ffd

Advantages and Disadvantages of Transformer Coupled Amplifiers Advantages: 1.        No signal power is lost in the collector or base resistors. 2.        An excellent impedance matching and can be achieved in a transformer coupled amplifier. 3.        Due to excellent impedance matching, transformer coupling provides higher gain. 4.        D.C isolation between first and second stages. Disadvantages: 1.        It has a poor frequency response. 2.        The coupling transformers are bulky and fairly expensive at audio frequencies. 3.        Frequency distribution is higher i.e. low frequency signals are less amplified as compared to the high frequency signals. 4.        Transformer coupling tends to introduce hum in the output. 5.    ...

Advantages and disadvantages of LED Advantages: 1.        Low working voltage and currents. 2.        Less power consumption. 3.        No warm up time. 4.        Very fast action. 5.        Emission of monochromatic light. 6.        Small size and less in weight. 7.        No effect of mechanical vibrations. 8.        Less fragile than glass. 9.        Extremely long life. Disadvantages: 1.        Sensitive to damage by over voltage or over current. 2.        Wide optical bandwidth compared to lasers. 3.        Temperature dependent of radiant output power and wave length. 4.        Theoretical overall ...