How this power supply work?

[navidrct]

Hi
This power supply is 3w and its small.
I want to build something like this.
Size matter to me
What topology should I use for small power supply?



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[Maobuff]

It's looks like a switch mode power supply, do you spot coil on it?

[navidrct]

It's looks like a switch mode power supply, do you spot coil on it?

no there is not

[navidrct]

The component with the blue tape looks to me like a transformer high frequency type, most likely a self osscilating flyback.

That what I think too

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[Kjelt]

So step 1: reverse engineer the schematic, write it down and post it here.

[navidrct]

So step 1: reverse engineer the schematic, write it down and post it here.

I'm on it

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[ataradov]

Also, watch numerous light bulb power supply reverse engineering videos by bigclive - https://www.youtube.com/user/bigclivedotcom

[navidrct]

Also, watch numerous light bulb power supply reverse engineering videos by bigclive - https://www.youtube.com/user/bigclivedotcom

Thanks allot

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[navidrct]

Also, watch numerous light bulb power supply reverse engineering videos by bigclive - https://www.youtube.com/user/bigclivedotcom

thanks alot