大师作文网求一高手用英文写一电器元件介绍
来源：学生作业帮 编辑：大师作文网作业帮 分类：英语作业 时间：2024/11/15 21:59:27
求一高手用英文写一电器元件介绍
要求：
1,不要太多高级词汇,4级的就够了
2,字数在100左右就可以了,不要太多
3,最好是在星期天的晚上之前出来,完了就不行了
4,不胜感激
要求：
1,不要太多高级词汇,4级的就够了
2,字数在100左右就可以了,不要太多
3,最好是在星期天的晚上之前出来,完了就不行了
4,不胜感激
关于电路形式的选择,笔者以为,厂家推荐的电路以电压反馈型居多,且给出的指标也是在此基础上测试出来的,既然推荐,该电路应该能比较好地发挥集成块的性能,实际上也是如此.电流反馈与直流伺服是对集成功放应用的有益尝试,但结果不应作过分夸大.笔者用LM1875分别制作过两种反馈形式的功放,主观听感并无多少差别.直流化是必要的,对于低失调电压的品种(如LM1875),可以直接取消反向输入端对地电容实现直流化.直流伺服电路使线路复杂化,笔者认为没有必要采用.
直流电压不宜取得过高,否则不仅集成块发热严重,而且音质劣化,还可能引发过压保护电路的误动作.应优先使用厂家推荐电压,若没有,可用极限电压×85％得到直流电压,再以直流电压除以1．25得交流电压.
功放无需使用稳压电源,但电源的功率容量一定要足够.变压器的功率可取总输出功率的两倍,并作好屏蔽.整流管要选低内阻的,且在每个管子两端并上一只小电容.滤波电容容量要适可而止,不要盲目求大,可按每10W2200μF计算.若资金充裕,用在变压器上效果更明显.
On the circuit forms of choice,I think that the manufacturers recommended voltage feedback circuit to the majority,and the indicators are also given on the basis of this test,with the recommendation,the circuit should be able to play Manifold relatively good performance,actually as well.Current feedback and DC servo amplifier is integrated application of a useful experiment,but the results should not be exaggerated.The author produced by the two LM1875 form of feedback amplifier,and does not have much sense of subjective listening difference.DC is necessary for low offset voltage species (such as the LM1875),can be directly input to cancel the reverse of DC-capacitor.DC servo circuit lines so complicated,I believe that there is no need to use.
DC voltage should not be made too high,otherwise Manifold serious fever,and quality deterioration,but also may trigger overvoltage protection circuit misoperation.Priority should be given to manufacturers recommend the use of voltage,and if not,can be used threshold voltage × 85 per cent of DC voltage,and then divided by 1.25 in the DC voltage AC voltage.
Amplification without the use of power supply,the power supply capacity must be adequate.The power transformer desirable twice the total output power,and for shielding.Zhengliuguan low resistance to the election,and both ends of each pipe,and a small capacitor.Enough is enough capacity to filter capacitor,and should not blindly seek large,10 per W2200 μ F calculation.If funded,with the more obvious effect on the transformer.
能用上马?
直流电压不宜取得过高,否则不仅集成块发热严重,而且音质劣化,还可能引发过压保护电路的误动作.应优先使用厂家推荐电压,若没有,可用极限电压×85％得到直流电压,再以直流电压除以1．25得交流电压.
功放无需使用稳压电源,但电源的功率容量一定要足够.变压器的功率可取总输出功率的两倍,并作好屏蔽.整流管要选低内阻的,且在每个管子两端并上一只小电容.滤波电容容量要适可而止,不要盲目求大,可按每10W2200μF计算.若资金充裕,用在变压器上效果更明显.
On the circuit forms of choice,I think that the manufacturers recommended voltage feedback circuit to the majority,and the indicators are also given on the basis of this test,with the recommendation,the circuit should be able to play Manifold relatively good performance,actually as well.Current feedback and DC servo amplifier is integrated application of a useful experiment,but the results should not be exaggerated.The author produced by the two LM1875 form of feedback amplifier,and does not have much sense of subjective listening difference.DC is necessary for low offset voltage species (such as the LM1875),can be directly input to cancel the reverse of DC-capacitor.DC servo circuit lines so complicated,I believe that there is no need to use.
DC voltage should not be made too high,otherwise Manifold serious fever,and quality deterioration,but also may trigger overvoltage protection circuit misoperation.Priority should be given to manufacturers recommend the use of voltage,and if not,can be used threshold voltage × 85 per cent of DC voltage,and then divided by 1.25 in the DC voltage AC voltage.
Amplification without the use of power supply,the power supply capacity must be adequate.The power transformer desirable twice the total output power,and for shielding.Zhengliuguan low resistance to the election,and both ends of each pipe,and a small capacitor.Enough is enough capacity to filter capacitor,and should not blindly seek large,10 per W2200 μ F calculation.If funded,with the more obvious effect on the transformer.
能用上马?