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fadis_'s profile
Fadis
Fadis
Fadis
@fadis_

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Fadis

@fadis_

組み込みから*NIXシステム、HPCまで、計算機をこよなく愛するゲームプログラマ。C++を関数型言語と間違えているタイプのC++er。遺伝的FM音源とかの人。 丼:@fadis@mstdn.jp 欲しい物リスト:http://amzn.to/Mzt8F0 

大阪
github.com/Fadis/
Joined July 2010

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    1. 対鉱物用武装‏ @kikairoya 18 Dec 2015
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      だれかておるみんにレクチフィアーとスイッチングとショットキーの区別教えたげて @fadis_

      1 reply 2 retweets 1 like
    2. Fadis‏ @fadis_ 18 Dec 2015
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      Replying to @kikairoya

      @kikairoya @kotatsu_mi 無茶ぶりするわー。スイッチングとショットキバリアの違いは実用上問題になる長さの逆回復時間(順バイアスから逆バイアスになった時に逆方向に電流を流してしまう時間)の有無。整流器は電流を一方向にしか流さない素子で、ダイオードはその1つ

      1 reply 2 retweets 2 likes
    3. Fadis‏ @fadis_ 18 Dec 2015
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      Replying to @fadis_

      @kikairoya @kotatsu_mi 昇圧DC/DCに繋ぐダイオードはインダクタが持ってるエネルギーを吐き切って逆バイアスになった時にすぐに電流を遮断できないとスイッチング用の足に出力側の電圧がかかる恐れがあるのが問題なんじゃないかな(と思ってるけど自信は無い

      1 reply 1 retweet 1 like
    4. 対鉱物用武装‏ @kikairoya 18 Dec 2015
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      Replying to @fadis_

      @fadis_ @kotatsu_mi "逆バイアスになった時"(=スイッチノードを閉じた時)なので電圧は問題ないが、逆電流がスイッチノードを経由してどーんと流れるから出力Cに貯めたエネルギが逃げる上にジュール熱で燃える(物理)

      1 reply 1 retweet 4 likes
    5. Fadis‏ @fadis_ 18 Dec 2015
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      Replying to @kikairoya

      @kikairoya @kotatsu_mi Oh…

      1 reply 0 retweets 0 likes
    6. まちカドおるみん‏ @kotatsu_mi 18 Dec 2015
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      Replying to @fadis_

      @fadis_ @kikairoya さすがにダイオードのその3つの役割はしってて、(何年か前に授業でやったもんで、レクチファイアって言い回しは知らなかったのだけど)、ただ手元の素子がどれの為のダイオードなのか、どの用途にどういう特性のダイオードを使うべきかわかってない(致命的

      1 reply 0 retweets 0 likes
      Fadis‏ @fadis_ 18 Dec 2015
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      Replying to @kotatsu_mi

      @kotatsu_mi @kikairoya ダイオードの種類くらいデータシートに書いてあるよ。基本的に使い分けは 戻るとヤバい→ショットキバリア 戻っても良いけど耐圧→スイッチング じゃないかな。自分で判断つかなくても普通データシートの回路例にはどういうの使うべきか書いてある

      7:33 PM - 18 Dec 2015
      • 1 Retweet
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      • まちカドおるみん
      1 reply 1 retweet 1 like
        1. 対鉱物用武装‏ @kikairoya 18 Dec 2015
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          Replying to @fadis_

          @fadis_ @kotatsu_mi 逆バイアスリーク電流が問題にならなければ全部SBDでよい

          0 replies 1 retweet 1 like
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