| mehrdad |
| I Need a +/-70 Volts Smps.can anyone help me please? |
|
|
| peranders |
I'll suppose 230 VAC in?
If you don't know anything in the subject, I must tell you that this is not trivial, hardly suitable as DIY unless you have a well tested kit. |
|
|
| mehrdad |
No No...
It`s For car audio.With 12 v Input. |
|
|
| Eva |
| If you are in a hurry go for the classic push-pull unregulated stuff. Use series secondaries if you want higher power and easier winding. Use the search function, this topic has been covered many times in this forum. |
|
|
| mehrdad |
please explain some more.
for example in the rod`s schematic for getting -/+70 volt in output what i must do??
can i use two series of mosfets and two troids whit one SG3525 and connect the +35v of one of triods to -35v another one?
if its possible can i get the same current??
Thanks. |
|
|
| ssanmor |
Hello, mehrdad.
I wrote that article at ESP. IMHO it is much easier if you simply multiply the number of secondary turns by a factor of 2 approx (with respect to the original +/-35V design).
In a nutshell, if you use 4 + 4 primary turns, you will need approx. 28+28 secondary turns. That will give you a bit more, but assuming that you are going to make it regulated it allows some margin.
If you are going to make it unregulated, in order to decide the exact number of secondary turns, you must decide whether you can tollerate bit higher rails for slight load condition just to get the +/-70V at full power, of you need to have máx +/-70V and you can assume a reasonable drop with full load (also depends on your 12V source regulation).
Best regards,
Sergio |
|
|
| mehrdad |
Hello
hey .i didn`t knew you`r Mr sergio .oh thank god.
you know i`m so happy for this conversation.
Thank You So Much for your guide.
If you tell me about voltage feedback i`ll begin. |
|
|
| djQUAN |
| what amplifier section will it be powering? |
|
|
|
