JPS59178730U - reset circuit - Google Patents
reset circuitInfo
- Publication number
- JPS59178730U JPS59178730U JP7269583U JP7269583U JPS59178730U JP S59178730 U JPS59178730 U JP S59178730U JP 7269583 U JP7269583 U JP 7269583U JP 7269583 U JP7269583 U JP 7269583U JP S59178730 U JPS59178730 U JP S59178730U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- constant voltage
- reset circuit
- power
- terminal
- 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
Landscapes
- Continuous-Control Power Sources That Use Transistors (AREA)
- Electronic Switches (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第1図は従来のリセット回路の一例の回路図、第2図A
−Cは第1図示の回路各部の波形図、第3図は本考案に
なるリセット回路の一実施例の回路図、第4図A−Cは
第3図示の回路各部の波形図である。
1・・・電源端子、2・・・制御回路、C1,C2・・
・コンデンサ、D□・・・ツェナーダイオード、D2・
・・ダイオード、Q2+ Q2・・・トランジスタ、R
工〜R4・・・抵抗。Figure 1 is a circuit diagram of an example of a conventional reset circuit, Figure 2A
-C is a waveform diagram of each part of the circuit shown in FIG. 1, FIG. 3 is a circuit diagram of an embodiment of the reset circuit according to the present invention, and FIGS. 4A to 4C are waveform diagrams of various parts of the circuit shown in FIG. 1...Power terminal, 2...Control circuit, C1, C2...
・Capacitor, D□... Zener diode, D2・
...Diode, Q2+ Q2...Transistor, R
Engineering~R4...Resistance.
Claims (1)
該定電圧回路の出力電圧をコンデンサと抵抗とて構成さ
れる微分回路に供給し、該電源の投入時に該微分回路で
生成されるパルスを用いて制御回路のリセットを行なう
リセット回路において、該電源遮断時に生ずる該電源端
子と該定電圧回路の出力端子との間の電位差によって導
通し該コンデンサの両端を短絡するトランジスタを設け
てなるリセット回路。The power supplied from the power terminal is stabilized by a constant voltage circuit,
In a reset circuit that supplies the output voltage of the constant voltage circuit to a differentiator circuit composed of a capacitor and a resistor, and resets a control circuit using a pulse generated by the differentiator circuit when the power source is turned on, the power source A reset circuit provided with a transistor that conducts and shorts both ends of the capacitor due to a potential difference between the power supply terminal and the output terminal of the constant voltage circuit that occurs when the power supply is cut off.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7269583U JPS59178730U (en) | 1983-05-16 | 1983-05-16 | reset circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7269583U JPS59178730U (en) | 1983-05-16 | 1983-05-16 | reset circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS59178730U true JPS59178730U (en) | 1984-11-29 |
Family
ID=30202830
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7269583U Pending JPS59178730U (en) | 1983-05-16 | 1983-05-16 | reset circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59178730U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62280916A (en) * | 1986-05-29 | 1987-12-05 | Seiko Epson Corp | Voltage regulator circuit |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4984687A (en) * | 1972-12-19 | 1974-08-14 | ||
JPS55116118A (en) * | 1979-03-01 | 1980-09-06 | Nippon Denso Co Ltd | Reset circuit of microcomputer |
-
1983
- 1983-05-16 JP JP7269583U patent/JPS59178730U/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4984687A (en) * | 1972-12-19 | 1974-08-14 | ||
JPS55116118A (en) * | 1979-03-01 | 1980-09-06 | Nippon Denso Co Ltd | Reset circuit of microcomputer |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62280916A (en) * | 1986-05-29 | 1987-12-05 | Seiko Epson Corp | Voltage regulator circuit |
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