The current of an LED lamp employing series connected LEDS is regulated with the feedback circuit shown in the figure. What is the maximum number of 2V-LEDS that can be connected in series in the LED lamp? The Mosfet operates in saturation. Circuit parameters / Devre Parametreleri VREF=1,6 V, Rs=100 0, W/L=55/0.18, VDD = 33 V, H,Cox = 200 µA/V2, VTH = 0.4 V, A = 0, A = co. VDD series-connected LEDS A1 VREF HEM1 Rs O a. 11 О Ь. 20 O c. 15 O d. 18 O e. 13 O f. 10 O g. 17 O h. 12

The current of an LED lamp employing series connected LEDS is regulated with the feedback circuit shown in the figure. What is the maximum number of 2V-LEDS that can be connected in series in the LED lamp? The Mosfet operates in saturation. Circuit parameters / Devre Parametreleri VREF=1,6 V, Rs=100 0, W/L=55/0.18, VDD = 33 V, H,Cox = 200 µA/V2, VTH = 0.4 V, A = 0, A = co. VDD series-connected LEDS A1 VREF HEM1 Rs O a. 11 О Ь. 20 O c. 15 O d. 18 O e. 13 O f. 10 O g. 17 O h. 12

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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The ac equivalent circuit for an amplifier is shown. Assume the capacitors have infinite value, RI =750Ω, RB =100 kΩ, RC =100 kΩ, and R3 =100 kΩ. Calculate the input resistance and output resistance for the amplifier if the BJT Q-point is (75 μA, 10 V). Assume βo =100 and VA =75 V.
The ac equivalent circuit for an amplifier is shown. Assume the capacitors have infinite value, RI = 100 kΩ, RG = 10 MΩ, RD = 560 kΩ, and R3 = 1.5 MΩ. Calculate the voltage gain for the amplifier if the MOSFETQ-point is (10 μA, 5 V). Assume Kn = 100 μA/V2 and λ = 0.02 V−1.
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