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Old 3rd May 2010, 06:53 PM   #21
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Hello!

I'm planning on replacing the power amp in my bass amplifier with a class D amp, and I'm leaning towards the TA3020 v3b with an SMPS-500. I've already built a 4-channel PA amp with those and an SMPS-1000, and they work excellently.

Now, since I'm throwing out the power supply as well (6kg of toroid is just too heavy) I'm left without +-15 volts for the preamp section. What do you suggest as a practical way of getting those voltages? Is there a way to get that from the SMPS? It doesn't really have to be particularly well regulated; the current requirements are very modest.
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Old 5th May 2010, 04:03 PM   #22
Cristi is offline Cristi  Europe
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the smps suitable for DA-1 will be the next version of A1000SMPS

the SMPS500 has 2 versions, the actual one and the newer one which will come at the middle of this month. the second one will have the aux. voltages as well....
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Old 6th May 2010, 12:30 PM   #23
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Quote:
Originally Posted by Cristi View Post
the SMPS500 has 2 versions, the actual one and the newer one which will come at the middle of this month. the second one will have the aux. voltages as well....
Oh, excellent! I'll just hold my horses until it's available. But I'll want dibs on the first batch.
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Old 20th May 2010, 11:23 PM   #24
alkasar is offline alkasar  France
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Hello Cristi,
is the Vaux on SMPS250 strong enough to power an external device (a dac) at 5,5V / 1A max ?
thanks,
 
Old 23rd May 2010, 09:31 AM   #25
TCx is offline TCx  Czech Republic
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Hi,
I am much interested in the new version of SMPS-500 with aux voltages. When is it going to be available?
Is its main voltage adjustable? That would be great!
Thanks.
 
Old 24th May 2010, 02:33 PM   #26
Cristi is offline Cristi  Europe
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the new SMPS500R is available already, Connexelectronic
this use resonant topology, and has the output regulated. there are 110V and 230V versions available. i prefer not to use a switch for both 110V and 230V compatibility, for better efficiency and reliability.
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Old 24th May 2010, 02:35 PM   #27
Cristi is offline Cristi  Europe
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Quote:
Originally Posted by alkasar View Post
Hello Cristi,
is the Vaux on SMPS250 strong enough to power an external device (a dac) at 5,5V / 1A max ?
thanks,
the SMPS250 can provide about 200mA on the aux. supply and up to 500mA when the current draw from main voltage is at least 0.5A. the required current, 1A at 5.5V is too high and will overheat the heatsink since there is a linear postregulator which make this voltage from a higher one.
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Old 24th May 2010, 03:31 PM   #28
TCx is offline TCx  Czech Republic
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Quote:
Originally Posted by Cristi View Post
the new SMPS500R is available already, Connexelectronic
this use resonant topology, and has the output regulated. there are 110V and 230V versions available. i prefer not to use a switch for both 110V and 230V compatibility, for better efficiency and reliability.
Thank you, that's great!
What aux voltages does it provide at what max. current?

I would like to try to use this SMPS with several amp modules which need different votages - from +-35V to let's say +-60V. Is it somehow possible to adjust the main voltage of this SMPS within this wide range?

Thank you, I appreciate your great support!
 
Old 24th May 2010, 04:31 PM   #29
Cristi is offline Cristi  Europe
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the aux. voltage is 2x20V DC, at max. 0.5A. the main voltage is adjustable within max. +-10%, that's because the topology used requires tight output voltage to maintain the operation within ZVS range. the output voltage can have one of the following values: +-30V, +-40V, +-50V, +-60V, +-70V all +-5-10% adjustable
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Old 25th May 2010, 02:59 PM   #30
TCx is offline TCx  Czech Republic
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And the aux voltage is fixed or adjustable?
 

 


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