Can you please provide some informations how do you do calculations for the transformer in this topology? I think, I already asked this questions several years ago, you said, you will write an article but unfotunately it is never happened. Or did I missed this article?
In future please make a video on dual rail supply like 85-250 vac to +12 0 -12 dc. I want to take suggestions from that then I will try to build a +45 0 -45 10amp version😅
I dont understand one thing how is the ic IC1 able to survive such high DC voltages coming in from the transformer ? Even though its dc it will be greater than 100 volts right ?
I see there is a similar example circuit in the DK106 data sheet. They suggest input turns 192, output turns 25 and a P/S/P winding pattern to reduce leakage inductance. Now I'm just wondering about wire diameter to use.
@@MyVanitar Thanks. I can imagine that 192 turns with very small wire diameter requires patience and precision, you would probably want to wind it in one go, not making complicated layers.
@@MyVanitar I would have chosen a fusible resistor on the input for inrush protection. And a small diode in series with the zener to offset temperature drift in the regulation. On many commercial units the primary to secondary windings have no sufficient insulation to stop transients.
Yes, a fusible resistor is a good option instead of an ordinary fuse to reduce even more noise, however, it's a bit difficult to find in traditional component shops. You can solder it "standing" instead of that fuse on the PCB
useless is yourself, if you check other comments he mentioned other information (transformer, ... etc) is available in the article. you just watch 2min of any video and think creators are your servant 😅
DIY AC-to-DC 12V Flyback SMPS For Beginners
Can you please provide some informations how do you do calculations for the transformer in this topology? I think, I already asked this questions several years ago, you said, you will write an article but unfotunately it is never happened. Or did I missed this article?
DK106 is a good selection 🎉
What is your THD at what power level? What regulatory specifications does it meet?
prepare the budget and equipment for me to invest time and test whatever you like :-)
In future please make a video on dual rail supply like 85-250 vac to +12 0 -12 dc. I want to take suggestions from that then I will try to build a +45 0 -45 10amp version😅
I'll design an F35 just for you, why not
@@MyVanitar that would be awesome.
Bro where is the schematic, the altium link only pcb design obly
I dont understand one thing how is the ic IC1 able to survive such high DC voltages coming in from the transformer ? Even though its dc it will be greater than 100 volts right ?
No, check the datasheet and block diagram of the chip
You did not share important things
1.How did you calculate rc snubber and
2. how did you calculate numbers of truns
They are mentioned in the article which will be linked in the description (Article: ...)
I'm also interested in how to calculate the transformer.
I see there is a similar example circuit in the DK106 data sheet. They suggest input turns 192, output turns 25 and a P/S/P winding pattern to reduce leakage inductance. Now I'm just wondering about wire diameter to use.
PSP is so-so for low currents (the effect is small), also it's difficult for people to wind on a small bobbin. wait till I put the article link
@@MyVanitar Thanks. I can imagine that 192 turns with very small wire diameter requires patience and precision, you would probably want to wind it in one go, not making complicated layers.
Great project. But 50 years ago we built linear 12V supplies 100 different ways, then switching came in and zillions have been built since.
the only way to learn is to practice. most cheap supplies you see on the market do not follow the design standards. they just work "somehow"
@@MyVanitar I would have chosen a fusible resistor on the input for inrush protection. And a small diode in series with the zener to offset temperature drift in the regulation. On many commercial units the primary to secondary windings have no sufficient insulation to stop transients.
Yes, a fusible resistor is a good option instead of an ordinary fuse to reduce even more noise, however, it's a bit difficult to find in traditional component shops. You can solder it "standing" instead of that fuse on the PCB
What about 5 V version?
that's easy, probably in a short video, I'll let you and others know
Pl. show transformer Construction in details. like start of winding Dot convention in Transformer other wish Video is useless.
useless is yourself, if you check other comments he mentioned other information (transformer, ... etc) is available in the article. you just watch 2min of any video and think creators are your servant 😅
check later on for the article link in the video description