Alexandre Guimar=E3es wrote:
>=20
> Hi, Roman
>=20
>     I hope you are felling better. Motorcycles can be very dangerous
> sometimes. I know many people that reconsidered that option of
> transportation because of the risks. Sometimes the crashes get more sca=
ry
> than the fredoom fellings. Take care..

Hi Alexandre!! Thanks for the concern. :o)
I prefer to die on my wheels than live on my
knees, sometimes safety is less important than
living life to the fullest? But at least I
wear good safety gear, my full leathers and body
armour saved me from massive injuries. You should
see what's left of my helmet, it would be perfect
to show to young motorbike riders...

>     No getting back to the SMPS. I will have an application where I wil=
l
> have to make a supply with 74 volts DC input and 24 v at 300 ma and 5 v=
 at
> 30 ma. I am thinking about using 2 of your 2 transistor designs modifie=
d to
> the my specific needs. When I finish it I will let you and the list kno=
w how
> it goes and what modifications are needed.

Sounds like a good application. For the 5v 30mA
supply you only need a tiny cheap inductor, and
even 24v 300mA you should get away with a small
pre-wound inductor like they use in speaker
crossovers. 6x8mm and 10x14mm are commonly
available in that inductance range. I tested my
circuit to 300mA with no drama but watch the
volt ratings of your Q1 transistor.
I look forward to seeing your design! :o)

>     You, Russel and Dave gave us one of the most interesting threads th=
e
> list has had in quite a while. I hope I can give back some information =
from
> the gained knowledge.

I forgot Dave! I just added his name to the web
page, sorry Dave. :o)
-Roman

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