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Electric Circuits
The major difference between the bridge rectifier and centre tap rectifier is that the bridge requires 4 diodes while the full wave centre tapped rectifier requires a centre tapped ________
a.Repeater
b.Transistor
c.Transformer
d.Amplifier
a.Repeater
b.Transistor
c.Transformer
d.Amplifier
Electric Circuits
a) Design a circuit using op-amp to give +12V at output when input signal is less than –4V
and –12V when it is more than –4V
and –12V when it is more than –4V
Electric Circuits
a) Calculate the minimum slew rate of the op-amp used for obtaining 2 MHz frequency,
10 V amplitude triangular wave signal at the output.
10 V amplitude triangular wave signal at the output.
Electric Circuits
a) With the help of a circuit diagram explain, how regenerative feedback is provided in
Hartley oscillator.
b) Design and draw a zener voltage regulator to provide 10V output if load resistance varies
between 50 and 200. Assume that the input unregulated dc voltage is 15V and
minimum zener operating current is 10 mA. Calculate the wattage of the Zener diode,
value and wattage of RS
.
Hartley oscillator.
b) Design and draw a zener voltage regulator to provide 10V output if load resistance varies
between 50 and 200. Assume that the input unregulated dc voltage is 15V and
minimum zener operating current is 10 mA. Calculate the wattage of the Zener diode,
value and wattage of RS
.
Electric Circuits
a) With the help of an appropriate bias (iC
Vs vCE) plot explain, why class A bias is used for
amplifiers while class C bias is used only for oscillators.
b) With the help of a circuit diagram explain how push-pull amplifier provides distortion free
performance inspite of using class B biasing.
Vs vCE) plot explain, why class A bias is used for
amplifiers while class C bias is used only for oscillators.
b) With the help of a circuit diagram explain how push-pull amplifier provides distortion free
performance inspite of using class B biasing.
Electric Circuits
explain ALT and CHOP mode of dual trace oscilloscope
Electric Circuits
There is a triangle ABC with each of it's side having a capacitor of capacitance 1F. Now, another triangle DEF is concentrically placed over triangle ABC and has capacitors of capacitance 1F on each of it's side. Points A and D, B and E, C and F are connected with 1F capacitors between them. Find the equivalent capacitance between the points A and D. Please explain how.
Electric Circuits
A 12 cm wire is given a shape of a right angled triangle ABC having sides 3 cm,4 cm,5 cm. The resistance between the two ends (AB,BC,CA) of the respective sides are mesured one by one by a multi meter. What is rhe the ratio of resistance
Electric Circuits
n identical cells, each of emf e and internal resistance r, are joined in series to form a closed circuit. One cell A is joined with reversed polarity. The potential difference across each cell except A is? The potential difference across A is?
Electric Circuits
Two particles with the same charge will repel or drive away from each other
