Salas SSLV1.3 UltraBiB shunt regulator

[Crazoff]

Manniraj, thank you for reminding me. I wanted to ask a question about LEDs. I used Kingbright L-7104LSRD (L-934LSRD) is this replacement acceptable? Thanks.

[daansan]

I've read somewhere that the UltraBib does not like a capacitive load? I'm considering to use a bipolar pair of UBib's to power my Twisted Pear Mercury Output Stage which has 2 330uf caps per rail. Can someone share experiences around utilizing the Ubib with such a load?

[Salas]

Leds can be various. Most reds & greens have steep enough If/Vf curve at low mA. If those available have published data compare their If/Vf curves and choose the steeper one.

I have successfully tested the V1.3 with a 2200uF capacitor connected as load. There is a picture of that somewhere early in the thread. The thing that it does not like is a very low ESR capacitor, say a film capacitor, directly on its output connector.

[manniraj]

Originally Posted by Crazoff

Manniraj, thank you for reminding me. I wanted to ask a question about LEDs. I used Kingbright L-7104LSRD (L-934LSRD) is this replacement acceptable? Thanks.

I hope using this LED was fine in your psu and the voltage is stable without any issues?

Thanks

[Crazoff]

Hello, I have not tested the regulator very closely yet. The launch was almost without problems, the voltage is regulated, stable. Still, I plan to replace the LEDs with L383SRDT.

[manniraj]

Originally Posted by Crazoff

Hello, I have not tested the regulator very closely yet. The launch was almost without problems, the voltage is regulated, stable. Still, I plan to replace the LEDs with L383SRDT.

Thanks they are a bit expensive, but let me also get few and try in my builds.