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Explain working of Phase Shift Oscillator?
Figure shows a phase shift oscillator. Here the combination of ReCe provides self bias for the amplifier. The phase of the signal at the input(for the time being, we assume the presence of the signal at the input)gets reversed when it is amplified by the amplifier. The output of the amplifier goes to a feedback network. The feedback network consists of three identical Rc sections. Each RC section provides a phase shift of 1800 1 thus a total of 60×3 =1800 phase shift is provided by the feedback network. The amplifier provides 1800 phase shift. Total phase shift is 3600
. the output of the feedback network is now in same phase as the originally assumed input to the amplifier. If the condition A? = 1 is satisfied, oscillations will be maintained. From this, the frequency of oscillation is given by
The range of frequency is from several hertz to several hundred hertz. It is used for producing audio frequency range. If we change any value of capacitor or any value of resistor we can change the frequency. The value of 3 capacitor change simultaneously then a large change is developed is frequency.
Level 1 is means of sending bit streams over a physical path. It uses times lot 16 of a 2 M bit/s PCM system or times slot 24 of a1.5 M bit/s system. Level 2 performs functions
DI Disable Interrupts Instruction The interrupt enable flip flop is reset and all the interrupts of 8085 microprocessors except TRAP are disabled . the instruction form
Q. Explain biased and double clipper circuits. Clipper can be either forward biased or reverse biased. If a battery is connected in series with the diode in a positi
Q. Illustrate about Transfer Functions? The transfer function is a means by which the dynamic characteristics of devices or systems are described. The transfer function is a ma
Flicker noise: I’d like to plot the graph of the flicker noise found in the data sheet for the amplifier (will be provided later) and also generate the equation for that graph sho
Draw the state diagram for the state machine described by Table 7.5 in the text. Note, the table shows the transition to the next state S* from the current state S for the next set
The resistance of an electrical conductor depends on 4 factors, these being: a) The length of the conductor b) The cross-sectional area of the conductor
Q. Give the Shockley's equation for the transfer characteristics of JFET's? Where ID is the drain current and VGS is the voltage across gate and source. The squared term o
For the network shown in Figure, find the current in each resistor by means of nodal analysis.
explain recombination in semiconducters
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