The function of the 555 timer is mainly determined by two comparators. The output voltage of the them controls the state of the RS flip-flop and the discharge tube. It also contains 3 working states.

今回はタイマーIC「555」を使ってみましょう。 まず基本的な回路でLEDをチカチカさせた後、拡張してブザーを鳴らしてみます。最後にLED回路とブザー回路をつなげて、リズムマシーンを作ります。 555は長い歴史をもったチップです。最初のバージョンはシ ...

〜難しそうに見えて実はカンタン。555タイマーで遊ぶ“最初の一歩”〜 この記事で分かること NE555タイマーが何をするICなのか（超ざっくり理解できる） LEDを1個チカチカさせる“基本回路”の作り方 LEDを2個“交互点滅”させる方法 ブレッド ...

As 555 timer is robust, stable and most commonly used IC in the area of electronics and also use in many electronic circuits. This post gives an idea about 555 Timer IC pin diagram and its description ...

エンジニアとしてセンスを磨く方法はいくつかあると思うのだけど、私のお気に入りは過去の優れたマスターピース(技術的傑作)に触れることだと思います。 集積半導体におけるマスターピースの一つは間違いなく555タイマ、8本のピンと内部に2つの ...

Hans Camenzind, the designer of the popular 555 timer IC died this week in Silicon Valley. He was 78. My condolences to his family and friends. Hans came to the U.S. from Switzerland in 1960. He ...

This stunning piece of art is [Emily Velasco’s] take on the Atari Punk Console. It’s a freeform circuit that synthesizes sound using 555 timers. The circuit has been around for a long time, but her ...

You can use a microcontroller to build a clock. After all, a clock is just something that counts the passage of time. The only problem is that microcontrollers can’t track time very accurately. They ...