- Question 2 The Circuit In Figure 9 Is A Basic Zener Diode Regulated Full Wave Rectified Dc Power Supply Each Diode In 1 (42.44 KiB) Viewed 32 times
Question 2 The circuit in Figure 9 is a basic Zener diode-regulated, full-wave rectified, DC power supply. Each diode in the bridge rectifier has 0.1 V forward conduction voltage. The mains input voltage is 230V rms at 50Hz and the transformer turns ratio is 15:1. You may assume negligible ripple voltage on the capacitor C. State any assumptions made. Ve Rlimit Vin 230 V rms. www RL 15:1 VZener Figure 9 [10% ] Given the transformer has 15:1 turns ratio, and VZener = 10V, calculate Rlimit such that the Zener diode dissipates 1 W when RL is open circuit. (b) Given the result of (a) above, what is minimum permissible value of RL, RL(min), which just [10% ] preserves the Zener diode regulation action? What will the power dissipation in Rimit be when RL=0.0? [5%] very large