Hello all,
I still have plenty of pairs of THT and SMD rectifier pcbs.
I have run out of LT4320 + CRC PSU PCB. If there is still some requirement , I can place an order for 1 more batch.
regards
prasi
PS To, Dan K, Best is try without snubbers. I think you will notice a definite improvement over conventional rectifier PSU
I still have plenty of pairs of THT and SMD rectifier pcbs.
I have run out of LT4320 + CRC PSU PCB. If there is still some requirement , I can place an order for 1 more batch.
regards
prasi
PS To, Dan K, Best is try without snubbers. I think you will notice a definite improvement over conventional rectifier PSU
this OLFA mat seems to be very popular. unfortunately in India there are knockoffs that aren't self healing.
Hello all, Can someone please direct me to the post where it's explained why one of these rectifiers can't be used by itself to supply a power amp from a single transformer secondary? I've got a single centre tapped traffo and I was hoping to use one of these with the centre tap blanked off. I've not had much luck when using STP130N8F7's. The amp powers up and bias's correctly but as soon as any load is applied the negative rail voltage drops to zero and the associated Mosfets go open. Thanks.
The amp is a Bedini 25/25. 35Vac across the traffo outputs and +/- 21V at the rails.
The amp is a Bedini 25/25. 35Vac across the traffo outputs and +/- 21V at the rails.
Hi Prasi -
Once again, thank you!
I am getting ready to assemble my boards. I know it is a pain to rearrange things, and this may have been mentioned before without me noticing.
In what I think is the latest revision to your THT boards, you've re-routed the traces for Q4, which does not correspond to the excellent renderings in post #765. Thus, Q4's alignment now "matches" Q2. I saw this immediately on the boards b/c they note the proper orientation on the silkscreen, and I checked with a DMM. However, this may trip up some builders.
If it is of limited trouble, could I suggest that post #1 be updated to point to a current rendering. Again, I know this might seem silly, but it may help out another builder.
Patrick
Once again, thank you!
I am getting ready to assemble my boards. I know it is a pain to rearrange things, and this may have been mentioned before without me noticing.
In what I think is the latest revision to your THT boards, you've re-routed the traces for Q4, which does not correspond to the excellent renderings in post #765. Thus, Q4's alignment now "matches" Q2. I saw this immediately on the boards b/c they note the proper orientation on the silkscreen, and I checked with a DMM. However, this may trip up some builders.
If it is of limited trouble, could I suggest that post #1 be updated to point to a current rendering. Again, I know this might seem silly, but it may help out another builder.
Patrick
Hi Patrick,
Good point. It was my laziness and rendering takes long time (I had an old i3 laptop, slower than snail then) . So didnt do latest rendering.
I am attaching here correct renders for THT rectifier version.
regards
prasi
Good point. It was my laziness and rendering takes long time (I had an old i3 laptop, slower than snail then) . So didnt do latest rendering.
I am attaching here correct renders for THT rectifier version.
regards
prasi
Attachments
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In This Post I tried to explain what I found to be why it doesn't work with center tapped secondary in constructing a split rail PSU.....it is because the bottom MOSFETs stay conductive most all the time during the AC cycle instead of turning on/off in sync with the top MOSFETs. I attempted a circuit trying to make it to work but it seems too much complexity would have to be involved in order to get it work properly under all possible conditions.
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Hi Prasi -
You are very humble. I truly appreciate all the time and support you provide. It makes DIY projects much more approachable for beginners like myself.
With thanks!
Patrick
I can use it in a lower voltage 25V AC L'Amp, of course.
I want to also use it in a 2SK180 project, having 65 V AC, so that is a no-go then
. Are there any changes that can be made to accomodate higher input??
Tibi may be able to help with higher voltage solution
3rd group buy for Synchronous Bridge aka Ideal Bridge
3rd group buy for Synchronous Bridge aka Ideal Bridge
Hi prasi. Can you remind me what current the smd version is good for? I'm planning to use them for a class A amp project but that'll pull less than 5A so, IIRC, not a problem.
Thanks
Thanks for the link, the Saligny Bridge They are expensive. .
I have transformers with a 65 / 70 V secondary for 65-75V DC.