# design double switch forward

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#### rajabi_u

##### Newbie level 5
double two transistor forward

hi all
can you help me?
i want design double switch forward that input voltage was 230(+10%;-15%)v:
output voltag was 12±1% v;output current was 20A ;
this switch should be controlled by IC SG3842;
if you knew which book is good for this desine ;that is very good for me.
thanks a lot
rajabi

#### v_c

sg3842+application note

and you will find quite a bit.

Take a look at this application note for example
www.fairchildsemi.com/an/AN/AN-7004.pdf

Study the section on the two-transistor forward converter and see what
devices are being used and then you might want to browse more application
notes and I am quite certain you will find enough information to put
together a design.

Best regards,
$v_c$

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#### rajabi_u

##### Newbie level 5
double switch forward converter

Hello v_c;
Can you give more becase for design transformer and control by IC;i have problem.
Thanks a lot of.
Regards

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