9V-to-5V Step-down concep design

the thing

switching wave-forms at max.-min. load

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[Eop]

9 to 5V test (a bad but interesting example)

the control does not work quite as i planned but i got it to work a bit differently (but as so there's no credit it won't fail at certain condition)

(the predecessor) constant load/drive test

the pwm must be set to predict to mach it's effect on input – output voltage + output current draw and the change to the all of previous - - is possible but may complicate the control and add significant power draw . . . it'd also slow down the simulation .. .. .. but i will likely at some point run such . . .

right now buying any available switching controller is a better option

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[Eop]

Web Buck Remake

src. :: http://www.talkingelectronics.com/projects/LEDTorchCircuits/LEDTorchCircuits-P1.html

somehow it did not "work"/simulate too well
???

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experimental/unfinished mod. :: with "pulse skipper" for low loads
/// i have no any idea at this point how one should tune the real circuit into proper operating mode . . .

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mc34063 test

the following uses the 34063 model from Simulating the MC34063 in Inverter Configuration with an Accurate TL431A Model and has nothing else to do with that experiment . . .

PS! -- this is the second time i try to make sense of this chip -- i don't even intend to achieve something -- just studying ↓what is happening there↓ !!!

in images

(top-dn , lf-rg)

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more :: with a short circuit and external switch

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Switching TEST draft

Blah , i don't get the sh¡t ...
... U can't use N avalanche FET coz it ?? closes impossibly slow (kills efficiency) ... ... so increasing the fq. enables smaller steps less output waving . . . but also requires higher power driving (less efficiency) ... + THAT cfg./concept does not like inductors

Random

I've B'n B.C by s w i t c h i n g step-Dn voltage regulators'

1. the Motorola's Sample :: [pg.10 of 17] i didn't manage to get it going right in Spice ...

2. My old regulator redesigned and re-redesigned to a switching regulator (since i knew what it does)

XD 120% efficiency XD XD XD


3. the Motorola's Sample re-designed ::

meeting it'sssspecs -- virtually

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Google-Fun :: the editor malfunctions switching back to HTML-edit and back to Compose-edit ... ;X

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hei ho o°B -- IT wORks !!! -- hi-hi he-he blawlaap <-typo vvv>ˇ·,,·ˇ<vvv muhahaa <-another

LED-logic - since i got old LED-s and BJT-s

C2611 , 1N4007 ... resistors

here some fun ...

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