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Q. What is the basic principle of oscillators?
In an oscillating circuit, the amplitude of voltage or current oscillations decays with time owing to the dissipation of energy in the resistance contained in the circuit. If a negative resistance is incorporated in the circuit to generated energy that compensates for the loss of energy through the passive resistance, oscillations with undiminished amplitude can occur. Basically, therefore, a negative resistance must be provided in an oscillator. This is accomplished in a feedback oscillator by providing an external positive feedback to make the overall gain infinite. In a negative resistance oscillator, the desired negative resistance is supplied by internal positive feedback.
No external signal is applied to an oscillator. When the power supply to the system is switched on, a noise voltage is produced. The frequency spectrum of noise being very wide, it always has a voltage component at the frequency required for the oscillator. Thus the initial signal to trigger the oscillations is obtained from the noise voltage. The ac power of the output signal is supplied by the dc supply source.
How to design an Oscillator Circuit (500 MHz range) with no Op amps?
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Explain the AND GATES - Microprocessor? The AND GATE has a logic 1 or high output if the entire inputs are high. The boolean and symbol expression for a 3-input AND gate is sho
solar
1.....If viewing this through the Assignment tool, click the title above to go to the Submissions area. Introduction The purpose of this experiment is to examine the opera
Q. A dc series motor, with a design constant K a = 40 and flux per pole of 46.15 mWb, operates at 200 V while taking a current of 325 A. The total series-field and armature-circui
Q. In a CD amplifier,given Rs =4k?, µ=50 and rd= 35k μ. Find the voltage gain Av. The voltage gain, A v = Vo / V i = µR s / (µ+1) R s + rd = 50*4* (103 )/ (50+1)*4*103
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For the 3 bus system shown below all values are given in pu on a 100MVA base (a) Use Matlab functions lfgauss and lfnewton to find power flow solution for the system, accurate
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