@Schematix: Hybrid (Switching/Linear) bench PSUs exist for quite some time, they are also known as "mixed mode" PSUs. British (GB) made EX-R Series from AimTTi are just this. Some forum posts can also be found (ex from TI,...).
Nice regulator, pricey though ! Linear regulators have been used to clean the outputs of switch mode regulators for years, they do SMD chips with both built-in for just this purpose too as well DIY. Not all linear regulators are suitable for the purpose though, it has to respond very quickly to smooth out spikey HF switch mode noise.
Switching PSUs don’t necessarily have high output ripple but they are slower in transient response compared to linear ones and most PSUs reach low to mid 80% efficiency figures when drawing a significant portion of the rated power, the poly-phase switching regulator such as the ones used to provide power on modern X86 processors like on the various X570 and Z590 motherboards are quite impressive in every regard.
Handy if you don't need a huge amount of power I guess (I tend to need as much as I can get, typical power souce is a 120v 32s lipo battery that can do 120A continuous/300A for a few seconds into a converter that puts out 12-150V and 10-150A current limit). For smaller things I just use 2x 0-30v 10A supplies in series or a 0-500V 30A one I built that runs on 240V 60A mains.
The switching part must be in the multiple 100s of KHz range as the electrolytic bulk caps look not that high performance and it must be the high Capacitance MLCCs for the regulation. I love those tiny MLCCs, they are quite performant specially considering the price and form factor. Would have loved to see some Moulded Aluminium polymers but this is very good.
Won’t find cheaper options with that level of ripple, there’s nothing like it in that size. You can absolutely find cheaper/as powerful PS’s but nothing out there that can beat those specs (atm)
Does this use a ultra low drop out linear regulator with a tracking switching unit? I have wondered about this design for sometime and I got the answer after watching the whole video, thank you.
Thanks for the interesting review. I'm wondering if I can stack two PS modules to be centrally commanded by the screen controller, as a differential power supply (common negative) and/or a series arrangement, both for versatile electronic breadboard projects and teaching.
What I don't understand why use an antiquated standard like QC3.0 instead of PD3.0 That can deliver 100W? I probably should wait for a revision with a PD chip inside. BTW I like the video, bro.
QC 3.0 is simple to implement. PD3.0 isn't, it might very well require another (or a more expensive and/or supply limited) microcontroller or a dedicated interface chip.
Yes, that is clever. The linear side only ever drops 0.5V so at max o/p of of 5A, there is a mere 2.5W loss as heat. Thats around 2% contribution to the overall loss of the system. The obvious question is can you design something using this principle to add to any switching regulator? Since the voltage drop will always be 0.5V this shouldn't be too hard?
Great video as always. The tipe of power supply that shares both worlds switching and linear is not something new, I have a Peaktech 6225 that shares both worlds. Another thing, high capacitance on the output is not always a good thing, if this power supply has a slow feedback loop it can ruin your day.
given how small it is typcal use would be to run an Arduino or power some other circuit you built on a breadboard, same as the common 0-30v 0-5A supplies just about everywhere, it's just smaller and doesn't need a power outlet (handy if you need to be DC isolated from mains and don't have an isolation transformer on hand).
Oh god the price is insane. 250 USD for this? Although It is not actually power supply, it is a regulator. The PowerBank and That DC laptop charger are Power Supply. BTW if this device has high precision then it's worth it.
@@flexairz By this logic Power supply doesn't exist. All real power supplies take AC voltage and give regulated DC voltage at output. All of them are like this. But the device that converts DC to DC is literally regulator or DC DC converter
What is the point of plugging a PSU into this device so that you can power something . . . . why not simply plug a PSU into the end device (bypassing the Miniware) ??
@@jimmyb1451 That's why I suggested in my first post to add a linear regulator after the main voltage regulation--to eliminate the ripple just as they did with the 132 $ unit.
@Schematix: Hybrid (Switching/Linear) bench PSUs exist for quite some time, they are also known as "mixed mode" PSUs. British (GB) made EX-R Series from AimTTi are just this. Some forum posts can also be found (ex from TI,...).
Wow cool, this would be a great rack mount power supply system.
Good to see you again fellow Kiwi & thanks for reducing my boredom in a L4 Lockdown...
Glad it passed some time. Hopefully we'll be back to 'normal' soon ;)
Nice regulator, pricey though !
Linear regulators have been used to clean the outputs of switch mode regulators for years, they do SMD chips with both built-in for just this purpose too as well DIY. Not all linear regulators are suitable for the purpose though, it has to respond very quickly to smooth out spikey HF switch mode noise.
Switching PSUs don’t necessarily have high output ripple but they are slower in transient response compared to linear ones and most PSUs reach low to mid 80% efficiency figures when drawing a significant portion of the rated power, the poly-phase switching regulator such as the ones used to provide power on modern X86 processors like on the various X570 and Z590 motherboards are quite impressive in every regard.
Great review, awesome product.
Just bought one too!
Quite an impressive little unit. Could you share more info regarding the resistive load tester you used in the video?
Amazing feat by Miniware and E-Design.
Handy if you don't need a huge amount of power I guess (I tend to need as much as I can get, typical power souce is a 120v 32s lipo battery that can do 120A continuous/300A for a few seconds into a converter that puts out 12-150V and 10-150A current limit). For smaller things I just use 2x 0-30v 10A supplies in series or a 0-500V 30A one I built that runs on 240V 60A mains.
The switching part must be in the multiple 100s of KHz range as the electrolytic bulk caps look not that high performance and it must be the high Capacitance MLCCs for the regulation. I love those tiny MLCCs, they are quite performant specially considering the price and form factor. Would have loved to see some Moulded Aluminium polymers but this is very good.
Great review and great product, I'm am seriously thinking of getting this and if I do I will use your link .....cheers.
Awesome, thank you!
Great review. I am sold. I want one.
The supply without screen is 144, thats not too bad, but unless you need the small size you can find cheaper options. I do like the form factor though
Won’t find cheaper options with that level of ripple, there’s nothing like it in that size. You can absolutely find cheaper/as powerful PS’s but nothing out there that can beat those specs (atm)
Great. Another gadget I must buy. Ya know my wife is going to slap me and you for this when she finds out hahaha.
Does this use a ultra low drop out linear regulator with a tracking switching unit? I have wondered about this design for sometime and I got the answer after watching the whole video, thank you.
Thanks for the interesting review.
I'm wondering if I can stack two PS modules to be centrally commanded by the screen controller, as a differential power supply (common negative) and/or a series arrangement, both for versatile electronic breadboard projects and teaching.
What I don't understand why use an antiquated standard like QC3.0 instead of PD3.0 That can deliver 100W? I probably should wait for a revision with a PD chip inside. BTW I like the video, bro.
QC 3.0 is simple to implement. PD3.0 isn't, it might very well require another (or a more expensive and/or supply limited) microcontroller or a dedicated interface chip.
Nice apart from the price. Will your own power supply kit be back in stock again?
Yes, that is clever. The linear side only ever drops 0.5V so at max o/p of of 5A, there is a mere 2.5W loss as heat. Thats around 2% contribution to the overall loss of the system.
The obvious question is can you design something using this principle to add to any switching regulator? Since the voltage drop will always be 0.5V this shouldn't be too hard?
Yes. This is a very common technique in any low noise high power design.
Great video. Thanks
Hi,
Where I can buy compatible adapters for Technics SL-PD9/SL-PD7A & Technics SJ-HDA710?
Please advise.
Thanj you.
They has vRMS in the specs not vPP.
Nice product
Great video as always. The tipe of power supply that shares both worlds switching and linear is not something new, I have a Peaktech 6225 that shares both worlds. Another thing, high capacitance on the output is not always a good thing, if this power supply has a slow feedback loop it can ruin your day.
be good if you told us how practical it is to use it and how much time it would last....depending on draw.
given how small it is typcal use would be to run an Arduino or power some other circuit you built on a breadboard, same as the common 0-30v 0-5A supplies just about everywhere, it's just smaller and doesn't need a power outlet (handy if you need to be DC isolated from mains and don't have an isolation transformer on hand).
Oh god the price is insane. 250 USD for this? Although It is not actually power supply, it is a regulator. The PowerBank and That DC laptop charger are Power Supply.
BTW if this device has high precision then it's worth it.
By your reasoning the DC laptop charger is not even the power supply as it gets its power from a wall socket. The power bank, yes.
@@flexairz By this logic Power supply doesn't exist. All real power supplies take AC voltage and give regulated DC voltage at output. All of them are like this. But the device that converts DC to DC is literally regulator or DC DC converter
Ive bought the P905 units on AliExpress (wait for sales) for ~$90 per... I have 5 of em
Was this purchased or sent free for review?
I hear your concerns. And I would like to assure you, my oscilloscope was not paid-off by miniware. I only use impartial testing equipment
Nice idea if they are reliable. :-)
Excellent 👌
Only if they could do logging.... Would have to measure charging over time....
What is the point of plugging a PSU into this device so that you can power something . . . . why not simply plug a PSU into the end device (bypassing the Miniware) ??
Your Riden uses a switching power supply as input power source so your compare is not fair
The Miniware too.. watch the video
@@flexairz no he uses LiPo battery as input power supply for miniware.
The riden has a 60v switching power supply inside
Nice gadget---but 132$??
Better to buy a cheap power supply & put the output through a linear regular. :)
Thanks for sharing!
Is that all they're charging?
That's cheap.
It's the interface that ruins it for me.
@@jimmyb1451 Haha.. I like the interface--but the cost is way too much, imo for a 150W regulated power supply.
@@ab_ab_c I hear ya, there are far cheaper ones. Not with 4mV ripple though.
But yeah. It's actually given me a few ideas for the PSU I'm designing.
@@jimmyb1451 That's why I suggested in my first post to add a linear regulator after the main voltage regulation--to eliminate the ripple just as they did with the 132 $ unit.
I really doubt its the linear regulator alone that gives those specs of ripple
Oh it's so cute :3
jajajjaajjjajjajajjjaa i like the neardental, hi from Venezuela
держи может пригодится.
кто-то ламает двигателя электрические, а кто-то делает пользу для всех и себя.
Видео ответ на вопрос подписчика. @
nice!🍟🍓🍓🦄
bush shirt
Good things come with price, unfortunately 😪
Very true!
I am third, great video
Apparently I'm first. :P