Exercise 7 In the circuit of figure 1 below, the diode is characterized by its internal resistor rd and its threshold voltage Va. Express the output voltage Vs as a function of E. NA: ra = 50, V₁ = 0.7 V, R₁ = R₂ = 10k, R₁ = 1 k0, E = 12 V. Tis M Figure 1

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Exercise 7

Exercise 7
In the circuit of figure 1 below, the diode is characterized by its internal
resistor rd and its threshold voltage Va. Express the output voltage Vs as a
function of E. NA: ra= 50, V₁ = 0.7 V, R₁ = R₂ = 10k, R₁ = 1 kQ, E = 12 V.
M
2013
M
Exercise 8
An ideal diode supplied by a sinusoidal voltage source e(t) = 24 sin wt deliver
through a resistor R = 202 in a counter electromotive force E = 12 V (figure 2).
Figure 1
1. Calculate the values of 0(t) = wt which correspond to a change of state of
the diode.
2. Give the expression of electric current. Deduce the potential differences
across the resistor and the diode.
R
3. What is the maximum reverse voltage supported by the diode?
4. Plot on the same graph e(t), Va(t) as well as the potential difference
across the resistor.
ZYD
E
Figure 2
Exercise 9
In the circuit of figure 3, the diode is perfect and we suppose Ve(t) = Vm sin wt
with Vm > Vr.
1. Express the voltage V₂(t).
2. Draw the waveforms of V, (t) and Ve(t) on the same frame for Vm = 5V and
V₁ = 1V.
Transcribed Image Text:Exercise 7 In the circuit of figure 1 below, the diode is characterized by its internal resistor rd and its threshold voltage Va. Express the output voltage Vs as a function of E. NA: ra= 50, V₁ = 0.7 V, R₁ = R₂ = 10k, R₁ = 1 kQ, E = 12 V. M 2013 M Exercise 8 An ideal diode supplied by a sinusoidal voltage source e(t) = 24 sin wt deliver through a resistor R = 202 in a counter electromotive force E = 12 V (figure 2). Figure 1 1. Calculate the values of 0(t) = wt which correspond to a change of state of the diode. 2. Give the expression of electric current. Deduce the potential differences across the resistor and the diode. R 3. What is the maximum reverse voltage supported by the diode? 4. Plot on the same graph e(t), Va(t) as well as the potential difference across the resistor. ZYD E Figure 2 Exercise 9 In the circuit of figure 3, the diode is perfect and we suppose Ve(t) = Vm sin wt with Vm > Vr. 1. Express the voltage V₂(t). 2. Draw the waveforms of V, (t) and Ve(t) on the same frame for Vm = 5V and V₁ = 1V.
Exercise 7
In the circuit of figure 1 below, the diode is characterized by its internal
resistor rd and its threshold voltage Va. Express the output voltage Vs as a
function of E. NA: ra= 50, V₁ = 0.7 V, R₁ = R₂ = 10k, R₁ = 1 kQ, E = 12 V.
M
2013
M
Exercise 8
An ideal diode supplied by a sinusoidal voltage source e(t) = 24 sin wt deliver
through a resistor R = 202 in a counter electromotive force E = 12 V (figure 2).
Figure 1
1. Calculate the values of 0(t) = wt which correspond to a change of state of
the diode.
2. Give the expression of electric current. Deduce the potential differences
across the resistor and the diode.
R
3. What is the maximum reverse voltage supported by the diode?
4. Plot on the same graph e(t), Va(t) as well as the potential difference
across the resistor.
ZYD
E
Figure 2
Exercise 9
In the circuit of figure 3, the diode is perfect and we suppose Ve(t) = Vm sin wt
with Vm > Vr.
1. Express the voltage V₂(t).
2. Draw the waveforms of V, (t) and Ve(t) on the same frame for Vm = 5V and
V₁ = 1V.
Transcribed Image Text:Exercise 7 In the circuit of figure 1 below, the diode is characterized by its internal resistor rd and its threshold voltage Va. Express the output voltage Vs as a function of E. NA: ra= 50, V₁ = 0.7 V, R₁ = R₂ = 10k, R₁ = 1 kQ, E = 12 V. M 2013 M Exercise 8 An ideal diode supplied by a sinusoidal voltage source e(t) = 24 sin wt deliver through a resistor R = 202 in a counter electromotive force E = 12 V (figure 2). Figure 1 1. Calculate the values of 0(t) = wt which correspond to a change of state of the diode. 2. Give the expression of electric current. Deduce the potential differences across the resistor and the diode. R 3. What is the maximum reverse voltage supported by the diode? 4. Plot on the same graph e(t), Va(t) as well as the potential difference across the resistor. ZYD E Figure 2 Exercise 9 In the circuit of figure 3, the diode is perfect and we suppose Ve(t) = Vm sin wt with Vm > Vr. 1. Express the voltage V₂(t). 2. Draw the waveforms of V, (t) and Ve(t) on the same frame for Vm = 5V and V₁ = 1V.
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