4.30 In the circuit shown in Fig. P4.30, D₁ is a large-area, high-current diode whose reverse leakage is high and independent of applied voltage, while D₂ is a much smaller, low-current diode. At an ambient temperature of 20°C resistor R₁ is adjusted to make VR1 = V2 = 520 mV. Subsequent measurement indicates that R₁ is 520 ks2. What do you expect the voltages VR1 and V₂ to become at 0°C and at 60°C? +10 V R₁ D, Z D₂ |11 VRI 9+ = V₂

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4.30 In the circuit shown in Fig. P4.30, D₁ is a large-area, high-current diode whose reverse leakage is high and
independent of applied voltage, while D₂ is a much smaller, low-current diode. At an ambient temperature of 20°C,
resistor R₁ is adjusted to make VR1 = V₂ = 520 mV. Subsequent measurement indicates that R₁ is 520 k2. What do you
expect the voltages VR1 and V₂ to become at 0°C and at 60°C?
Figure P4.30
+10 V
R₁
D₁ Z
D₂
VRV
+
V₁
+
V₂
Transcribed Image Text:4.30 In the circuit shown in Fig. P4.30, D₁ is a large-area, high-current diode whose reverse leakage is high and independent of applied voltage, while D₂ is a much smaller, low-current diode. At an ambient temperature of 20°C, resistor R₁ is adjusted to make VR1 = V₂ = 520 mV. Subsequent measurement indicates that R₁ is 520 k2. What do you expect the voltages VR1 and V₂ to become at 0°C and at 60°C? Figure P4.30 +10 V R₁ D₁ Z D₂ VRV + V₁ + V₂
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