smps schematic with pictures

[duikkie]

i am hopeless with finding thing on internet

but are there sides with electronic things with scoop pictures

as simple as a trafo if i put 220 ac too 12 volt is the picture on prim and sec side ( i can't find it)

of course i what pictures of a smps transformer with pictures


but how is it called to look for with google ? electronic scoop pictures ?

i am happy with anything ( low -pass filter to blok pictures of a ne555, ossilators with components)

if i find a side which explains thinks is it mostly to simple ( with cars half full on the prim side (trafo), and less car full at the sec side) (p=u*i===p=u*i)

but i want scoop pictures !!!

[poink]

Have you tried a design guide? For instance, this one by OnSemi, has both the basic circuits, and the waveforms you'd expect for a working SMPS, albeit without all the filtering and safety components.

Per component detail tends to drop off for the full application circuits; but if you want to really dig down on one of those; perhaps make a low voltage (eg., DC to DC) one on the bench[1] or in a circuit simulator like SPICE?

[1] Voltages in a mains powered SMPS are over (or at least very close to) to a scope's limits; you need an expensive high voltage differential probe...

[duikkie]

that spice is that free ware ?

i know about high voltage therefor i need internet to see what the picture is.

i will study the pdf file but i think i understand the theory.

Have you tried a design guide? For instance, this one by OnSemi, has both the basic circuits, and the waveforms you'd expect for a working SMPS, albeit without all the filtering and safety components.

Per component detail tends to drop off for the full application circuits; but if you want to really dig down on one of those; perhaps make a low voltage (eg., DC to DC) one on the bench[1] or in a circuit simulator like SPICE?

[1] Voltages in a mains powered SMPS are over (or at least very close to) to a scope's limits; you need an expensive high voltage differential probe...

[1024MAK]

Talking of PSUs and SPICE (it is a series regulator rather than a switch mode type though).
More SPICE here!

Mark

[poink]

that spice is that free ware ?

There's several free and/or open source versions of SPICE. Very powerful, not necessarily the easiest thing just to pick up and use (as is fairly typical of EDA tools, of course).

[dp11]

For PSUs the you want LTSpice : http://www.linear.com/designtools/software/

[duikkie]

Off course you have more versions

which one to draw and simulate the hole
bbc psu ?

For PSUs the you want LTSpice : http://www.linear.com/designtools/software/

[duikkie]

maybe i am to stupid for this sort of programs ?

i can't find the symbool to get power on ??

simple a registor r1 r ?? how to put value in ? symbool of gnd is there

but symbool v1 from examples i don't know where ???

so 5 volt over a R to ground ??? to measure

5 volt r1 then r2 to gnd . measure voltage between r1 and r2 if i can not put power symbool then nothing can run

that spice is that free ware ?

There's several free and/or open source versions of SPICE. Very powerful, not necessarily the easiest thing just to pick up and use (as is fairly typical of EDA tools, of course).

[duikkie]

hopeless

[duikkie]

there must be 5 volt no 0.00 mv

[poink]

there must be 5 volt no 0.00 mv

What you've got there is pretty much just a couple of resistors on the negative terminal of a battery. Hence, the reading looks correct; there's no potential difference anywhere (except across the voltage source itself).

somethinglike.png (4.87 KiB) Viewed 659 times

[duikkie]

oke there is a symbool for gnd but the voltage symbool is for neg and pos

we learn everyday more and more

there must be 5 volt no 0.00 mv

What you've got there is pretty much just a couple of resistors on the negative terminal of a battery. Hence, the reading looks correct; there's no potential difference anywhere (except across the voltage source itself).

somethinglike.png

[duikkie]

how do i get ac as power ?

i know for working order there must be 130khz pulse on collector q3(=q1)point by r18(=r2)

l3 is not connected. and one R by the diverder

what am i doing wrong ???

see allso the psu by hand item

osc5.zip is zip file for ltspice 4

[duikkie]

pictures

[poink]

how do i get ac as power ?

There's usually a voltage supply component with the AC (wiggly line) sign on it.

You don't want a voltage supply at both ends though.

In some cases, you might find a load resistor across on the output helpful (to simulate there being a beeb attached).