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Self oscillating flyback converter

anditechnovire

Jun 11, 2020
5
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Jun 11, 2020
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Please am studying about switching power supplies, starting from the simple ones. I've just concluded on joule thief and blocking oscillator, now am progressing to Self oscillating flyback converter(or RCC) and am finding a bit difficulty on how the transistor switches OFF.
It seems the transistor switch off concept is quite complex than the switch ON process. Some say the operating principle is very much the same to that of blocking oscillator, but i think the are some contrast.

https://homemade-circuits.com/wp-content/uploads/2012/05/cheapestsmpscircuit.png
Here is an example of the RCC smps diagram.
 
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