Thanks meanman, i wonder for the import taxes in Greece when they shipped from Jordan.
Shipped 6 Units last year to your country, If I remember very well they passed customs, but the guy who bought them confirmed to me that was a pure luck.
Not sure if declaring a low value will help.
Thanks
You can Pay 20$ then the rest of the amount, no problems, then show them the 20$ payment paper.
Hi Cresnet,
Is the smps600 capable to power 2 units of TPA3255 amp offered in this (Group buy: TPA3251_TPA3255 Amplifier board and ADAU1701 DSP Pre-Amp board
Or what's your smps recommendation for tpa3255 to drive 100w into 8ohnm per channel? Speaker is diy lxmini studio.
Is the smps600 capable to power 2 units of TPA3255 amp offered in this (Group buy: TPA3251_TPA3255 Amplifier board and ADAU1701 DSP Pre-Amp board
Or what's your smps recommendation for tpa3255 to drive 100w into 8ohnm per channel? Speaker is diy lxmini studio.
Yes, the SMPS-600 is capable of driving 2 units of that (TPA3255), but the best option is to use separate SMPS for each amplifier beside its 100W power.
Hi Cresnet,
I have no schematic and you can assume I know very little about SMPS supplies
A while ago I bought 2 lab grade switched power supplies rated at 500V and 1.6A. These are very handy for prototyping tube amplifiers and i think there is a market for some acessible units without all the bells and whistles of the lab grade unit. I think a "decent" ripple, adjustable voltage and (max) current (both with multiturn potmeters) would be enough for most hobbyist. My question if that would be possible?
That was number 1. Number 2 is a planned stereo OTL Circlotron tube amplifier for a 32 ohm load. This would require 4x supplies between 170V and 190V, 600W each is enough: these are AB amplifiers, with standing current of a 150-200mA per PS, and peaks up to 3A. I see you have the 600W supplies available up to +-82V, can I just ignore the centertap and use them as a 164V supply? 164V could just do it, but ideally it should be a bit more - say 180V at 600W. Can you do that?
Many thanks for your attention and time!
Erik
I have no schematic and you can assume I know very little about SMPS supplies
A while ago I bought 2 lab grade switched power supplies rated at 500V and 1.6A. These are very handy for prototyping tube amplifiers and i think there is a market for some acessible units without all the bells and whistles of the lab grade unit. I think a "decent" ripple, adjustable voltage and (max) current (both with multiturn potmeters) would be enough for most hobbyist. My question if that would be possible?
That was number 1. Number 2 is a planned stereo OTL Circlotron tube amplifier for a 32 ohm load. This would require 4x supplies between 170V and 190V, 600W each is enough: these are AB amplifiers, with standing current of a 150-200mA per PS, and peaks up to 3A. I see you have the 600W supplies available up to +-82V, can I just ignore the centertap and use them as a 164V supply? 164V could just do it, but ideally it should be a bit more - say 180V at 600W. Can you do that?
Many thanks for your attention and time!
Erik
Hi Cresnet,
I have no schematic and you can assume I know very little about SMPS supplies
A while ago I bought 2 lab grade switched power supplies rated at 500V and 1.6A. These are very handy for prototyping tube amplifiers and i think there is a market for some acessible units without all the bells and whistles of the lab grade unit. I think a "decent" ripple, adjustable voltage and (max) current (both with multiturn potmeters) would be enough for most hobbyist. My question if that would be possible?
That was number 1. Number 2 is a planned stereo OTL Circlotron tube amplifier for a 32 ohm load. This would require 4x supplies between 170V and 190V, 600W each is enough: these are AB amplifiers, with standing current of a 150-200mA per PS, and peaks up to 3A. I see you have the 600W supplies available up to +-82V, can I just ignore the centertap and use them as a 164V supply? 164V could just do it, but ideally it should be a bit more - say 180V at 600W. Can you do that?
Many thanks for your attention and time!
Erik
Yes, you could use the +-84VDC SMPS-600 ignoring the center tap.
I had some +-90V transformers, but I have to look for them.
Remember this is not a regulated SMPS.
Thanks
No, There is no input for external over temperature built into the SMPS-600.
Switching frequency is around 60KHz.
The upcoming version of the SMPS-600 and the SMPS-1200 will have many new futures fully covered.
Also let me know if you have other things to be covered.
Hope that helps
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Thanks, that switching frequency is high enough and still low enough to still pack a punch.
Lets assume your smps was to become a component of a commercial design that requires to meet certain requirements
Some probably unecessary queries since this is 60kHz, probably same applies at 50Hz/60Hz
1. Are there any EMC standards that the SMPS has met?
2. Do you have any effective recommendations on shielding* the SMPS or the analog stages of an amplifier , by probably partitioning the chassis with walls? Braiding pairs or shielding all wire interconnects ?
3. How well behaved is the SMPS? Is a steep 40kHz HP filter necessary on the amplifier input stage?
4. Would a toroidal transformer rather than EI been more effective at reducing EMI ? How does she saturate ?
5. How have you addressed power efficiency** ? Does the supply turn off with no suitable input signal or no suitable load ?
For sake of modularity the protection and power efficiency could be provided by a separate PCB/module, while the smps remains purely smps to afford plug and play capability
*Borrowed from electronic design: In an ideal world, the perfect EMC enclosure would be manufactured from a heavy-gauge, dense material such as steel, and would have six solid, fully sealed sides, with absolutely no cables traveling in and out. However, we live in the real world, where EMC enclosures are much more interesting because they must provide effective EMI shielding while meeting some pretty inconvenient OEM system demands. These demands include slots and openings, heat management, power, I/O, data bus cables, and the ability to insert and remove single-board computers (SBCs) and line-replaceable units. Each of these requirements mandates special design considerations to understand the EMI problems presented and the solutions available.
**Power Topics for Power Supply Users: Department of Energy Level VI energy efficiency standards for external power supplies
Some probably unecessary queries since this is 60kHz, probably same applies at 50Hz/60Hz
1. Are there any EMC standards that the SMPS has met?
2. Do you have any effective recommendations on shielding* the SMPS or the analog stages of an amplifier , by probably partitioning the chassis with walls? Braiding pairs or shielding all wire interconnects ?
3. How well behaved is the SMPS? Is a steep 40kHz HP filter necessary on the amplifier input stage?
4. Would a toroidal transformer rather than EI been more effective at reducing EMI ? How does she saturate ?
5. How have you addressed power efficiency** ? Does the supply turn off with no suitable input signal or no suitable load ?
For sake of modularity the protection and power efficiency could be provided by a separate PCB/module, while the smps remains purely smps to afford plug and play capability
*Borrowed from electronic design: In an ideal world, the perfect EMC enclosure would be manufactured from a heavy-gauge, dense material such as steel, and would have six solid, fully sealed sides, with absolutely no cables traveling in and out. However, we live in the real world, where EMC enclosures are much more interesting because they must provide effective EMI shielding while meeting some pretty inconvenient OEM system demands. These demands include slots and openings, heat management, power, I/O, data bus cables, and the ability to insert and remove single-board computers (SBCs) and line-replaceable units. Each of these requirements mandates special design considerations to understand the EMI problems presented and the solutions available.
**Power Topics for Power Supply Users: Department of Energy Level VI energy efficiency standards for external power supplies
Attachments
Do you have the sim files for your circuit , for which software ?
SMPS Circuits - tina.com
Switched-mode power supply - Wikipedia
Simple SMPS Circuit
http://www.idc-online.com/technical...Switched_-_Mode_Power_Supply_SMPS_Circuit.pdf
Is your unit similar to below
SMPS Circuits - tina.com
Switched-mode power supply - Wikipedia
Simple SMPS Circuit
http://www.idc-online.com/technical...Switched_-_Mode_Power_Supply_SMPS_Circuit.pdf
Is your unit similar to below