Electric Circuits Answers

Design a zener regulated power supply to give 9.1V DC output with maximum load current of 50 mA. Assume that the minimum IZ required for proper functioning of zener diode is 5 mA, and the unregulated DC input is 12V. Indicate the value of RS and power ratings of zener diode and RS

Draw a half adder circuit using only NAND gates.

Design and draw the circuit using op-amp to provide the output voltage obeying following relation of input voltages:
V0=-10v1-0.3(dv2/dt)-2v3

Which parameters of an op-amp become significant for a fast varying ultra low input voltage signal? What should be the values of these parameters for a triangular wave signal of ±5 mV peak to peak with 50 MHz frequency given to a unity gain op-amp amplifier?

a) Design and draw a voltage comparator circuit using op-amp IC 741 to give +VSat at the output if the input voltage is less than -3V and -VSat for input more than -3V.
b) Design and draw the circuit of a voltage regulator using LM 317 to provide an adjustable voltage between 6 to 12V.

Divide 11618 by 318. Express the obtained result in decimal number

Design and draw the circuit of a voltage regulator using LM 317 to provide an
adjustable voltage between 6 to 12V.

Is rectification efficiency is proportional to the no. of diodes used in a rectifier circuit ?

An electrical circuit has the following three components connected in parallel to a 50 Hz AC supply:
120 Ω resistor ,100 μF capacitor ,A coil of resistance 25 Ω and inductance 0.5 H
Here is information about the phasor diagrams:
- Capacitive reactance (Xc)leads resistance by 90°
- Inductive reactance (XL) lags resistance by 90°
Xc = 1/2πFc (Ω) , XL = 2πFL (Ω)
 Sketch the circuit.