| 一种实用低频功率放大器的制作 |
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| 引用本文： | 张培,苏品刚,孙加存.一种实用低频功率放大器的制作[J].苏州市职业大学学报,2010,21(1):41-43. |
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| 作者姓名： | 张培 苏品刚 孙加存 |
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| 作者单位： | 苏州市职业大学,电子信息工程系,江苏,苏州,215104 |
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| 摘 要： | 给出了一种低频功率放大器的设计制作过程，包括电压放大电路、FPGA控制的显示电路、带阻滤波器等部分．实验显示，当输入电压有效值为5mV的正弦信号时，在8Ω负载上的输出功率可达5W以上，输出波形无明显失真，输出噪声电压有效值不超过5mV，通频带范围为10Hz～50kHz．基于FPGA编程控制，能够测量并LCD显示输出功率、直流电源的供给功率和整机效率．
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| 关 键 词： | 低频功率放大器 电压放大 FPGA LCD |
Design of a Practical Low-frequency Power Amplifier |
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| ZHANG Pei,SU Pin-gang,SUN Jia-cun.Design of a Practical Low-frequency Power Amplifier[J].Journal of Suzhou Vocational University,2010,21(1):41-43. |
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| Authors: | ZHANG Pei SU Pin-gang SUN Jia-cun |
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| Institution: | ZHANG Pei,SU Pin-gang,SUN Jia-cun(Department of Electronic Information Engineering,Suzhou Vocational University,Suzhou 215104,China) |
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| Abstract: | The design of a kind of low-frequency power amplifier was given, including a voltage amplification circuit, a display circuit based on FPGA, and a BEF filter. The experiments show that when the input voltage is 5 mV RMS, the output power is up to 5 W without significant distortion on an 8 Ωload. The noise does not exceed 5mV and the pass band range is 10 Hz-50 kHz. The output power, the supply power and the efficiency could be measured and displayed on LCD based on FPGA. |
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| Keywords: | FPGA LCD |
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