50w at to 9 • A Power transistor for which TJmax = 180°c Can dissipa a case temperature of so°c. If it is connected heat sink using an insulating washer for which the thermal resistance is 0.6 °C/W, what heat sink temp. necessary to ensure safe operation at 30w ? For an ambient temp. at 39°c, what meat sink thermal resistance is required? If a praticular aluminum finned heat sink, thermal resistance in still air is 4.5°C /w Per centimeter of length, how long a heat Sink is needed? Ans: Ts = 84°C , OSA = 1.5°C/W; heat sink length is 3 Cm

50w at to 9 • A Power transistor for which TJmax = 180°c Can dissipa a case temperature of so°c. If it is connected heat sink using an insulating washer for which the thermal resistance is 0.6 °C/W, what heat sink temp. necessary to ensure safe operation at 30w ? For an ambient temp. at 39°c, what meat sink thermal resistance is required? If a praticular aluminum finned heat sink, thermal resistance in still air is 4.5°C /w Per centimeter of length, how long a heat Sink is needed? Ans: Ts = 84°C , OSA = 1.5°C/W; heat sink length is 3 Cm

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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