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Forward Blas Condition: (injected minority current - due to holes crossing the junction and entering P. side of the diode). Assuming current flowing through the dicde to be very large, the diode can be approximated as short- circuited switch. Table 1.3 Forward Voltage Aoross the Diade, Voite) Forward Current through the Diode IimA) Voltage Goure Reverse blan operation ValVoits) I negative terminal of the input supply is connected to anode (p-side) and -e terminal of the input supply is connected to cathode (n-side) then the diode is said to be reverse biased. In this condition an amount equal to reverse biasing voltage increases the height of the potential barrier at the junction. Bath the holes on P. side and electrons on Nside tend to move away from the junction there by increasing the depleted region. Her the process cannot continue indefinitely, hus a small current called reverse saturation current continues to flow in the diode. This aurrent is negligible; the diode can be approximated as an open circuted switch. 0.1 0.1 0.000194 0.2 0. 199 0.001471 0.3 0.291 0.00882 0.4 0.364 0.036 0.5 0.411 0.089 0.6 0.440 0.160 0.7 0.461 0.239 0.5 0.5 2 0.555 1.445 0.623 5.377 12 0.661 11 PROCEDURE: Forward Blas Condition: 15 0.674 14 20 0.689 19 1. Connect the circuit as shown in figure 1.2 using PN Junction diode. Circult Diagram: Reverse Blas Condition: 1. Connect the circuit as shown in figure 1.3 using PN Junction diode. 2. Vary V, in the Regulated Power Supply (RPS) gradually in steps of 1V from OV to 12V and note down the corresponding readings Veand , in Table 14. Fig. 1.2 Forward Bias Condition 3. Tabulate different reverse currents obtained for different reverse voltages. 2. Initially vary Regưated Power Supply (RPS) voltage V. in steps of 0.1 V. Once the current starts increasing vary V, from 1V to 12V and note down the corresponding readings Vaand l in Table 1.3. 3. Tabulate different forward currents obtained for different forward voltages.

Forward Blas Condition: (injected minority current - due to holes crossing the junction and entering P. side of the diode). Assuming current flowing through the dicde to be very large, the diode can be approximated as short- circuited switch. Table 1.3 Forward Voltage Aoross the Diade, Voite) Forward Current through the Diode IimA) Voltage Goure Reverse blan operation ValVoits) I negative terminal of the input supply is connected to anode (p-side) and -e terminal of the input supply is connected to cathode (n-side) then the diode is said to be reverse biased. In this condition an amount equal to reverse biasing voltage increases the height of the potential barrier at the junction. Bath the holes on P. side and electrons on Nside tend to move away from the junction there by increasing the depleted region. Her the process cannot continue indefinitely, hus a small current called reverse saturation current continues to flow in the diode. This aurrent is negligible; the diode can be approximated as an open circuted switch. 0.1 0.1 0.000194 0.2 0. 199 0.001471 0.3 0.291 0.00882 0.4 0.364 0.036 0.5 0.411 0.089 0.6 0.440 0.160 0.7 0.461 0.239 0.5 0.5 2 0.555 1.445 0.623 5.377 12 0.661 11 PROCEDURE: Forward Blas Condition: 15 0.674 14 20 0.689 19 1. Connect the circuit as shown in figure 1.2 using PN Junction diode. Circult Diagram: Reverse Blas Condition: 1. Connect the circuit as shown in figure 1.3 using PN Junction diode. 2. Vary V, in the Regulated Power Supply (RPS) gradually in steps of 1V from OV to 12V and note down the corresponding readings Veand , in Table 14. Fig. 1.2 Forward Bias Condition 3. Tabulate different reverse currents obtained for different reverse voltages. 2. Initially vary Regưated Power Supply (RPS) voltage V. in steps of 0.1 V. Once the current starts increasing vary V, from 1V to 12V and note down the corresponding readings Vaand l in Table 1.3. 3. Tabulate different forward currents obtained for different forward voltages.

Electric Motor Control
Electric Motor Control
10th Edition
ISBN:9781133702818
Author:Herman
Publisher:Herman
Chapter59: Motor Startup And Troubleshooting Basics
Section: Chapter Questions
Problem 12SQ: How is a solid-state diode tested? Explain.
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When in forward biased, what have you noticed when you change the source voltage from 0V to +20V? When in reverse biased, what have you noticed when changing the source voltage from 0 V to -15V? 

ECECTRONICS I EE zul (injected minority current - due to holes crossing the junction and entering P- side af the diede). Assuming current flowing through the dicde to be very large, the dicde can be approximated as short- circuited switch. Forward Blas Condition: Table 1.3 Forward Voltage Aoross the Forward Current through the Diode, HimA) Voltage Cource Dlode, V(Voite) Reverse blas operation If negative terminal of the input supply is connected to anode (p-side) and -ye, terminal of the input supply is connected to cathode (n-side) then the diode is said to be reverse biased. In this condition an amount equal to reverse biasing voltage increases the height of the potential barrier at the junction. Bath the holes on P- side and electrons on N-side tend to move away from the junction there by increasing the depleted region. HaIMever the process cannot continue indefinitely, thus a small current called reverse saturation current continues to flow VA (Voltc) 0.1 0.1 0.000194 0.2 0.199 0.001471 0.3 0.291 0.00882 0.4 0.364 0.036 0.5 0.411 0.089 0.6 0.440 0.160 0.7 0.461 0.239 in the diode. This current is negligible; the diode can be appraximated as an apen circuited switch. 1 0.5 0.5 2 0.555 1.445 0.623 5.377 12 0.661 11 PROCEDURE: 15 0.674 14 Forward Blas Condition: 20 0.689 19 1. Connect the circuit as shown in figure 1.2 using PN Junction diode. Circult Dlagram: Reverse Blas Condition: 1. Connect the circuit as shown in figure 1.3 using PN Junction diode. 2. Vary V, in the Regulated Pawer Supply (RPS) gradually in steps of 1V from OV to 12V and note dawn the corresponding readings Veand , in Table 1.4. Fig. 1.2 Forward Bias Condition 3. Tabulate different reverse currents obtained for different reverse voltages. 2. Initially vary Regulated Power Supply (RPS) voltage V, in steps of 0.1 V. Once the current starts increasing vary Va from 1V to 12V and note down the corresponding readings ye and I in Table 1.3. IN 3. Tabulate different forward currents obtained for different forward valtages. DC Fig. 1.3 Reverse Bias Condition
Transcribed Image Text:ECECTRONICS I EE zul (injected minority current - due to holes crossing the junction and entering P- side af the diede). Assuming current flowing through the dicde to be very large, the dicde can be approximated as short- circuited switch. Forward Blas Condition: Table 1.3 Forward Voltage Aoross the Forward Current through the Diode, HimA) Voltage Cource Dlode, V(Voite) Reverse blas operation If negative terminal of the input supply is connected to anode (p-side) and -ye, terminal of the input supply is connected to cathode (n-side) then the diode is said to be reverse biased. In this condition an amount equal to reverse biasing voltage increases the height of the potential barrier at the junction. Bath the holes on P- side and electrons on N-side tend to move away from the junction there by increasing the depleted region. HaIMever the process cannot continue indefinitely, thus a small current called reverse saturation current continues to flow VA (Voltc) 0.1 0.1 0.000194 0.2 0.199 0.001471 0.3 0.291 0.00882 0.4 0.364 0.036 0.5 0.411 0.089 0.6 0.440 0.160 0.7 0.461 0.239 in the diode. This current is negligible; the diode can be appraximated as an apen circuited switch. 1 0.5 0.5 2 0.555 1.445 0.623 5.377 12 0.661 11 PROCEDURE: 15 0.674 14 Forward Blas Condition: 20 0.689 19 1. Connect the circuit as shown in figure 1.2 using PN Junction diode. Circult Dlagram: Reverse Blas Condition: 1. Connect the circuit as shown in figure 1.3 using PN Junction diode. 2. Vary V, in the Regulated Pawer Supply (RPS) gradually in steps of 1V from OV to 12V and note dawn the corresponding readings Veand , in Table 1.4. Fig. 1.2 Forward Bias Condition 3. Tabulate different reverse currents obtained for different reverse voltages. 2. Initially vary Regulated Power Supply (RPS) voltage V, in steps of 0.1 V. Once the current starts increasing vary Va from 1V to 12V and note down the corresponding readings ye and I in Table 1.3. IN 3. Tabulate different forward currents obtained for different forward valtages. DC Fig. 1.3 Reverse Bias Condition
ECECTRONICS I EE zuC Reverae Blas Condition: Table 1.4 Progress Check Question: When in forward biased, what have you noticed when you change the source voltage from OV to +20V? (Tristan) Reverse Voltage Aoross the Reverce Current through the Votage Gouroe Dlode, Dlode, Va (Volts) V(Voltc) 1. -1 -2 -0.222 -2.999 -5.999 When in reverse biased, what have you noticed when changing the source voltage from 0 V to -15V? (Tristan) 12 -11.998 15 -14.998 Graph:
Transcribed Image Text:ECECTRONICS I EE zuC Reverae Blas Condition: Table 1.4 Progress Check Question: When in forward biased, what have you noticed when you change the source voltage from OV to +20V? (Tristan) Reverse Voltage Aoross the Reverce Current through the Votage Gouroe Dlode, Dlode, Va (Volts) V(Voltc) 1. -1 -2 -0.222 -2.999 -5.999 When in reverse biased, what have you noticed when changing the source voltage from 0 V to -15V? (Tristan) 12 -11.998 15 -14.998 Graph:
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