETs did people choose and how they like it. I don't have a project that needs the rectifier yet. So I am taking my time to build.

Regards,

 

[Lo_Tse]

Assembled the ideal bridge modules but not tested yet

Fab

The assembled modules look great!!

Regards,

 

[prasi]

Assembled the ideal bridge modules but not tested yet

Fab

Hello Fab,
The build looks great. All the best for testing and success.
regards
Prasi

 

[fab]

Thanks for kind words!
As you can see I have found a way to fit them into a standard psu pcb within the area planned for the normal diodes but active rectifier board installed vertically

Thanks Prasi for doing this pcb layout and handling this group buy like a champ!

Fab

 

[Botte]

I have my boards.

Thanks prasi!

 

[prasi]

I have my boards.

Thanks prasi!

you are welcome! all the best for your build. BTW, very nice speakers in the background!.
regards
Prasi

 

[lucser]

Confirmation

Hi,

Boards well received.
Now looking for free time for building

Thanks

 

[Rinman77]

Hi,
Boards received.

Thanks,
Ron

 

[TungstenAudio]

I have had the 4320 rectifiers in my M2x (clone of First Watt M2) for a few days. They replaced a set of FEP30 diodes. Given an Antek AS-4218 as the power transformer and 1.31 Amps class A bias current, the rail voltage on the channel boards increased from +/- 22.4V to +/- 23.6V. Ripple on the supplies decreased enough to be less noticeable with the experimental input stages that I’ve been working with for a while. (They have a lower PSRR than usual.) Measured ripple was 24mV. Switching to a pair of my favorite tweaked Mountain View input stages let the new power supply really show its quality. My M2x now is on equal footing with the Aleph J and its dual-mono power supplies.

 

[prasi]

Thank you TungstenAudio for posting your progress.

 

[jean-paul]

Just ordered the parts for 2 x SMD and 1 x TH. I am curious!

 

[nounouchet]

Hi Prasi,


I'm finally going to make my rectifiers.
I have 4 LT4320 in MSOP format, do you have MSOP adapters?


Thanks
nounouchet

 

[prasi]

Hello Nounouchet,
I do not have the MSOP adapters.
However I have posted the design here.

LT4320 based active rectifier

You may order the PCBs from any of the board houses.

regards
Prasi

 

[nounouchet]

Ok thanks

 

[Hicoco]

Ok thanks

I plan this month to order PCBs for my DIY project and i will order cpl of Prasi design MSOP adapters. if interested for cpl MP..( you pay just for shipping )