警笛发生器-NE555
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这是简单的电路图警笛声，线路图可以应用于对电机或车下的警报声。所使用的电子元件是水果IC NE555作为非稳态多谐振荡器。警笛的频率控制IC NE555脚5号。下面是一个示意图：
原文：
Simple circuit diagram of this is police sirens, circuit diagram can be applied to the siren placed on the motor or car. Electronic components used is 2 fruits IC NE555 as astable multivibrators. The frequency of police sirens are controlled by IC NE555 Pin no.5. The following is a schematic drawing:
其他参考电路
原文：
Simple circuit diagram of this is police sirens, circuit diagram can be applied to the siren placed on the motor or car. Electronic components used is 2 fruits IC NE555 as astable multivibrators. The frequency of police sirens are controlled by IC NE555 Pin no.5. The following is a schematic drawing:
警笛电路元件：
IC NEE555 = 2个
2.2K欧姆电阻= 2个
电阻47KOhm = 1个
电容0.01 UF = 1个
电容器47 UF = 1个
电容0.1 uF的
电容= 1件1 = 1个
电位uF/16V47千欧= 1个
电位器100千欧= 1个
扬声器= 1个
微动开关= 1个
电源5V - 15V
其他参考电路
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