A thermistor in the circuit shown in Figure 7 is placed on a roof top where...
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A thermistor in the circuit shown in Figure 7 is placed on a roof top where the temperature of the roof is changing due to the environmental heat. The thermistor has the following specification, RT=5k at reference temperature of 25°C; temperature coefficient of resistance = -1kQ/°C. V1 Thermistor RT www R2 5ΚΩ R3 •3ΚΩ www R4 3kQ2 VCC Vref ⁹V Figure 7 LED1 R5 ww 1kQ2 2N2222 มม Q1 R5 100Ω ALED2 Q2 2N2222 R6 >100Ω A thermistor in the circuit shown in Figure 7 is placed on a roof top where the temperature of the roof is changing due to the environmental heat. The thermistor has the following specification, RT=5k at reference temperature of 25°C; temperature coefficient of resistance = -1kQ/°C. V1 Thermistor RT www R2 5ΚΩ R3 •3ΚΩ www R4 3kQ2 VCC Vref ⁹V Figure 7 LED1 R5 ww 1kQ2 2N2222 มม Q1 R5 100Ω ALED2 Q2 2N2222 R6 >100Ω
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Solution Step1 Step2 Step 3 Vout Calculate the reference Voltage Vref Riower R total Vref gv x 3KJ ... View the full answer
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