JP4348216B2 - ボルテージディテクタ - Google Patents
ボルテージディテクタ Download PDFInfo
- Publication number
- JP4348216B2 JP4348216B2 JP2004074423A JP2004074423A JP4348216B2 JP 4348216 B2 JP4348216 B2 JP 4348216B2 JP 2004074423 A JP2004074423 A JP 2004074423A JP 2004074423 A JP2004074423 A JP 2004074423A JP 4348216 B2 JP4348216 B2 JP 4348216B2
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- JP
- Japan
- Prior art keywords
- capacitor
- circuit
- voltage
- level
- resistor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Description
12 キャパシタ
13 Nチャンネルトランジスタ
14 インバータ
15 センサ
16 バッファ
21 Pチャンネルトランジスタ
22 ゲート回路
a ノード
Claims (2)
- 電源とグランドとの間に直列接続された抵抗とキャパシタとからなり、該抵抗を介して該キャパシタを充電する時定数回路と、
前記キャパシタ両端を短絡するとともに所定の計時開始制御信号の入力を受けて該キャパシタを開放することにより前記時定数回路による時間計測の開始時点を定めるスイッチ回路と、
前記キャパシタへの充電により前記抵抗と前記キャパシタとの接続点の電位が所定の電位にまで変化した時点でタイミング信号を発生するタイミング信号発生回路と、
前記計時開始制御信号と前記タイミング信号との双方が生成されていることを受けて、前記キャパシタを、前記抵抗を介する経路とは別の経路で充電する充電回路とを備えたことを特徴とするボルテージディテクタ。 - 電源が投入されたことを受けて前記計時開始制御信号を出力するセンサ回路を備えたことを特徴とする請求項1記載のボルテージディテクタ。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004074423A JP4348216B2 (ja) | 2004-03-16 | 2004-03-16 | ボルテージディテクタ |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004074423A JP4348216B2 (ja) | 2004-03-16 | 2004-03-16 | ボルテージディテクタ |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005268896A JP2005268896A (ja) | 2005-09-29 |
JP4348216B2 true JP4348216B2 (ja) | 2009-10-21 |
Family
ID=35093021
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004074423A Expired - Fee Related JP4348216B2 (ja) | 2004-03-16 | 2004-03-16 | ボルテージディテクタ |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4348216B2 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5535766B2 (ja) * | 2010-05-27 | 2014-07-02 | ラピスセミコンダクタ株式会社 | タイマー回路 |
-
2004
- 2004-03-16 JP JP2004074423A patent/JP4348216B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
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JP2005268896A (ja) | 2005-09-29 |
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