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The 555 timer IC is an integrated circuit (chip) used in a variety of timer, pulse generation and oscillator applications. The part is still in widespread use, thanks to its low price and ubiquity. The 556 timer is simply two 555 timers in a single package.

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Timer 555 AC square wave

Im currently trying to build a square wave circuit using the 555 Timer (see picture). Currently it is producing a square wave between 0 to 5V, duty cycle is about 50% and a frequency of about 50kHz. …
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