JPH0223122U - - Google Patents
Info
- Publication number
- JPH0223122U JPH0223122U JP9898188U JP9898188U JPH0223122U JP H0223122 U JPH0223122 U JP H0223122U JP 9898188 U JP9898188 U JP 9898188U JP 9898188 U JP9898188 U JP 9898188U JP H0223122 U JPH0223122 U JP H0223122U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- reset
- output
- power supply
- error amplifier
- 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 2
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Electronic Switches (AREA)
Description
第１図は本考案の一実施例の回路図、第２図は
同上の動作説明図、第３図は従来例の回路図、第
４図は同上の動作説明図である。
１はパワーオンリセツト回路、２は被リセツト
回路、３は定電圧回路、４はエラーアンプ、５は
コンパレータ、Ｃはコンデンサである。
FIG. 1 is a circuit diagram of an embodiment of the present invention, FIG. 2 is an explanatory diagram of the same operation, FIG. 3 is a circuit diagram of a conventional example, and FIG. 4 is an explanatory diagram of the same operation. 1 is a power-on reset circuit, 2 is a circuit to be reset, 3 is a constant voltage circuit, 4 is an error amplifier, 5 is a comparator, and C is a capacitor.
Claims (1)
エラーアンプを介してリセツトをかける被リセツ
ト回路に供給する電源回路と、上記エラーアンプ
の出力とアースとの間に接続されたコンデンサと
、上記エラーアンプの反転入力電圧と上記定電圧
回路の出力を分圧した電圧とを比較するコンパレ
ータとを備え、コンパレータの出力を被リセツト
回路のリセツト信号として用いて成ることを特徴
とするパワーオンリセツト回路。 A power supply whose power supply voltage is regulated by a constant voltage circuit,
A power supply circuit that supplies the circuit to be reset via the error amplifier, a capacitor connected between the output of the error amplifier and ground, and an inverting input voltage of the error amplifier and the output of the constant voltage circuit. A power-on reset circuit comprising a comparator for comparing divided voltages, and using the output of the comparator as a reset signal for a circuit to be reset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9898188U JPH0223122U (en) | 1988-07-26 | 1988-07-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9898188U JPH0223122U (en) | 1988-07-26 | 1988-07-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0223122U true JPH0223122U (en) | 1990-02-15 |
Family
ID=31325724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9898188U Pending JPH0223122U (en) | 1988-07-26 | 1988-07-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0223122U (en) |
-
1988
- 1988-07-26 JP JP9898188U patent/JPH0223122U/ja active Pending