Yes, +1. For Class A where the current flow is relatively constant, cap Mx make total sense. I tested the SLB at 4.75A and 36v and the ripple before the cap Mx was circa 125mV and after was <1 mV rms. On amps that have poor PSRR (most SE Class A), it makes a world of difference. The difference between audible hum and pure silence. Only two 15,000uF caps and 0.1R in CRC was used upstream of cap Mx.
To get 1mV ripple at 4.75A with a CRC would be an enormously large (and expensive) cap bank.
So I totally disagree with:
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Looks like a lot of added complexity.A CLC with a couple of 10mh,5A $40 chokes drops ripple down to around 3mv in a typical Firstwatt power supply.
1 resistor a cap (mine has 3 small caps instead 1 big one) and a mosfet or darlington. Not really complicated at all, and you don't have to worry about magnetic fields generated by the inductors.
This supply is a universal supply design it doesn't advocate any method over another.
It user configurable.
If you want CRC it does it
If you want CLC it does it
If you want mosfet cap multiplier it does it
If you want darlington cap multiplier it does it
If you want regulated mosfet supply it does it
If you want regulated darlington supply it does it.
People are making way too many assumptions here.
The thing is user configurable.
It does everything.
That's why it's called The Universal Ripple Killer.
You don't install or use everything, only what interests you.
Giving people freedom to choose is a good thing I think.
Some times you guys make me doubt my dumbness level.
I am meant to be the dumbest here not you people.
Let's not argue about this stuff, I've got you covered regardless of what your prejudices/biases might be.
This supply is a universal supply design it doesn't advocate any method over another.
It user configurable.
If you want CRC it does it
If you want CLC it does it
If you want mosfet cap multiplier it does it
If you want darlington cap multiplier it does it
If you want regulated mosfet supply it does it
If you want regulated darlington supply it does it.
People are making way too many assumptions here.
The thing is user configurable.
It does everything.
That's why it's called The Universal Ripple Killer.
You don't install or use everything, only what interests you.
Giving people freedom to choose is a good thing I think.
Some times you guys make me doubt my dumbness level.
I am meant to be the dumbest here not you people.
Let's not argue about this stuff, I've got you covered regardless of what your prejudices/biases might be.
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Yours sounds like it is quite simple,I was looking at the one in the previous posts which is not.I'm sure there will be lots of interest for yours,simple and effective.
I guess I probably should have revealed more.
I just wanted to make a report on the progress with this and reveal things as I have a chance to test it all out.
Amusingly, no one mentions sound. Apart from ripple, RC/LC/cap multipliers all sound very different from each other. Is this not a consideration any more?
That's a personal opinion, people's opinions vary quite a bit especially to matters of taste.
That's why it's a universal design. It can be configured in numerous way.
It's up to the person to decide for themselves, what they like.
At least now they will have an easy means of actually comparing for themselves.
That's why it's a universal design. It can be configured in numerous way.
It's up to the person to decide for themselves, what they like.
At least now they will have an easy means of actually comparing for themselves.
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When it come to these observations, I would want to know if both supplies at least provide the exact same technical specs in terms of output impedance and ripple etc
When someone goes from CRC to CLC and the ripple goes from 100mV pk-pk to say 5mV pk-pk, and then claim the difference in sound is because the inductor has some magic properties when no comparison was ever done with a CRC supply with the exact same 5mV pk-pk ripple is kind of dumb.
I have also even heard recently some person going from CLC to CRC and much preferring CRC, but is this because the CLC supply was never correctly implemented in the first place. It's not really possible for us to know.
So we have some people that love CLC, and then others who have had CLC and then changed to CRC and much prefer CRC.
I think this could be a very personal thing for people.
Having said that, these observations do interest me. You could say that is what motivated me for the doing this in the first place. I want to test all this out for myself.
I encourage everyone to try different things.
When someone goes from CRC to CLC and the ripple goes from 100mV pk-pk to say 5mV pk-pk, and then claim the difference in sound is because the inductor has some magic properties when no comparison was ever done with a CRC supply with the exact same 5mV pk-pk ripple is kind of dumb.
I have also even heard recently some person going from CLC to CRC and much preferring CRC, but is this because the CLC supply was never correctly implemented in the first place. It's not really possible for us to know.
So we have some people that love CLC, and then others who have had CLC and then changed to CRC and much prefer CRC.
I think this could be a very personal thing for people.
Having said that, these observations do interest me. You could say that is what motivated me for the doing this in the first place. I want to test all this out for myself.
I encourage everyone to try different things.
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This may or may not be the proper place to ask, so if it should be moved to "Measurements", that is totally OK with me. I am still attempting to absorb a lot of material, and EEVBlog has been an excellent resource among many...
I watched this and a few accompanying videos some time ago. Would this measurement technique (particularly with the emphasis on the differential probes), be appropriate for audio power supplies similar to the design presented here and others? I believe I saw a thread re: how to build a proper set of differential probes, but I haven't found it again. I think it was Jan or one of the others that was offering to help out DIYers with a relatively inexpensive option when compared to the cost of commerical options. I'll dig around.
Thanks for any insight!
EEVblog #594 - How To Measure Power Supply Ripple & Noise - YouTube
I watched this and a few accompanying videos some time ago. Would this measurement technique (particularly with the emphasis on the differential probes), be appropriate for audio power supplies similar to the design presented here and others? I believe I saw a thread re: how to build a proper set of differential probes, but I haven't found it again. I think it was Jan or one of the others that was offering to help out DIYers with a relatively inexpensive option when compared to the cost of commerical options. I'll dig around.
Thanks for any insight!
EEVblog #594 - How To Measure Power Supply Ripple & Noise - YouTube
Yes this is how I do measurements.
You don't need to over complicate it though. Just a standard set of probes with a dual channel oscilloscope to do a differential measurement. You only need the ability to qualitatively show one design is better than another etc.
Start simple.
You don't need to over complicate it though. Just a standard set of probes with a dual channel oscilloscope to do a differential measurement. You only need the ability to qualitatively show one design is better than another etc.
Start simple.
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Thank you! I just watched "Scopes for Dopes" highlights again along with running through the tutorial in my scope manual. I did a proper adjustment for probe compensation and got a bit more familiar with trigger operation. Time to play a bit. I am finally confident enough in the basics to do some measurements without fear of damaging the scope or the DUT.
