DonNews #07 23 апреля 1999

Железо

Protection VG93 - extend the life of VG'shkam.

Snake \ OHG


         Extend the life VG'shkam!


   Over the past year I have burned about
15 (!!!) VG'shek, and I must VG'shki 3-m
people (as I still suffer?).

   I know that all these things because of the block
power, but what a climb it (a miracle that he
generally works), it was easier to make kakuyunibud defense 
that I did. 

   I do not know how from a scientific point of view, but
VG'shki me more (so far) do not burn
(Thank god).

   Tests showed that the SH is on when
on it is 12V, but there is 5V. Therefore, this is what
I did:

   cut off from the 21st foot VG'shki 5V, set
stabilizer on the integrated circuit
KR142EN5A type, in which filed a 12B to 40th
SH feet, and 5V output from Krenek filed for 21yu
SH leg. Krenek is on my board
computer without a radiator, as it
not hot.

   Now 5V to 12V SH depends on, and on it
will either both stress or no.


   Another variant of such protection to me
gave Shaitan, it is used instead of Krenek
stabilizer on stabilitrone.Vot scheme:


           40 R


      SH +12



                       VD1 VD2


                    \ / / \

           21


            +5 V


   R - 0.58-1K,

   VD1 - anyone

   VD2 - KS147.


   This scheme has not been tested me, but
Shaitan'a is a long time and regularly
work.

   So, I think it's someone helps, and
VG'shki will burn less.