Q17 Sigma22 Regulated Ultrastable Ultralow Noise Linear Power Supply +-50/60Vcc

[stef1777]

First measure.

Ripple at 55V/50mA for 60V input.

 

[Ryssen]

Hello,

Kicad files and Gerber files uploaded to the Github repository.

Have fun.

Stef.

Do you have a link to the files? I am new to Github....

 

[stef1777]

On the first post of this topic.

 

[Ryssen]

Thanks.

 

[stef1777]

Hello,

I did a test at 60V input 200mA load with an electronic load. I can't measure. The device full of MOSFET disrupts the measurement.

I need to see if I can find power resistors that would at least allow me to test the ripple at 200mA.

I'll do heat and voltage loss tests based on amperage instead.

At 200mA, the SK104-50 heatsinks are at 30/32°C after 1 hour (room at 20°C).

The bet of a board which holds 200mA with its heatsinks on the PCB seems to have been met. I still have to have some room (15W in theory). I will push to stabilize them around 40°C.

Stef.

 

[stef1777]

Hello,

The onboard heatsinks allow you to hold up to 17W per rail. Afterwards, you will have to switch to an external heatsink.

Stef.

 

[stef1777]

Ripple measure at 60V input with 200mA load (passive power resistor).
Output : 54.7V

Very good.

 

[stef1777]

Come on, let's get down to business, the music.
In mono unfortunately and on my cheapest speakers to start.

Stef.