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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.
Q. Explain about Zener Diodes? Most diodes are not intended to be operated in the reverse breakdown region. Diodes designed expressly to operate in the breakdown region are cal
Q. Biasing the BJT? A simple method of biasing the BJT is shown in Figure. While no general biasing procedure that will work in all cases can be outlined, a reasonable approach
Connect the 2 kHz (sin ωt) signal to input A of the "Adder" module Connect input B to ground (GND). Connect the outputof the"Adder"(GA+gB) to input A-CH1 of "Scope Selector".
The original 8086, which only had 1 MB of memory. This megabyte is dividing into low memory for IRQ tables, application memory and high memory.
Singular Value Decomposition (i) initialize a 2x2 matrix m=[4 0.5;0.5 7] Factorize the matrix with SVD [u d v]=svd(m) How the matrix u and v differ? Why is that?
For the RC phase-shift oscillator if c=1pF and R=10K determine the value of Rf
how does Proportional band affect the performance of control system?
explain basic working of voltmeter transistor
Logistical management - Gis applications: Using GIS also allows a radical improvement in daily work management practices - such as planning new installations, scheduling opera
Q. Elucidate the working of broad band ISDN? Ans: BISDN Configuration: Figuredemonstrates how access to BISDN network is accomplished. Every peripheral device is interfaced
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