Answer / karthik & chandrashekar

yes,because is ha used as a auxillary power supply means it
will generate the small voltage(+5v ,+0v, +2v) and we can't
get this small voltage in genaral dc power supplies units.

from ABB (ACS 550) PEENYA BANGALORE

Answer / ajay singh

SMPS is a AC to DC converter so its use as a dc supply.

Answer / shinyvikram ganji

smps is a kind of dc-dc converter.
smps are very sensitive and compact and they are free of
ripple content in there output.thats why there are used in
most ofthe electronics devices today.

smps also works on ac supply
ac-supply--->rectifier---->dc-dc converter--->filter---->o/p

Answer / nisha

smps stands for switched mode ( switching mode) power
supply.This can be used for both ac-dc conversion and dc-dc
conversion...so there is no doubt it can work in dc supply

Answer / sunil parmar,nirma uni.

yes,SMPS can work in a DC supply ----
simple conv. function with AC supply in SMPS

AC--step down to AC---rectified to DC---further step down
to required DC---filtered---o/p

now conversion procedure with DC supply in SMPS

DC---with the help of chopper converted to required DC---
filtered---o/p

plz vote for my answer..
for reply or disagreement mail me at
parmar20072008@yahoo.com

Answer / ali

yes as we know smps works DC

smps does two important thing

1 to channe AC to DC
2 to Reduce to volate

Answer / vikas v

Yes ,If it doesnt have input step down tfr.

Answer / raman

YES,PREVIOUSLY IT IS GETTING AC TO DC.
SMPS STANDS FOR SWITCH MODE POWER SUPLY.
IT IS NOT NORMAL POWER SUPPLY, IN NORMAL POWER SUPPLY WE
CANNOT ABLE TO GET DIFFERENT VOLTAGE AT A TIME. BUT IT IS
POSSIBLE IN SMPS WE CAN GET +5V,-5V,12V,-12V,0V ETC.

Answer / mrt

a smps is a switched mode power supply.it is a switch
between one supply to other.it can operate in AC as well as
DC

Answer / a.mitra

yes,smps works in dc supply.we know that ac means high &
low supply,but smps needs stable supply oparate,so smps
works in dc supply.(A.Mitra,ultadanga)

what happen if turbine trip ,g.c.b not open and excitation on condition?

1 Answers  

why master trip(86) used in eletromagnet?

1 Answers  

For 7.5kw star delta starter how to calculate 1. Mccb rating 2. Contactor rating 3. Over load relay rating

1 Answers   L&T, MAHINDRA,

what is F.A.P in fire alarming system?

3 Answers  

What is the difference between Delta & Wye windings?

0 Answers  

how many testing is necessary for 27 MVA transformer?

1 Answers  

What happen if we give resistance to the armatuure of a dc motor?a

1 Answers  

we r having 3 core 3 1/2, 4 core cables how we can know this cable has to be used for this purpose?

5 Answers  

Dyn1 transformer vector group testing how to do

0 Answers  

Sir, My doubt on cable sizing calculation, Load:74 KW calculated cable 1 run 50mm2. Now client asking us to reduce cable size by increasing runs. Sir, My question now when my mind strikes with 2 options 1) Divide load 74/2 = 36 and calculate cable for 36+36 making it 2 runs or 2) Simply i can divide 50mm2 /2 ie. 2 runs of 25mm2 Please suggest me sir

0 Answers  

why we use REF and Differential Protection in one transformers?my doubt is both protections are operated in internal fault only.why we want to use 2 protections?please clarify.

7 Answers  

What is the purpose of taking Capacitance and Tan Delta Test in Transformer bushing?

1 Answers