of . For an emitter – base voltage V EB = mV, calculate the emitter – collector voltage V EC (in volts). [Ans: V] 60kΩ 3V 500Ω . Determine the current flowing through 3Ω and Ω resistors of the circuit given below. Assume that diodes D and D are ideal diodes.
[Ans: and 2A] 2Ω D D 3Ω 6Ω 12V 4Ω R D D R R Ω Ω Ω V . Four silicon diodes and a Ω resistor are connected as shown in figure below. Each diode has a resistance of 1Ω. Find the current flows through the 10Ω resistor. [Ans: .
A] D D D D Ω V C D E F + – . Assuming V CEsat = . V and β = , find the minimum base current ( I B ) required to drive the transistor given in the figure to saturation. [Ans: µA] I B I C 1kΩ 3V - - - - - - - - Unit electronics and Communication .
Write down Boolean equation for the output Y of the given circuit and give its truth table. [Ans: Y = ( AB )+( A+B )] Y . Prove the following Boolean expressions using the laws and theorems of Boolean algebra. i) ( A+B ) ( A + B ) = A ii) A ( A+B ) = AB iii) ( A + B ) ( A + C ) = A+BC .
Verify the given Boolean equation A + AB = A + B using truth table. . In the given figure of a voltage regulator, a Zener diode of breakdown voltage 15V is employed. Determine the current through the load resistance, the total current and the current through the diode.
Use diode approximation. [Ans: 5mA; mA; mA] V R S = 500Ω R L = 3kΩ I L I Z V Z - - - - - -