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Q. Explain working of Resistance-capacitance coupled Amplifiers?
Resistance-capacitance (RC)-coupled Amplifiers : The following figure illustrates the most widely used method for coupling between audio stages. The bias for each stage is furnished by cathode voltage. The coupling capacitor, Cc, provides an ac path from the plate of the first stage to the grid of the following stage but blocks any dc voltage. The load resistor, RL, has a large value so that a large voltage change can be coupled to the grid of the next stage. When a signal is applied to the first stage, voltage variations occur across RL. These voltage variations are then coupled through the RC circuits, Cc and Rg, to the grid of the second tube. The coupling capacitor, therefore, performs the double function of providing a low-impedance ac path and of blocking dc plate voltage from the grid of the second tube.
Q. Show Steady-State Sinusoidal Analysis with PSpice PSpice can easily solve steady-state ac circuits for currents and voltages. Ac voltage sources, which must begin with the l
Addition of binary numbers Example: Add 110010102 ( -510). and 00000101 2 (+5 10 ) Solution : Binary signed
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Shunt Capacitors Line losses owing to poor PF can be decreased through improving the PF. Overall improvement in the operating condition can be brought about through reducing t
Q. A four-pole dc generator is lap wound with 326 armature conductors. It runs at 650 r/min on full load, with an induced voltage of 252 V. If the bore of themachine is 42 cmin dia
Why is the signal first attenuated and then amplified?
Partial derivatives - Transistor hybrid model: The partial derivatives are taken by keeping the collector voltage or base current constant as pointed out by the subscript atta
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