JPH02108123U - - Google Patents
Info
- Publication number
- JPH02108123U JPH02108123U JP1537989U JP1537989U JPH02108123U JP H02108123 U JPH02108123 U JP H02108123U JP 1537989 U JP1537989 U JP 1537989U JP 1537989 U JP1537989 U JP 1537989U JP H02108123 U JPH02108123 U JP H02108123U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- capacitor
- terminal
- series
- 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.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 claims description 7
- 238000007493 shaping process Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Description
第１図は本考案の実施例を示す回路図、第２図
は従来のパワーオンリセツト回路を示す回路図、
第３図はパワーオンリセツト回路の動作説明図で
ある。
１…電源端子、２…コンデンサ接続端子、３…
接地端子、４…リセツト出力端子、５…ＰＭＯＳ
トランジスタ、６…ＮＭＯＳトランジスタ、７，
１２…抵抗、８…スイツチ、９…電源、１０…コ
ンデンサ、１１…ＰＮＰトランジスタ、１２…ダ
イオード。
Fig. 1 is a circuit diagram showing an embodiment of the present invention, Fig. 2 is a circuit diagram showing a conventional power-on reset circuit,
FIG. 3 is an explanatory diagram of the operation of the power-on reset circuit. 1...Power supply terminal, 2...Capacitor connection terminal, 3...
Ground terminal, 4...Reset output terminal, 5...PMOS
Transistor, 6...NMOS transistor, 7,
12...Resistor, 8...Switch, 9...Power source, 10...Capacitor, 11...PNP transistor, 12...Diode.
Claims (1)
ンサとを直列に接続してその両端に電源を接続す
るＲＣ回路と、 コレクタを前記ＲＣ回路のコンデンサ側の端子
に接続し、エミツタを前記直列回路とコンデンサ
の接続点に接続し、ベースを前記ＲＣ回路の直列
回路側の端子に接続すると共に抵抗を介して前記
ＲＣ回路のコンデンサ側の端子を接続したトラン
ジスタと、 入力側を前記トランジスタのエミツタ・コレク
タ間に接続した波形整形回路と を設け、前記ダイオードは前記コンデンサの放電
時に逆バイアスとなる向きであることを特徴とす
るパワーオンリセツト回路。[Claims for Utility Model Registration] An RC circuit in which a series circuit consisting of a diode and a resistor and a capacitor are connected in series and a power supply is connected to both ends thereof, and a collector is connected to a terminal on the capacitor side of the RC circuit, a transistor whose emitter is connected to the connection point between the series circuit and the capacitor, whose base is connected to the terminal on the series circuit side of the RC circuit, and to the terminal on the capacitor side of the RC circuit via a resistor; A power-on reset circuit comprising: a waveform shaping circuit connected between the emitter and collector of the transistor, and the diode is oriented to be reverse biased when the capacitor is discharged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1537989U JPH02108123U (en) | 1989-02-14 | 1989-02-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1537989U JPH02108123U (en) | 1989-02-14 | 1989-02-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02108123U true JPH02108123U (en) | 1990-08-28 |
Family
ID=31227385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1537989U Pending JPH02108123U (en) | 1989-02-14 | 1989-02-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02108123U (en) |
-
1989
- 1989-02-14 JP JP1537989U patent/JPH02108123U/ja active Pending