JPS63137527U - - Google Patents
Info
- Publication number
- JPS63137527U JPS63137527U JP1987025058U JP2505887U JPS63137527U JP S63137527 U JPS63137527 U JP S63137527U JP 1987025058 U JP1987025058 U JP 1987025058U JP 2505887 U JP2505887 U JP 2505887U JP S63137527 U JPS63137527 U JP S63137527U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- time constant
- power failure
- momentary power
- reset
- 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
- 238000001514 detection method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/44—Transmit/receive switching
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/24—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage
- H02H3/247—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage having timing means
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Measurement Of Current Or Voltage (AREA)
- Emergency Protection Circuit Devices (AREA)
Description
第1図は本考案一実施例の回路図、第2図aお
よびbは実施例回路における各部のタイムチヤー
ト、第3図は従来例の回路図、第4図aおよびb
は従来例回路における各部のタイムチヤートを示
す。 1:レギユレータ、2:コンデンサ、3:抵抗
、4:比較回路、6:リセツト回路。
よびbは実施例回路における各部のタイムチヤー
ト、第3図は従来例の回路図、第4図aおよびb
は従来例回路における各部のタイムチヤートを示
す。 1:レギユレータ、2:コンデンサ、3:抵抗
、4:比較回路、6:リセツト回路。
Claims (1)
- CR時定数回路および比較回路を有する瞬断検
出回路において、上記CR時定数回路の前段にリ
セツト回路を接続し、このリセツト回路からの出
力によつて上記CR時定数回路を充放電させて、
電源の瞬断を検出することを特徴とした瞬断検出
回路。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987025058U JPS63137527U (ja) | 1987-02-23 | 1987-02-23 | |
US07/158,610 US4912774A (en) | 1987-02-23 | 1988-02-22 | Instantaneous voltage drop detector |
EP88301510A EP0280501B1 (en) | 1987-02-23 | 1988-02-23 | Instantaneous voltage drop detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987025058U JPS63137527U (ja) | 1987-02-23 | 1987-02-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS63137527U true JPS63137527U (ja) | 1988-09-09 |
Family
ID=12155325
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1987025058U Pending JPS63137527U (ja) | 1987-02-23 | 1987-02-23 |
Country Status (3)
Country | Link |
---|---|
US (1) | US4912774A (ja) |
EP (1) | EP0280501B1 (ja) |
JP (1) | JPS63137527U (ja) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2806589B2 (ja) * | 1990-01-23 | 1998-09-30 | 日本電気株式会社 | 移動電話装置 |
JP3015443B2 (ja) * | 1990-10-11 | 2000-03-06 | 株式会社東芝 | 無線電話装置 |
JPH04207986A (ja) * | 1990-11-30 | 1992-07-29 | Hitachi Ltd | インバータ装置 |
US5175871A (en) * | 1991-08-08 | 1992-12-29 | Ericsson/Ge Mobile Communication Holding Inc. | Power amplifier for a cellular telephone |
JPH06216827A (ja) * | 1993-01-20 | 1994-08-05 | Mitsubishi Electric Corp | 携帯電話装置 |
US6571091B1 (en) * | 1995-05-30 | 2003-05-27 | Motorola, Inc. | Power control method and apparatus suitable for use in a radio communication device |
JP2002287832A (ja) * | 2001-03-27 | 2002-10-04 | Sharp Corp | 送信装置 |
KR100447676B1 (ko) | 2002-12-11 | 2004-09-08 | 주식회사 팬택앤큐리텔 | 단말기 오프 방지 회로 및 방법 |
JP4849884B2 (ja) * | 2005-12-19 | 2012-01-11 | セイコーインスツル株式会社 | 生体情報送信機 |
KR101688144B1 (ko) * | 2010-06-16 | 2016-12-20 | 엘지전자 주식회사 | 이동통신 단말기 및 그의 전원 관리 방법 |
CN112415294A (zh) * | 2019-08-22 | 2021-02-26 | 上海中兴软件有限责任公司 | 电压瞬间下降的检测电路及车载诊断系统 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59170921A (ja) * | 1983-03-18 | 1984-09-27 | Hitachi Ltd | 停電検出回路 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3670246A (en) * | 1970-03-16 | 1972-06-13 | Forbro Design Corp | Under-voltage monitoring device having time delay means for regulated power supplies |
US3757302A (en) * | 1971-11-16 | 1973-09-04 | Addressograph Multigraph | Responsive power fail detection system |
DE3534574C3 (de) * | 1984-09-29 | 1998-05-20 | Pioneer Electronic Corp | Informationswiedergabeeinrichtung in einem Kraftfahrzeug |
AU584841B2 (en) * | 1985-05-23 | 1989-06-01 | Nec Corporation | Battery-powered mobile communications apparatus having transmitter reset function |
-
1987
- 1987-02-23 JP JP1987025058U patent/JPS63137527U/ja active Pending
-
1988
- 1988-02-22 US US07/158,610 patent/US4912774A/en not_active Expired - Lifetime
- 1988-02-23 EP EP88301510A patent/EP0280501B1/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59170921A (ja) * | 1983-03-18 | 1984-09-27 | Hitachi Ltd | 停電検出回路 |
Also Published As
Publication number | Publication date |
---|---|
EP0280501B1 (en) | 1994-01-12 |
EP0280501A1 (en) | 1988-08-31 |
US4912774A (en) | 1990-03-27 |