多路防盜報(bào)警系統(tǒng)設(shè)計(jì)與仿真(特別版)-資料下載頁
2025-06-03 09:27本頁面
【正文】 istors, low noise and good longterm stability of results. From the above analysis, LM385 from + to10 μ is the working current of A~20mA, Zener diode , least maintain the current 10 μA, transistor maximum current 20 mA. Calculation of parameters is as follows: select guarantee that the output voltage R2,R3 resistance value is the value I want to design, such as the above 5/(120+364) = mA. This is a fixed input voltage: 9V, + end output is 5V, to guarantee (95)/R1= mA is less than 20 mA on it. Reference circuit design taking into account the load capacity. Output load current can be 20of LM385 (+) was equivalent to the load capacity is 20 mA. If R1,R2,R3 the resistance is too low, with a load capacity is weak. LM385 tolerance design device capacitance load, so it39。s easy to use reference for almost all applications. Wide dynamic range allowing it to use and good regulation of a variety of products. The LM385 very low power consumption enables useful on the circuit. The voltage reference of using portable meters, regulators or universal analog circuit and battery life close to expiration. In addition, wide operating current references allowed it to replace the old part of a tighter tolerance. 第 8 頁（共 12 頁） 另附： LM358 芯片部分資料 第 9 頁（共 12 頁） 第 10 頁（共 12 頁） 第 11 頁（共 12 頁） 第 12 頁（共 12 頁） 物理信息學(xué)院 08 電科二班 XXX 20211030XX
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