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Cointruct and simulate using multisim software a series voltage regulator to supply 1A to a load at a constant voltage of 9V. The supply voltage to regulator is 15V±10%. The minimum zener current is 12mA. For the transistor to be used, suppose VBE=0.6V and β=50 Explain also Thevinin and Norton Equivalent circuit at the load terminals
Q. A current i(t) = 20 cos(2π × 60)t A flows through a wire. Find the charge flowing, and the number of electrons per second that are passing some point in the wire.
What is basic requirement of semiconductor laser? Draw its label diagram and explain its working with necessary theory. Write down the applications of semiconductor laser.
Faraday conducted a series of experiments on coils in a magnetic field. He found that if the magnetic flux density threading a coil were changed, a voltage was induced in the co
Q. How is the electron beam focused to a fine spot on the face of the CRT? Sol. The functional diagram of an electrostatic focusing arrangement is shown below. The pre-accele
Architecture of 8085 Microprocessor The 8085 microprocessor is an 8 bit general purpose microprocessor. 8 bit processor means it can read write and process 8 bit data
OBJECTIVES Use an NXT to control the speed of a DC fan motor. You will us a potentiometer to set the speed and the second fan motor as feedback. Use the circuit from Lab 1 to
Q. In an amplifier, the maximum voltage gain is 1500 and occurs at 1kHz. It falls to 1060.5 at 20kHz and at 20Hz. Determine (i) lower cut-off frequency (ii) upper cut-o
Charge Carriers in Semiconductors In a metal, the atoms are imbedded in a "sea" of free electrons, and these electrons can move as a group under the influence of an
Q. How can a JFET be used as a constant current source? Explain from the drain characteristics. As the VDS voltage is increased from 0 to a few volts, the current will increase
Q. The K map of a logic function is shown in Figure. (a) Obtain a POS expression and its corresponding realization. (b) For the purpose of comparison, obtain the correspondin
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