Serious stuffA good amplifier must be bulky
No , a 1kg 60-0-60V SMPS can pump out 2 X 20A with 80Khz ripple.
Heck with that big IRON , give me a golfball sized one that can wipe the floor
with that 20th century dinosaur. Just 25% capacitance needed at the output ,as well.
"smart" shut down (and) an SMPS can be controlled to make for class G
amp operation , as well.
PS - I suppose "purists' could support big Iron and Copper .... you know - like
the coal industry.
OS
Pete, maybe SMPS in the power amplifiers deserves more thorough testing, but at the moment I'm somewhat skeptical about using them in the amplifiers designed to last. I see too many faults in SMPS moduled used in the servers and UPS devices.
Cheers,
Valery
China junk? ha.... I can design these now (and build them). without cutting
corners , I have 2 60-0-60V SMPS's that will outlast their electrolytics ... ha ha - then
gracefully shut down.
Antec , Seasonic , and Corsair PC supplies live out their lives like this.
I have a 15 year old antec with new DC output caps and a 7 year old Corsair
that was used (abused) for bit coin mining. Controller shuts down SMPS if
output cap ESR goes astray. I'm sure this level of PS tech would last 30+
years with multiple electrolytic changes.
So , whomever makes your servers uses crap for PS's.
Edit - since SMPS's need far fewer electro's - you can spend more to derate
AND up the ESR rating. PS- the Corsair could most likely survive 15 years
of mining with my cap choices.
OS
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With what I stated above one could be picky about components and out
last an analog supply by a wide margin. While spending far less and not
supporting the "earth rapers"(massive copper and iron - 20th century "dino"
industries).
PS - trip across N. america = EVERY main ecosystem is either at (or near )
collapse .... or just simply non-existant (DEAD).
Bad monkeys.
OS
last an analog supply by a wide margin. While spending far less and not
supporting the "earth rapers"(massive copper and iron - 20th century "dino"
industries).
PS - trip across N. america = EVERY main ecosystem is either at (or near )
collapse .... or just simply non-existant (DEAD).
Bad monkeys.
OS
Remember to breathe ostripper
Did you know that if you buy a state of the art Tessa car, you'll have to drive 600000 kilometres for it to become co2 neutral.
Fixing our electronics and keep it running must be best seen with my green glasses
I breath sparingly . Still not carbon neutral. I did the same trip 13 years ago -
some pristine and some challenged ecosystems. 13 years =exponential collapse(s).
13 years from now - drive that POS Tesla into the ocean , because the continent
might not even support life. Or consider walking now ??
PS - I am not excited by these realizations . Considering the "beast' (people)
It is quite expected that they will drive the earth into the $hitcan just for
any trivial convenience. Corporations have trained 3 generations to be
Narcissistic consumers devoid of any future considerations. Just take more
photos of deserts and dead (or burning) forests with yer china apple phone.
(there is my 3 cents = inflated)
OS
OS
Hi amplitude,
I like those extra legs!
So tell me, was someone just trying to see how many Mosfets would fit the extrusion? They used the correct type of source resistors. What is the value on those?
With 150 VDC supply rails, you might blow them up unless they are stacked like a Marantz 510 output stage. Those transistors are only good for 200 Vds. Your total supply is 300 VDC. Better check to see if all those power transistors are in parallel, or are there two groups of 3 in parallel per polarity? That should give you a 400 VDC breakdown.
-Chris
I like those extra legs!
So tell me, was someone just trying to see how many Mosfets would fit the extrusion? They used the correct type of source resistors. What is the value on those?
With 150 VDC supply rails, you might blow them up unless they are stacked like a Marantz 510 output stage. Those transistors are only good for 200 Vds. Your total supply is 300 VDC. Better check to see if all those power transistors are in parallel, or are there two groups of 3 in parallel per polarity? That should give you a 400 VDC breakdown.
-Chris
Looks like one of those ICEamp designed power amp modules - and maybe SMPS combo?
I won't just give it away (like my 20 amps on diya
).I like AB analog reproduction ...... but Tesla was right , 50 or 60hz is "dino".
Connex electronics - is my baseline - SMPS300RE | Connex Electronic
I'm hooked - 95.4% eff. + every safety feature + good PFC. (below)
A badger or slewmaster connected to this has UN - measurable PSRR.
My design uses a more advanced sine based controller that also allows
realtime output changes - smart class G !!!
2 pair output devices on any AB amp = 250W.
Your big bulky 40KG amp turns into a 10kg one with far superior specs.
No more melted screwdrivers , a blown output stage will not emit "magic
smoke" for long (or at all).
I have shorted and abused the connex SMPS - it is SOLID ! Actually better
than the best PC SMPS's.
OS
Attachments
Appears to be this one:
SMPS300RE | Connex Electronic
~edit~
Looks like the link was already there.
I like the look of these. Just $12 shipping to Oz seems pretty reasonable too. I might have to get me some to try out!
SMPS300RE | Connex Electronic
~edit~
Looks like the link was already there.
I like the look of these. Just $12 shipping to Oz seems pretty reasonable too. I might have to get me some to try out!
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