Semiconductor Devices

Questions & Solutions

For the transistor circuit shown in figure, evaluate V_E , R_B, R_E , given I_c = 1 mA, V_CE = 3 V, V_BE = 0.5 V and V_CC = 12 V,  β = 100.

Q: For the transistor circuit shown in figure, evaluate VE , RB , RE , given Ic = 1 mA , VCE = 3 V, VBE = 0.5 V and VCC = 12 V,  β = 100

Numerical

Consider a box with three terminals on top of it as shown in figure.Three components namely, two germanium diodes and one resistor are connected across these three terminals in some arrangement….

Q: Consider a box with three terminals on top of it as shown in figure.

Numerical

Three components namely, two germanium diodes and one resistor are connected across these three terminals in some arrangement.
A student performs an experiment in which any two of these three terminals are connected in the circuit shown in figure.
The student obtains graphs of current-voltage characteristics for unknown combination of components between the two terminals connected in the circuit. The graphs are

(i) when A is positive and B is negative

Numerical

(ii) when A is negative and B is positive

Numerical

(iii) when B is negative and C is positive

Numerical

(iv) when B is positive and C is negative

Numerical

(v) when A is positive and C is negative

Numerical

(vi) when A is negative and C is positive

Numerical

Assuming the ideal diode draw, the output waveform for the circuit given in fig. explain the waveform.

Q: Assuming the ideal diode draw, the output waveform for the circuit given in fig. explain the waveform.

Numerical

Consider the circuit arrangement shown in figure for studying input and output characteristics of n-p-n transistor in CE configuration. Select the values of R_B and R_c for a transistor whose V_BE = 0.7 V, so that the transistor is operating at point Q as shown in the characteristics

Q: Consider the circuit arrangement shown in figure for studying input and output characteristics of n-p-n transistor in CE configuration. Select the values of RB and Rc for a transistor whose VBE = 0.7 V, so that the transistor is operating at point Q as shown in the characteristics
Numerical

Given that the input impedance of the transistor is very small and VCC = VBB = 16 V, also find the voltage gain and power gain of circuit making appropriate assumptions.