By Raj Senani, D. R. Bhaskar, V. K. Singh, R. K. Sharma
This booklet serves as a single-source connection with sinusoidal oscillators and waveform turbines, utilizing classical in addition to a number of glossy digital circuit construction blocks. It offers a cutting-edge assessment of a giant number of sinusoidal oscillators and waveform turbines and features a catalogue of over six hundred configurations of oscillators and waveform turbines, describing their correct layout info and salient functionality features/limitations.
The authors speak about a few attention-grabbing, open study difficulties and contain a accomplished number of over 1500 references on oscillators and non-sinusoidal waveform generators/relaxation oscillators.
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Extra info for Sinusoidal Oscillators and Waveform Generators using Modern Electronic Circuit Building Blocks
Example text
From the classical theory of feedback oscillators, the sinusoidal oscillator, which is usually made from an amplifier and a frequencyselective RC circuit or LC circuit arranged in a positive feedback, can be analyzed by using Barkhausen criterion. A typical block diagram model of an oscillator shown in Fig. 1 contains an amplifier of gain A and a frequency-selective feedback network having gain β. According to Barkhausen criterion, in order that such a system can generate sinusoidal oscillations, the necessary conditions are jAβj ¼ 1 and ∠Aβ ¼ 0 or an integral multiple of 360 .
Out of these 12 oscillators, 6 circuits are already derived in [38] which have been shown in Fig. 7; the remaining six oscillator configurations are shown here in Fig. 8. An important point to be noticed is that whereas the Wien bridge and some other oscillators require gain of 3 to maintain sustained oscillations, several others require only half of this gain. Consequently, their maximum frequency range of operation will be nearly twice that of the Wien bridge oscillator for a given gain-bandwidth product of the op-amp employed.
7d, e, and f, it is given by ðR4 À 2R3 Þ 0 for R1 ¼ R2 ¼ R and C1 ¼ C2 ¼ C ð1:23Þ Subsequently, Boutin [44] carried out a systematic derivation of all possible canonic single-op-amp four resistors-two capacitors oscillators and came to the conclusion that only twelve such circuits are possible. Out of these 12 oscillators, 6 circuits are already derived in [38] which have been shown in Fig. 7; the remaining six oscillator configurations are shown here in Fig. 8. An important point to be noticed is that whereas the Wien bridge and some other oscillators require gain of 3 to maintain sustained oscillations, several others require only half of this gain.