Harmonic Oscillators, Circuit
In electronics a harmonic oscillator is an electronic circuit that generates a sinusoidal signal. This signal can either be a voltage, a current, or both. Harmonic oscillators are not restricted to electronics. They can be found in many other disciplines. However, they always can be described by similar mathematical equations. A very familiar harmonic oscillator is the harmonic pendulum, which is found in many high school physics textbooks. It is a mechanical system consisting of a mass suspended by a fixed length thread. Figure 1 illustrates this. When mass m is slightly separated from its equilibrium point (so that angle θ in Fig. 1 is sufficiently small) and set free, the earth’s gravitational force will make it move toward its resting point.
Contents :
1. IDEAL RESONATOR MATHEMATICAL MODEL
2. REAL RESONATOR MATHEMATICAL MODEL
3. AMPLITUDE CONTROL BY LIMITATION
4. AMPLITUDE CONTROL BY AUTOMATIC GAIN CONTROL
5. VOLTAGE CONTROLLED HARMONIC OSCILLATORS
6. FREQUENCY CONTROL LOOP
7. FURTHER CONSIDERATIONS
