H.W 1. a. Determine the thermal voltage for a diode at a temperature of 20°C. b. For the same diode of part (a), find the diode current using Eq. 2.1 and the applied bias voltage if I, 40 nA, n = 2 (low value of = is 0.5 V. 2. Determine the static or de resistance of the commercially available diode of Fig. 1 at a forward current of 4 mA. 3. a. Determine the dynamic (ac) resistance of the commercially available diode of Fig. 2.1 at a forward current of 10 mA using Eq. (1.5). b. Determine the dynamic (ac) resistance of the diode of Fig. 2.1 at a forward current of 10 mA using Eq. (2.5). c. Compare solutions of parts (a) and (b). 4. Determine the average ac resistance for the diode of Fig. 2.1 for the region between 0.6 V and 0.9 V. 5. Determine the temperature coefficient of a 5-V Zener diode (rated 25°C value) if the nominal voltage drops to 4.8 V at a temperature of 100°C. -40 -30 -20 ➖➖➖➖➖➖➖➖ Reverse-bias region, (VD<0 V. ID=-1₁) -10 ID=1eV/Vr AID (mA) 20- 19- 18- 17- 16 15- 14 13- 12- 11- 10- -9 8- -7- 6 5- 2 Eq. (1.1) 10 PA 20 PA 30 PA 40 PA 50 PA 0.3 (VD positive) H 0.5 0.7 Actual commercially available unit No-bias (Vp=0V.Ip=0 mA) Defined polarity and direction for graph VD + -ID Forward-bias region (VD>0V. Ip>0 mA) Fig. 2.1 Silicon semiconductor diode characteristics. VD (V)
H.W 1. a. Determine the thermal voltage for a diode at a temperature of 20°C. b. For the same diode of part (a), find the diode current using Eq. 2.1 and the applied bias voltage if I, 40 nA, n = 2 (low value of = is 0.5 V. 2. Determine the static or de resistance of the commercially available diode of Fig. 1 at a forward current of 4 mA. 3. a. Determine the dynamic (ac) resistance of the commercially available diode of Fig. 2.1 at a forward current of 10 mA using Eq. (1.5). b. Determine the dynamic (ac) resistance of the diode of Fig. 2.1 at a forward current of 10 mA using Eq. (2.5). c. Compare solutions of parts (a) and (b). 4. Determine the average ac resistance for the diode of Fig. 2.1 for the region between 0.6 V and 0.9 V. 5. Determine the temperature coefficient of a 5-V Zener diode (rated 25°C value) if the nominal voltage drops to 4.8 V at a temperature of 100°C. -40 -30 -20 ➖➖➖➖➖➖➖➖ Reverse-bias region, (VD<0 V. ID=-1₁) -10 ID=1eV/Vr AID (mA) 20- 19- 18- 17- 16 15- 14 13- 12- 11- 10- -9 8- -7- 6 5- 2 Eq. (1.1) 10 PA 20 PA 30 PA 40 PA 50 PA 0.3 (VD positive) H 0.5 0.7 Actual commercially available unit No-bias (Vp=0V.Ip=0 mA) Defined polarity and direction for graph VD + -ID Forward-bias region (VD>0V. Ip>0 mA) Fig. 2.1 Silicon semiconductor diode characteristics. VD (V)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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