So if you replace the Buzzer with a relay coil - you can use the relay contacts to operate practically any type of outputdevice you like.You just need to make sure that the coil of your relay doesnot draw more than about 50 mA - otherwise the transistor might beoverloaded.
=======================================================================================这个monostable,资料说 把 buzzer 换成 relay coil,可以用在不同的电路。本人不懂电子,想请教各位网友,我想用这个 monostable 接在一个230V 的风干机,要如何安装?上面说的relay coil,又应该使用哪个款式的?在farnell上看到的relay,价钱不菲 不知道是不是我找错了对象