When SCR T1 is ON this means T1 is shorted then we can say capacitor upper plate's negetive voltage is applied on the SCR T4's anode and capacitor's positive voltage is on T4's cathode. SAME WITH THE T3. We know that thyristor have +Vs if anode is at positive voltage. As the capacitor discharges the -Vs on T3 T4 also reduces...
Because of two reasons 1. Capacitor (T1 T2 k ON time me) T3 T4 k liye OFF krne ka kaam kr rha h. 2. Capacitor output me 2 guna voltage de rha h. (As the teacher explained Vo = Vs + Vc = 2Vs
Can you please tell me how at t=0 voltage across thyristor T3 and T4 is (-Vs)?
That's because of capacitor is charged with Vs being upper plate negetive!
When SCR T1 is ON this means T1 is shorted then we can say capacitor upper plate's negetive voltage is applied on the SCR T4's anode and capacitor's positive voltage is on T4's cathode. SAME WITH THE T3.
We know that thyristor have +Vs if anode is at positive voltage.
As the capacitor discharges the -Vs on T3 T4 also reduces...
mam yha ye capacitor kyu kam me liya h
Because of two reasons
1. Capacitor (T1 T2 k ON time me) T3 T4 k liye OFF krne ka kaam kr rha h.
2. Capacitor output me 2 guna voltage de rha h.
(As the teacher explained Vo = Vs + Vc = 2Vs