Brian,
Yes, I suspect that may be the case. Its going to be a pain in the *** to ohm it out, and I hoped someone might have done it already. Seems kind of silly since the UCD is patented already, and this would be a board that requires the use of a purchased module.
The epoxy really does mess up moding in this very critical area so my thought is it just needs a new daughter board.
Mike
Yes, I suspect that may be the case. Its going to be a pain in the *** to ohm it out, and I hoped someone might have done it already. Seems kind of silly since the UCD is patented already, and this would be a board that requires the use of a purchased module.
The epoxy really does mess up moding in this very critical area so my thought is it just needs a new daughter board.
Mike
Potting is a great way to preserve intellectual property and they do this because while the UcD topology is patented their specific modulator circuit is not.
One downside to potting is the stray capacitance that it adds between all of the connections and that this capacitance can vary over temperature. This may not be a big deal with audio circuitry but it can be for other things. I know this from having to deal with potting and capacitive sensing circuitry at work...
I'd be interested in knowing exactly what kind of potting it is.
One downside to potting is the stray capacitance that it adds between all of the connections and that this capacitance can vary over temperature. This may not be a big deal with audio circuitry but it can be for other things. I know this from having to deal with potting and capacitive sensing circuitry at work...
I'd be interested in knowing exactly what kind of potting it is.
Hi!
Is anybody knows what is the reference of the components marked L1UUA, number T25 and T26 on the UCD400 board ?
I know it is a CRD but I don't know which type is it !
Is anybody knows what is the reference of the components marked L1UUA, number T25 and T26 on the UCD400 board ?
I know it is a CRD but I don't know which type is it !
Thank you Peter for your answer 🙂
..Yes I found it's smd version of the J511...which is a constant current diode about 4mA for this one...
Know, I sell my UCD ! ...I don't need to find them!
..Yes I found it's smd version of the J511...which is a constant current diode about 4mA for this one...
Know, I sell my UCD ! ...I don't need to find them!
Updated UCD modules
I see Hypex have the newer UCD's on the webshop.
Any nice pictures to show us Jan-Peter? 😉
I see Hypex have the newer UCD's on the webshop.
Any nice pictures to show us Jan-Peter? 😉
That's fast... 😉
Check our website, www.hypex.nl click on the picture of the UcD180/400HG and you will see a picture with more details.
Jan-Peter
Check our website, www.hypex.nl click on the picture of the UcD180/400HG and you will see a picture with more details.
Jan-Peter
... Now the standby pin works the way I thought ( on the OEM's atleast... )
IMHO the right way ...
Also...
- So this is what you've been doing when you're not working on the SMPS ... 😀
/eleson
IMHO the right way ...
Also...
- So this is what you've been doing when you're not working on the SMPS ... 😀
/eleson
eleson said:
I am glad you like our OEM series... However these are only for manufactures.
The SMSP is still in progress, next week the second protoype will be up and running. After this version we will decide when we put this in production.
We are busy with a lot of things... 😉
Jan-Peter
Jan-Peter do you have an estimate when these will be orderable from the webshop? At the moment I still see the st's only.
Bas Horneman said:
Click on Hypex products on the left and then scroll down, the new HG series is at the bottom🙂
Maybe Hypex 12v regulators? I was going to ask if U6 and U7 on the UCD board is for the regulators
guyv said:
I already asked Jan-Peter via email, so I may as well share his answer -
"The HxR12 is our new soon to release discrete audiophile low voltage regulator with very low noise and a very good PSRR."
Hi,
I've a few upgrade kits for the UcD180/400 amps left. With one kit you can easily upgrade a ST version to an AD version. Included in the kit are an AD8620 opamp and 2 current diodes. The price for one kit would be 15 Euro (half of the Hypex price).
For further improvement you can have Visay Series 136 ultra low ESR caps (not included in the standard AD version). The price for two 470uF, 50V caps (UcD180) is 3.50 Euro and for two 470uF,63V caps (UcD400) 4.50 Euro.
Shipping costs to Europe are 2 Euro (US 4 Euro).
Regards,
Frank
I've a few upgrade kits for the UcD180/400 amps left. With one kit you can easily upgrade a ST version to an AD version. Included in the kit are an AD8620 opamp and 2 current diodes. The price for one kit would be 15 Euro (half of the Hypex price).
For further improvement you can have Visay Series 136 ultra low ESR caps (not included in the standard AD version). The price for two 470uF, 50V caps (UcD180) is 3.50 Euro and for two 470uF,63V caps (UcD400) 4.50 Euro.
Shipping costs to Europe are 2 Euro (US 4 Euro).
Regards,
Frank
Frank, you've posted this in 5 different places. We call that "spamming." This is not an acceptable use of the forum.
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