smps from 220/230V

aurimukas · 8th March 2011, 02:47 PM

Hi, I need 230V SMPS scheme with current stabilization for LED circuit. Maby somebody have one?
sorry for my mistakes- my english knowledge is not very good.

Thank you, have a nice day

kubeek · 8th March 2011, 04:57 PM

How much power do you need? If it is for just one LED, then you can use a capacitor in series to get the right current through the diode and antiparallel diode to shunt the reverse high voltage.

lorylaci · 8th March 2011, 04:59 PM

Chech for TOPswitch series ICs, in their datasheet there is sample schematic with layout too. You can get them from 20W to 200W, they can stabilize the output, by stabilizing the voltage on the series resistor, you can use them for stabilized current drive of LEDs

aurimukas · 8th March 2011, 05:12 PM

power is low. This power supply is for ~30 LED. I have to made smps with stabilization of the current. It's my course work

kubeek · 8th March 2011, 10:37 PM

What are you allowed to use?

aurimukas · 9th March 2011, 06:26 AM

Quote:

Originally Posted by kubeek

What are you allowed to use?

everything

internet, books.... my work is oriented to the brightness adjuster (PWM regulator), but I can't find SMPS scheme (or don't know how to search

). what do think about this http://320volt.com/wp-content/upload...2x30-volt-.gif I think this LA494CN is for current stabilizing.?

kubeek · 9th March 2011, 03:57 PM

The 494 is there for voltage stabilizing based on the 39k-10k output divider.

8th March 2011, 02:47 PM	#1
aurimukas diyAudio Member Join Date: Mar 2011	smps from 220/230V Hi, I need 230V SMPS scheme with current stabilization for LED circuit. Maby somebody have one? sorry for my mistakes- my english knowledge is not very good. Thank you, have a nice day

8th March 2011, 04:59 PM	#3
lorylaci diyAudio Member Join Date: Aug 2008 Location: Dabas, Budapest	Chech for TOPswitch series ICs, in their datasheet there is sample schematic with layout too. You can get them from 20W to 200W, they can stabilize the output, by stabilizing the voltage on the series resistor, you can use them for stabilized current drive of LEDs __________________ Olyan nem volt még, hogy ne lett volna valahogy

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8th March 2011, 04:57 PM	#2
kubeek diyAudio Member Join Date: Dec 2005 Location: Prague, Czech Rep	How much power do you need? If it is for just one LED, then you can use a capacitor in series to get the right current through the diode and antiparallel diode to shunt the reverse high voltage.

8th March 2011, 05:12 PM	#4
aurimukas diyAudio Member Join Date: Mar 2011	power is low. This power supply is for ~30 LED. I have to made smps with stabilization of the current. It's my course work

8th March 2011, 10:37 PM	#5
kubeek diyAudio Member Join Date: Dec 2005 Location: Prague, Czech Rep	What are you allowed to use?

9th March 2011, 03:57 PM	#7
kubeek diyAudio Member Join Date: Dec 2005 Location: Prague, Czech Rep	The 494 is there for voltage stabilizing based on the 39k-10k output divider.

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