Timer 555 - Elektronika di Meccano
The 555 Integrated Circuit (IC) is an easy to use timer that has many applications in Meccano modelling. It is widely used in electronic circuits and this popularity means it is also very cheap to purchase, typically costing around 30p.
Versions of the 555 are available for low current applications or use in extreme temperatures. A 'dual' version called the 556 is also available which includes two independent 555 ICs in one package.
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