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Question What must be the minimum power rating for the external pass transistor used with a 7815 regulator in a circuit such as that shown in Figure below? The input voltage is 30 V and the load resistance is 10 N. The maximum internal current is to be 700 mA. Assume that there is no heat sink for this calculation. Keep in mind that the use of a heat sink increases the effective power rating of the transistor and you can use a lower rated transistor. Qext VIN O Rest VOUT 7815 C2 RL

Question What must be the minimum power rating for the external pass transistor used with a 7815 regulator in a circuit such as that shown in Figure below? The input voltage is 30 V and the load resistance is 10 N. The maximum internal current is to be 700 mA. Assume that there is no heat sink for this calculation. Keep in mind that the use of a heat sink increases the effective power rating of the transistor and you can use a lower rated transistor. Qext VIN O Rest VOUT 7815 C2 RL

Introductory Circuit Analysis (13th Edition)
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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Question What must be the minimum power rating for the external pass transistor used with a 7815 regulator in a circuit such as that shown in Figure below? The input voltage is 30 V and the load resistance is 10 N. The maximum internal current is to be 700 mA. Assume that there is no heat sink for this calculation. Keep in mind that the use of a heat sink increases the effective power rating of the transistor and you can use a lower rated transistor. Qext VIN Rext VOUT C 7815 - RL
Transcribed Image Text:Question What must be the minimum power rating for the external pass transistor used with a 7815 regulator in a circuit such as that shown in Figure below? The input voltage is 30 V and the load resistance is 10 N. The maximum internal current is to be 700 mA. Assume that there is no heat sink for this calculation. Keep in mind that the use of a heat sink increases the effective power rating of the transistor and you can use a lower rated transistor. Qext VIN Rext VOUT C 7815 - RL
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