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Draw the circuit diagram for bridge rectifier. Explain it and deriv equations for Idc3, Irms, Vdc and ?.
1 Answer
written 3.9 years ago by |
(i) IDC=1π∫π0Imsinθdθ=Imπ[−cosθ]π0=2Imπ
(ii) Similarly, VDC=2Vmπ
(iii) I2rms=[1π∫π0I2msin2θdθ]
=1π.I2m∫π01−cos2θ2.dθ=1πI2m[θ−sin2θ2]0π=I2m2π.[π−0]=I2m2⇒Irms=Im√2
(iv) $\eta= \dfrac{P_{DC}}{P_{AC}}=\dfrac{I_{DC}^2 \times R_L}{I_{rms}^2 \times (R_L+R_D)} = \dfrac{(2I_m/\pi)^2 \times R_L}{I_{m}^2/2 …