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No we can't disable sd card section and test.because we boot the device using sdcard. without sdcard there is no option for our device to boot.
One more points to be noted,high voltage generation circuit(nearly 200v from 5V) has transformer and high switching MOSFET. is anybody know how to...
yes you are correct. we have sdcard section which is operating at 48Mhz.what we can do for that? any solution?
already we tried of using copper shield over transformer,but no use of that shield.that dc-dc operating at 150khz. we thought that DC-DC switcher is causing the problem.thats why we...
Thank you for your reply!!!
Where we can put the ferrite bead? input/output side.
Already we put 10uF(4 nos) at input to that transformer. we tried of putting shield over the transformer,but nothing helped.
Hi All,
our product is very similar to TABLET.last week we gone for EMI/EMC test.product got passed in Conductive Emission but failed in RE @ 40-60MHZ. our circuit has one dc-dc switcher with step up transformer for generating 200v power.
Please provide me suggestion to pass in EMI test.I want...
thanks for your help...i want to know what is the process going on inside the LDO when i connect a load with 500mA instead of 100mA...operation of LDO if load varies....is it clear??? how the voltage is stable eventhough i vary the load??? what is happening.....
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Hi friends!!
we all know about buck converter as well as LDO.....is there any specific reason???in any circuit we have to use buck instead of LDO and vice versa...i want to know..where we are using LDO??? where we are using buck converters?? is there any criteria for using both...
HI....
Thanks 4 ur reply.....i refered the site mentioned below....
http://hyperphysics.phy-astr.gsu.edu/hbase/solids/fermi.html
first u just tell what is meant by chemical potential???
what i understood is...fermi level is a level which is present in between valence and conduction band...
hi friends!!
what is meant by fermi level??? i refered so my sites but i didn't get any clear idea about that...if any one knows please share with me...meaning of fermi level?? what chemical potential means?? where this fermi level used??
hi frnds,
what is the use of power management IC??? TWL6030 is also one type of fully integrated power mgmt with switch mode charger....i read that datasheet bt i cant fully understand....plz tell me what is the use??? it seems to be a power supply for proc,m/y,audio ic.....it may...
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