JPS6284232U - - Google Patents
Info
- Publication number
- JPS6284232U JPS6284232U JP17363885U JP17363885U JPS6284232U JP S6284232 U JPS6284232 U JP S6284232U JP 17363885 U JP17363885 U JP 17363885U JP 17363885 U JP17363885 U JP 17363885U JP S6284232 U JPS6284232 U JP S6284232U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- output
- circuit
- dividing means
- inverter
- 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 3
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Electronic Switches (AREA)
Description
第１図は本考案なるリセツト回路の一実施例の
構成を示した回路図、第２図は第１図の回路を使
用した機器の一構成例を示したブロツク図、第３
図は第１図の回路の動作を説明するために用いる
タイミング図、第４図は従来のリセツト回路の一
構成例を示した回路図、第５図は従来のヒステリ
シス特性を有するリセツト回路の一構成例を示し
た回路図である。
１〜４…抵抗、５…基準電圧部、６…電圧比較
部、７…抵抗、８…コンデンサ、９…インバータ
、１０及び１１…分圧部、１２…時定数回路、１
３…定電圧電源、１４…リセツト回路、１５…機
器の主回路。
Fig. 1 is a circuit diagram showing the configuration of an embodiment of the reset circuit of the present invention, Fig. 2 is a block diagram showing an example of the configuration of a device using the circuit of Fig. 1, and Fig. 3
The figure is a timing diagram used to explain the operation of the circuit in Figure 1, Figure 4 is a circuit diagram showing an example of the configuration of a conventional reset circuit, and Figure 5 is an example of a conventional reset circuit with hysteresis characteristics. FIG. 2 is a circuit diagram showing a configuration example. 1 to 4...Resistor, 5...Reference voltage section, 6...Voltage comparison section, 7...Resistor, 8...Capacitor, 9...Inverter, 10 and 11...Voltage dividing section, 12...Time constant circuit, 1
3... Constant voltage power supply, 14... Reset circuit, 15... Main circuit of the device.
Claims (1)
機器を自動的にリセツトするリセツトパルスを発
生する回路において、前記電源電圧を分圧する第
１の分圧手段と、基準電圧を発生する基準電圧発
生手段と、該基準電圧発生手段に一端が接続され
た第２の分圧手段と、前記第１の分圧手段の第１
の分圧値と前記第２の分圧手段の第２の分圧値と
を比較し、前記第１の分圧値が前記第２の分圧値
より大きいときは出力がハイインピーダンスにな
り、逆に前記第１の分圧値が前記第２の分圧値よ
り小さいときは出力がローインピーダンスになる
出力部を持つ電圧比較手段と、抵抗とコンデンサ
よりなる時定数回路と、論理レベルを反転するイ
ンバータとから成り、前記電圧比較手段の出力、
前記時定数回路の抵抗とコンデンサの接続点及び
前記インバータの入力が接続され、前記インバー
タの出力と前記第２の分圧手段の前記基準電圧発
生手段に接続されていない他端とが接続されてな
るリセツト回路。 In a circuit that generates a reset pulse that automatically resets equipment when power is turned on or when the power supply voltage drops, the circuit comprises: a first voltage dividing means for dividing the power supply voltage; and a reference voltage generation means for generating a reference voltage. , a second voltage dividing means whose one end is connected to the reference voltage generating means, and a first voltage dividing means of the first voltage dividing means.
and a second partial pressure value of the second voltage dividing means, and when the first partial pressure value is larger than the second partial pressure value, the output becomes high impedance, On the contrary, when the first divided voltage value is smaller than the second divided voltage value, the output is a low impedance voltage comparing means having an output section, a time constant circuit comprising a resistor and a capacitor, and a logic level inversion means. an inverter, the output of the voltage comparison means;
A connection point between a resistor and a capacitor of the time constant circuit and an input of the inverter are connected, and an output of the inverter and the other end of the second voltage dividing means that is not connected to the reference voltage generating means are connected. A reset circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17363885U JPS6284232U (en) | 1985-11-13 | 1985-11-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17363885U JPS6284232U (en) | 1985-11-13 | 1985-11-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6284232U true JPS6284232U (en) | 1987-05-29 |
Family
ID=31111287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17363885U Pending JPS6284232U (en) | 1985-11-13 | 1985-11-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6284232U (en) |
-
1985
- 1985-11-13 JP JP17363885U patent/JPS6284232U/ja active Pending
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