SCR always short when it failed, so the current of the SCR will much more than usual.

Joseph is right in asking his question. Solution depends on the end purpose of doing this rectification

thanks Mr.Gericota..that application note clarified me.

Thank you for answering me. I want to know how the digital generator work and how can we control the maesurement by using it?

Ok i got it...

The damping constant depends of the application: in motion control you can´t afford overshoot (think in a CNC lathe, where the x axis departs as z arrives; if there is overshoot, goughing of theThe damping constant depends of the application: in motion control you can´t afford overshoot (think in a CNC lathe, where the x axis departs as z arrives; if there is overshoot, goughing of the workpiece occurs). In other example think in a temperature control, where the overshoot burns the material. In other applications you just need fast response and you can live with certain overshoot. In that case you can adjust with underdamped constant. So 0.7 is not universal.

Thanks Prabhjot for the reply. I really find it satisfactory.

Ac v -110v, f - 50hz i- 90ma c - farad c is--i/m*v*f and m is 6.28 0.09/6.28*110v*50hz is 2.6 micro farad

The IGBT has low input impedance as compared to IGCT. Also gate terminal is made up of conductive material & alloying thats why source-Drain conduction is easily done with the help of gate terminal.The IGBT has low input impedance as compared to IGCT. Also gate terminal is made up of conductive material & alloying thats why source-Drain conduction is easily done with the help of gate terminal. Also one thing is mentioned here cyclic resistance is depends on temperature(Collision between majority cahrge carrier) & it get reduces if temp. is increase this reason is also sufficient to clear that in IGBT Majority Charge carrier collides rapidly . such case is happen in IGCT but ratio is 40:60. (60% in IGBT & 40% in IGCT)............. I hope you read & examine all basics of power electronics Devices.......Good & Best Luck

Thank you i'll try it

Dear Mircea, That is right, you validate what I said in practice. Please, be aware with time const. T = RC !

okay ! I agree .

In electronics, cutoff frequency or corner frequency is the frequency either above or below which the power output of a circuit, such as a line, amplifier, or electronic filter has fallen to a givenIn electronics, cutoff frequency or corner frequency is the frequency either above or below which the power output of a circuit, such as a line, amplifier, or electronic filter has fallen to a given proportion of the power in the passband. Most frequently this proportion is one half the passband power, also referred to as the 3 dB point since a fall of 3 dB corresponds approximately to half power. In communications, the term cutoff frequency can mean the frequency below which a radio wave fails to penetrate a layer of the ionosphere at the incidence angle required for transmission between two specified points by reflection from the layer.