Does Sony camera have fixed focus when shooting panoramic images? The 3D function is also fixed focus, right?

Find the answers to this group of power electronic problems. Chapter II Fill in the blanks of rectifier circuit: 1. The characteristic of resistive load is _ _ _ _ _ _ _. In the single-phase half-wave controllable rectifier resistive load circuit, the maximum phase shift range of thyristor control angle α is _ _ _ _ _ _ _. 2. The characteristic of resistive load is _ _ _ _ _. In a single-phase half-wave controllable rectifier circuit with a resistive load connected in parallel with a freewheeling diode, the maximum phase shift range of the thyristor control angle α is _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ In the single-phase bridge full-control rectifier circuit, when the pure resistance is loaded, the phase shift range of α angle is _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _. When there is inductive load, the phase shift range of α angle is _ _ _ _ _ _ _ _, and the maximum DC voltage and reverse voltage of a single thyristor are _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 4. In the single-phase fully controlled bridge back electromotive force load circuit, when the control angle α is greater than the non-conduction angle D, the conduction angle Q of the thyristor is _ _ _ _ _ _ _ _ _ _; When the control angle A is less than the non-conducting angle D, the conducting angle Q of the thyristor is _ _ _ _ _ _. 5. From the point of view of input and output, the waveform of single-phase bridge full-control rectifier circuit is basically the same as that of _ _ _ _ _ _, except that the latter is suitable for the occasion where the output voltage is _ _ _ _ _. 6. In the three-phase half-wave controllable rectifier circuit with resistive load, the maximum DC voltage UFm borne by the thyristor is equal to _ _ _ _ _ _ _ _ _ _, The maximum phase shift range of thyristor control angle α is _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The trigger pulse phases of the three thyristors in the three-phase half-wave controllable rectifier circuit are sequentially different by _ _ _ _ _ _ _. When the inductor is loaded, the phase shift range of A is _ _ _ _ _ _. 8. When the three-phase bridge full-control rectifier circuit works with resistive load, the corresponding phase voltage of * * * cathode group thyristor is _ _ _ _ _ _ _ _, while the corresponding phase voltage of * * * anode group thyristor is _ _ _ _ _ _ _ _ _ _ _; In this circuit, the phase shift range of angle A is _ _ _ _ _ _ _, and the condition of continuous ud waveform is _ _ _ _ _ _. 9. For the three-phase half-wave controllable rectifier circuit, the average output voltage will be used for the influence of commutation overlap angle. 10. In the capacitive filtering single-phase uncontrolled rectifier load circuit with resistance, the output voltage is _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Ud is gradually approaching _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _1/kloc. In the capacitor filter three-phase uncontrolled rectifier load circuit with resistance, the critical condition of current id discontinuity and continuity is _ _ _ _ _ _ _ _ _, and the maximum reverse voltage borne by the diode in the circuit is _ _ _ _ _ _ _ _ U2. 12. In practical work, the voltage output by the rectifier circuit is a periodic non-sinusoidal function. When a changes from 0 to 90, the harmonic amplitude of the rectified voltage ud increases with the increase of a, and when a changes from 90 to 180, the harmonic amplitude of the rectified voltage ud follows A. 13. When the three-phase bridge full-control rectifier circuit is loaded with resistance and inductance, the reactance of AC side is set to zero, and the DC inductance L is large enough. When a = 30, the relationship between the effective value of the three-phase current and the DC current is I = _ _ _ _ _ _ ID, the number of subharmonics contained in the AC side current is _ _ _ _ _ _ _ _ _ _, and the number of harmonics contained in the rectified output voltage is _ _ _ _ _ _ _ _. 14. Double-reverse star controllable rectifier circuit with balanced reactor is suitable for _ _ _ _ _. When it is loaded with inductance, the phase shift range is _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 15. Multiplex rectifier circuit can improve _ _ _ _ _ _, including _ _ _ _ _ and _ _ _ _ two kinds of phase-shifting multiple connections. 16. In the inverter circuit, when the AC side is connected to the power grid, this circuit is called _ _ _ _ _ _. To realize active inverter, only _ _ _ _ _ _ circuit can be used. When the control angle is 0