Ig Exercise 2: We consider the circuit of figure 2. The nominal value of E is equal to 20V. This voltage is reduced to the E value U using the resistor R, and a Zener diode with characteristics T₂ = 100 et V₂ = 8.5V. The Figure 2 diode's current Iz can varies between 2 mA and 50mA. We give R₁ = 600 and R = 2040. 1. What is a Zener diode used for? Give the expression of Iz as a function of E, U = U₂, R and Rp. Between which values the voltage U then varies? 2. We suppose that E can vary by 10%, which must be the corresponding value of Rp. Rp IR Iz R U
Ig Exercise 2: We consider the circuit of figure 2. The nominal value of E is equal to 20V. This voltage is reduced to the E value U using the resistor R, and a Zener diode with characteristics T₂ = 100 et V₂ = 8.5V. The Figure 2 diode's current Iz can varies between 2 mA and 50mA. We give R₁ = 600 and R = 2040. 1. What is a Zener diode used for? Give the expression of Iz as a function of E, U = U₂, R and Rp. Between which values the voltage U then varies? 2. We suppose that E can vary by 10%, which must be the corresponding value of Rp. Rp IR Iz R U
Chapter59: Motor Startup And Troubleshooting Basics
Section: Chapter Questions
Problem 12SQ: How is a solid-state diode tested? Explain.
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