警笛发生器-NE555
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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