Ready to make some noise? We are going to build a “black box” test circuit using the 555 timer. A black box is a circuit that’s there when you need it, and in this one we will build it to produce a tone for us when we need it. Trust me, this one is a lot of fun.
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In the context of this experiment, a black box is a device that has circuity that is unknown to the user. The 555 timer IC is considered a black box because you don’t need to know how it works, you just need to know how to make the connections to its pins.
What is a black box?
It’s a size of capacitor, and it’s called a “zero-point-one-micro-farad-capacitor”. Find one here at Jameco.
what is a .1 micro pherit capasitor?