question 2

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Calculate the pic rating of the diode used in the full wave rectifier shown as . Also find the maximum DC voltage that can be obtained from the circuit. mark the polarity on the millimetre. 

Solution :-
Number of turns in primary binding Np = 1000
Number of turns in secondary binding Ns = 50
Vp = 220 V
Np/Ns = Vp/Vs
1000/50= 220/Vs
Vs = 11v
Vrms = Vm/√2 
=> Vm = Vrms √2
=> Vm = 11 √2
Vm = 15.5563 v

Vdc = 2Vm /π
Vdc = 15.5563/π = 9.90V
I = V/R => 9.90/1×1000
I = 9.9mA
PIV = 2Vm = 2 × 15.5563  
PIV= 31.112 V

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