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Advantages and Disadvantages of Push Pull Amplifier Advantages: 1.        Even harmonics are absent in the output. 2.        The problem of core saturation and non-linear distortions will not appear because of cancellation of D.C. components of collector current. 3.        The output is double as that offered by a single ended stage. 4.        The effect of ripple voltage of the power supply due to inadequate filtering are balanced out because of flow of ripple current in opposite direction in the primary of the output transformer. Disadvantages: 1.        Two transistors have to be used. 2.        It requires two equal and opposite voltages at the input. Therefore push pull circuit requires the use of driver stage to furnish these signals. 3.        If the parameter of the two tr...

Advantages and Disadvantages of LCD Advantages: 1.        Low power consumption 2.        Small voltage requirement 3.        They are economical 4.        Good contrast in display Disadvantages: 1.        Sometimes the output of the LCD is not visible clearly 2.        They are not very reliable 3.        Slow operation 4.        occupies large area 5.        They are very sensitive, damage by over voltage or over current 6.        They have limited temperature range 7.        In LCD a.c sequence wave drive of frequency less than 50 Hz is employed. Applications of LCD 1.        Display unit in calculators 2.    ...

Advantages and disadvantages of RC Coupled Amplifier Advantages: 1.        The frequency response is excellent. 2.        This circuit is very compact and extremely light. 3.        Cost is low because it employ resistors and capacitors which are cheap. Disadvantages: 1.    Low voltage and power gain. 2.    They have the tendency to become noisy with age. 3.    Impedance matching is poor. It is because the output impedance of RC coupled amplifier. Applications of RC Coupled Amplifier The RC coupled amplifier have excellent audio fidelity over a wide range of frequency. Therefore, they are widely used as voltage amplifiers (preamplifiers) Ex: in public address system.

Advantages and Disadvantages of Moving Coil Instruments Advantages: 1.        Uniform scale. 2.        High sensitivity 3.        Low power consumption. 4.        No hysteresis loss. 5.        Not much affected by stray magnetic fields. 6.        Very effective and efficient eddy current damping. 7.        High torque / weight ratio. 8.        Very accurate and reliable. 9.        Can be used in vertical and horizontal position due to spring control and 10.     Can be designed to cover a wide range of currents and voltages by using shunt and series resistances respectively Disadvantages: 1.        Can be used only for D.C measurements. 2.        Mo...