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Have a quick look at the latest circuit I posted above. It doesn't have that drop out problem.
Regarding the ccled circuit above, with vin=42v,and iled=7A, and Vled=30v, As you know we see 75W dissipation in the fet and 5w dissipation in the sense resistor. (as shown in the below schematic). I appreciate that you already know this, and that we must present Greg this circuit in case Greg does not want to lay out a pcb......though that is a fair bit of power there....We possibly hope nobody accidentally switches it on when its on dry land.
Having said that, at vled=30v, and iled = 7A, there is 210W dissipation from the LEDs alone, so I suppose an extra 75W is not so bad.
You have to suspect that at these dissipations of the led bank, non sharing of current will creep in and the leds will go bang
Gregory...you need to download LTspiceIV. Its a free circuit simulation program, and its damn great! It opens acs files.FLYBACK could you post the buck lead driver in jpg or PDF as I can not open the file asc. Post 94
Thank you.
Nice to be part of this small community that's so knowledgeable. What's great is that people have different expertise, and levels of experience, so its a fantastic place to learn.Hi Cicero
My heart just want's to burst when I see something good coming out of South Africa. Having you here and active and posting makes me proud.
Me, very Negative . But I have probably been around the fodder here too long....Eight Years is a long time stuck in the midst of this...
Elon Musk (South African) and Tesla released this Video that is busy going Viral....
Warning...strong language.
Nice to be part of this small community that's so knowledgeable. What's great is that people have different expertise, and levels of experience, so its a fantastic place to learn.
Haha, what a vid.
I'm the same as you at times, South Africans like to complain, but can be a patriotic bunch as well at the same time.