Assignments

Assignment - 5

What is collector emitter voltage?

2. Change the power supply to 15V and calucalte VCE.

3. Calculate the Q Point.

4. Find resistor values to get Vcc=10V, Vce= 5V, Ic=10 mA and current gain =100

Assignment - 4

Draw the loadline of the following circuit. If supply voltage is increased to 25 V, what will happen to load line?

2. What is voltage between collector and ground, if current gain is 200?

3. Determine if the following circuit is in saturation?

4. Determine if following parameters are changed in circuit of Q.3, will the transistor be in saturation ?

Case 1: RB=51 K ohm and current gain=100

Case 2: VBB= 10 V and current gain = 500

Case 3: Rc= 10 K ohm and current gain = 100

Case 4: Vcc=10 V and current gain =100

5 If 680 Kohm resistor is replaced by 4.7 K ohms and a series, what are the saturation current and voltage required to bring this transistor in saturation?

Assignment - 3

A transistor has a collector current of 2 mA. If the current gain is 135, what is the base current?
A transistor has a current gain of 150 and a base current of 30 A. What is the collector current?

3. Use the second approximation to calculate the base current in Fig. What is the voltage across the base resistor? The collector current if current gain is 200?

4. The transistor of Fig. has current gain 300. Calculate IB, IC, VCE, and PD.

5. Suppose you measure a VBE of 1 V. What is the collector-emitter voltage in Fig.

Assignment - 2

If a transformer has a turns ratio of 6;1, what is the rms secondary voltage? The peak secondary voltage? Assume a primary voltage of 120 Vrms.
A center-tapped transformer with 120 V input has a turns ratio of 4;1. What is the rms voltage across the upper half of the secondary winding? The peak voltage? What is the rms voltage across the lower half of the secondary winding?
Consider figure, sketch the output waveform. What is the maximum positive voltage? The maximum negative?

3. Consider figure, sketch the output waveform. What is the maximum positive voltage? The maximum negative?

4. Consider figure, sketch the output waveform. What is the maximum positive voltage? The maximum negative?

5. If the line voltage in Fig.varies from 105 to 125 Vrms, what is the minimum dc output voltage? The maximum?

Assignment - 1

1) A diode has a power rating of 5 W. If the diode voltage is 1.2 V and the diode current is 1.75 A, what is the power dissipation? Will the diode be destroyed?

2) Calculate the load voltage and load current for given figure

3) Calculate the load voltage and load current for given figure

4) Use the second approximation to calculate the load voltage, load current, and diode power in Fig.

5) The 1N4001 of Fig. has a bulk resistance of 0.23 V. What is the load voltage, load current, and diode power?

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