This video started as a simple look inside some generic 12V 2A power supplies intended for LED strips.
But then.....
But then.....
One moment please…
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nice
I love the built in mystery feature – an LED to show that it's on, hidden in an opaque case so only insects that somehow manage to get in the case can see it.
धन्यवाद 🙏🙏
So educative may GOD bless you
my same charger.. not working sir .. please tell me how to trace problem n rectify
iv seen the same windings on transformers teardowns on "Diode gone wild's" channel, where the secondary is between two of the primaries windings but not centre tapped to the board!!! but always on cheap chinese PSU's…
Clive when do you let us see that you after unwinding the transformer to rewind it as you would do that would be interesting to see and also very educational that would be my ultimate video 👌let me hear what you wonna do or ask the people what they think greetings from the Netherlands keep up the good work love your channel Dinant de Kruijff
That red led would get nice and hot inside that case 🔥 and it's a dead give away that it's repurposed.
Thanks for the upload. ps You can soak the seam in petrol with a rag or brush. Then it should come apart.
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Excelente schem analysis, thanks for sharing I feel more confident on smps day by day
Your current 230vac or 115Vac
If you put those transformers in boiling water, the core pops right apart😜👍🏼
As others have already stated, the split primary is actually very common on the “better” power supplies. The coupling improves efficiency and with the proper optimized ratio of turns between the two sections balances transient noise. One item that seemed to go without notice is that the circuit type is called Flyback. That means the stored energy in the core is mainly transferred to the secondary when the primary is switched off, (with a small portion dissipated in the snubber). That along with the turns ratio and the snubber network determines the raw secondary voltage and finally the optocoupler loop feedback fixes it. With this principle you can get universal primary voltage. Would not happen with Forward Converter without more complex PWM control. You can see the difference in the winding direction between the primary and secondary, which would also have deserved a note pair of Dots on the schematic.