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i am swathi, b.tech 4th year.
In smps(switched mode power supply)we are using
diodes,mosfets,igbts for controling of current.
And my question is why we did not use thyristors(scr)? it
is also act as a switch,then what is the drawback of scr as
compared to above transisters> if we use the scr,then what
is happening ? plz give reply as soon as possible bcoz i
am doing project on smps. plz frnds i want ans for
that. if anybody know the ans plz send to my e-mail
id /swathi.tadakapally@gmail.com/
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Answer Posted / g venkateswarlu
hi dear swathi,as per your question SCR act as switch but it is current controlled device and its operating frequecy is 400-500hz, voltage drop less than 2 volts,and its application are dc motor control and rectifier and inverter. where as MOSFET AND IGBT voltage control device and above nithi ans also correct
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