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1) Consider the circuit at right, consisting of two R LEDS (one red, one green), which you can model as “practical diodes" with VD= 2.0V (LEDS typically have larger Vp's than ordinary Si or Ge diodes). red green в a) If terminals A and B were connected to a DC source with voltage Vo, what would happen? (Consider applying in both polarities, i.e. +Vo and –Vo, and when VoVp...) b) If the terminals A and B were connected to an AC source with peak voltage V0, what would happen? (Consider both very low frequency: f<~1 Hz – and high-frequency cases.) c) If R = 1 k2, and both diodes have a maximum continuous power dissipation of 0.1 W and a peak inverse voltage Vpiv = 20V, what is the maximum DC voltage VDCmax Which can be safely applied between A and B?

1) Consider the circuit at right, consisting of two R LEDS (one red, one green), which you can model as “practical diodes" with VD= 2.0V (LEDS typically have larger Vp's than ordinary Si or Ge diodes). red green в a) If terminals A and B were connected to a DC source with voltage Vo, what would happen? (Consider applying in both polarities, i.e. +Vo and –Vo, and when VoVp...) b) If the terminals A and B were connected to an AC source with peak voltage V0, what would happen? (Consider both very low frequency: f<~1 Hz – and high-frequency cases.) c) If R = 1 k2, and both diodes have a maximum continuous power dissipation of 0.1 W and a peak inverse voltage Vpiv = 20V, what is the maximum DC voltage VDCmax Which can be safely applied between A and B?

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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1) Consider the circuit at right, consisting of two LEDs (one red, one green), which you can model as "practical diodes" with \(V_D = 2.0V\) (LEDs typically have larger \(V_D\)'s than ordinary Si or Ge diodes). **Diagram Explanation:** - The circuit diagram shows a resistor \(R\) connected in series with two LEDs, one red and one green. - The red and green LEDs are oriented in opposite directions between terminals A and B. **Questions:** a) If terminals A and B were connected to a DC source with voltage \(V_0\), what would happen? (Consider applying in both polarities, i.e. \(+V_0\) and \(-V_0\), and when \(V_0 < V_D\) and \(V_0 > V_D\)...) b) If the terminals A and B were connected to an AC source with peak voltage \(V_0\), what would happen? (Consider both very low frequency: \(f \approx 1 \, \text{Hz}\) — and high-frequency cases.) c) If \(R = 1 \, \text{k}\Omega\), and both diodes have a maximum continuous power dissipation of 0.1 W and a peak inverse voltage \(V_{PIV} = 20V\), what is the maximum DC voltage \(V_{DCmax}\) which can be safely applied between A and B?
Transcribed Image Text:1) Consider the circuit at right, consisting of two LEDs (one red, one green), which you can model as "practical diodes" with \(V_D = 2.0V\) (LEDs typically have larger \(V_D\)'s than ordinary Si or Ge diodes). **Diagram Explanation:** - The circuit diagram shows a resistor \(R\) connected in series with two LEDs, one red and one green. - The red and green LEDs are oriented in opposite directions between terminals A and B. **Questions:** a) If terminals A and B were connected to a DC source with voltage \(V_0\), what would happen? (Consider applying in both polarities, i.e. \(+V_0\) and \(-V_0\), and when \(V_0 < V_D\) and \(V_0 > V_D\)...) b) If the terminals A and B were connected to an AC source with peak voltage \(V_0\), what would happen? (Consider both very low frequency: \(f \approx 1 \, \text{Hz}\) — and high-frequency cases.) c) If \(R = 1 \, \text{k}\Omega\), and both diodes have a maximum continuous power dissipation of 0.1 W and a peak inverse voltage \(V_{PIV} = 20V\), what is the maximum DC voltage \(V_{DCmax}\) which can be safely applied between A and B?
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