Happy to see them soon in my mail
-
WANTED: Happy members who like to discuss audio and other topics related to our interest. Desire to learn and share knowledge of science required. There are many reviews of audio hardware and expert members to help answer your questions. Click here to have your audio equipment measured for free!
SMPS for Audio Applications
- Thread starter MicroAudio
- Start date
OP
- Thread Starter
- #42
Happy to see them soon in my mail
Expect them in your mail soon, they will fly on Sunday
Count Arthur
Major Contributor
- Joined
- Jan 10, 2020
- Messages
- 2,245
- Likes
- 5,031
Do you have a functional equivalent to the Hypex SMPS1200A700, 2x85Vdc?
If so, what sort of price would it be?
If so, what sort of price would it be?
OP
- Thread Starter
- #44
I have to check my stock on Saturday, but the voltage can be anywhere between 81V & 87V
Will send you PM with the update.
Thanks
OP
- Thread Starter
- #46
OP
- Thread Starter
- #47
OP
- Thread Starter
- #49
Hello
The SMPS1K-PFC is the equivalent for the Hypex SMPS1200.
Will PM you
The SMPS1K-PFC is the equivalent for the Hypex SMPS1200.
Will PM you
Hi Grobalt did you get you power supply set up? Would you be so kind to share your thoughts, opinions?Mine ?
Cheers
Jay
Will take some weeks, Eval 2 did not arrive yet as well as the cases
OP
- Thread Starter
- #52
What is your recommended PSU for a single channel 1ET400A amp module - a "monoblock" amp?
And what about for powering 3 such amp modules - a three channel amp?
And what about for powering 3 such amp modules - a three channel amp?
OP
- Thread Starter
- #54
For a single channel, I recommend the SMPS630-G, and for 3 channels SMPS1K-PFC will do the job
Thanks. I'd have thought the 1K would be underpowered to let 3 channels of Purifi amp modules reach their maximum outputs. Do you have detailed performance specs available for it?
OP
- Thread Starter
- #56
3 * Purifi is 400W each, as far as I know so tuning the SMPS1K-PFC to deliver 14A @ 119VDC = 1666W with over 400W headroom.
I doubt that you will draw that current for more than 2 seconds, so you are good to go, that's just what I expect.
Sending you the manual now
I doubt that you will draw that current for more than 2 seconds, so you are good to go, that's just what I expect.
Sending you the manual now
Ivanovitch_k
Member
- Joined
- Nov 25, 2020
- Messages
- 5
- Likes
- 5
hye, those smps looks nice. Would you happen to have a model that would support 5 purifi amps ?
audio2design
Major Contributor
- Joined
- Nov 29, 2020
- Messages
- 1,769
- Likes
- 1,830
Questions:
- you say low EMI. How much lower than FCC class B or CISPR are these for conducted emissions and also for radiated emissions using a synthetic load? Do you have readily available plots?
- You mentioned PFC function. At 240 VAC, and 50% power, what is the power factor and THD?
- most SMPS are not selectable these days but simply work over a wide input voltage range. What range do yours work over?
- what architecture do these power supplies use?
- what is the minimum and maximum output switching frequency of what I assume is the second stage
- have you done any work on regulatory approval. Looking at blow ups of pictures I have concerns about spacing for creepage and clearance
- What typical efficiencies are you achieving?
- you say low EMI. How much lower than FCC class B or CISPR are these for conducted emissions and also for radiated emissions using a synthetic load? Do you have readily available plots?
- You mentioned PFC function. At 240 VAC, and 50% power, what is the power factor and THD?
- most SMPS are not selectable these days but simply work over a wide input voltage range. What range do yours work over?
- what architecture do these power supplies use?
- what is the minimum and maximum output switching frequency of what I assume is the second stage
- have you done any work on regulatory approval. Looking at blow ups of pictures I have concerns about spacing for creepage and clearance
- What typical efficiencies are you achieving?
Last edited:
OP
- Thread Starter
- #59
One SMPS1K-PFC cannot drive 5 Purifi amplifiers at full power, you would need 2 units at least!
unless you are not exceeding the 1200W total power, then you are good to go!
OP
- Thread Starter
- #60
- you say low EMI. How much lower than FCC class B or CISPR are these for conducted emissions and also for radiated emissions using a synthetic load? Do you have readily available plots?
I don't have any plot yet, to be honest, but it is low to the level it's not disturbing any sensitive device around it.
- You mentioned PFC function. At 240 VAC, and 50% power, what is the power factor and THD?
PFC function means a wide input voltage range from 110VAC up to 265VAC. and the 240VAC was written as a generic refrence.
I don't have any measures for THD yet, Power factor is 98% @ 110VAC & 99% at 240VAC.
PF @ 50% power is 98%
- most SMPS are not selectable these days but simply work over a wide input voltage range. What range do yours work over?
110VAC to 265VAC , and any range in between for example 178.7VAC
- what architecture do these power supplies use?
ZCS
- what is the minimum and maximum output switching frequency of what I assume is the second stage
65KHZ & maximum 71KHZ, FYI no synchronous rectifier
- have you done any work on regulatory approval. Looking at blow ups of pictures I have concerns about spacing for creepage and clearance
All of my work will go under CE approval at some stage later for sure. but it meets all the safety requirements.
don't worry too much about creepage distances because I take care of them really well with an additional 3mm airgap between primary and secondary, also were needed at some specific locations at the primary side.
Thanks!
I don't have any plot yet, to be honest, but it is low to the level it's not disturbing any sensitive device around it.
- You mentioned PFC function. At 240 VAC, and 50% power, what is the power factor and THD?
PFC function means a wide input voltage range from 110VAC up to 265VAC. and the 240VAC was written as a generic refrence.
I don't have any measures for THD yet, Power factor is 98% @ 110VAC & 99% at 240VAC.
PF @ 50% power is 98%
- most SMPS are not selectable these days but simply work over a wide input voltage range. What range do yours work over?
110VAC to 265VAC , and any range in between for example 178.7VAC
- what architecture do these power supplies use?
ZCS
- what is the minimum and maximum output switching frequency of what I assume is the second stage
65KHZ & maximum 71KHZ, FYI no synchronous rectifier
- have you done any work on regulatory approval. Looking at blow ups of pictures I have concerns about spacing for creepage and clearance
All of my work will go under CE approval at some stage later for sure. but it meets all the safety requirements.
don't worry too much about creepage distances because I take care of them really well with an additional 3mm airgap between primary and secondary, also were needed at some specific locations at the primary side.
Thanks!
Last edited:
Similar threads
