220v to led testing

121

01:21:16

2 circuits, different caps. Are those things safe / real?

published 12 years ago

Chryseus

12 years ago

It works fine but it's really not recommended since there is no mains isolation such as that provided by a transformer.

ilzul

12 years ago

Yea, thats why i was asking if its safe without transformer. I have one of those things on my desktop and seems that the capacitor is burnt

adrien1018

12 years ago

Normal capacitors cannot support a 200V voltage.

ilzul

12 years ago

And then how a 224j 250v capacitor can do the trick?

hurz

12 years ago

2 comments, first why DC 220V plus some AC? Change to 311V AC only which will result in 220V effective. 2. The second circuit is to low in capacity its dominated by resistive voltage drop which result in about 2Watt power disipation for your poor 22kOhm resistor

ilzul

12 years ago

Thank you! I am sorry for my mistaked, did edited it...

cliffyd333

12 years ago

Try harder

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