Hello,
I uploaded the LTSpice simulation on my Github repository.
Total RMS noise on the simulation: 293.8nV from 1 Hz to 100 KHz at an output of 51 Vdc. These are of course "theoretical" measurements due to the fact that in a simulation the components are "ideal".
I'm waiting for new PCB version 1.1.1.
Stay tuned.
Stef.
I uploaded the LTSpice simulation on my Github repository.
Total RMS noise on the simulation: 293.8nV from 1 Hz to 100 KHz at an output of 51 Vdc. These are of course "theoretical" measurements due to the fact that in a simulation the components are "ideal".
I'm waiting for new PCB version 1.1.1.
Stay tuned.
Stef.
Hi Moor,
I tried the circuit with a single TO-247 MOSFET per channel (irfp140n and irfp9140n) and without 0.47R. The noise is higher (400nV instead of 293.8nV with 2 MOSFETs). I would have to try other TO-247 models to see if it is because of these particular models or if it is general.
Stef.
I tried the circuit with a single TO-247 MOSFET per channel (irfp140n and irfp9140n) and without 0.47R. The noise is higher (400nV instead of 293.8nV with 2 MOSFETs). I would have to try other TO-247 models to see if it is because of these particular models or if it is general.
Stef.
WORKS !!!
A pleasure to solder. The chips underneath are super easy to solder.
Just powered on without load. I'll let it heat up for now.
Max output with 60V input without load: 54.9V
A pleasure to solder. The chips underneath are super easy to solder.
Just powered on without load. I'll let it heat up for now.
Max output with 60V input without load: 54.9V
Attachments
With a load of 50mA, the voltage rises to 55.07V.
55.07 on the positive rail and 55.06 on the negative rail.
The regulator takes 4 seconds to reach 50V and 11 seconds in total to reach 55V.
At 50mV everything is cold of course.
I'm going to bring out the heavy artillery soon to torture her.
55.07 on the positive rail and 55.06 on the negative rail.
The regulator takes 4 seconds to reach 50V and 11 seconds in total to reach 55V.
At 50mV everything is cold of course.
I'm going to bring out the heavy artillery soon to torture her.
Yes.
There remains this one in 220uF but 5 mm higher (10x25:5).
661-EKYB800E221MJ25S
I will quietly do my tests up to 1A afterward we will see.
There remains this one in 220uF but 5 mm higher (10x25:5).
661-EKYB800E221MJ25S
I will quietly do my tests up to 1A afterward we will see.
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