JPS5866720U - Low power supply voltage warning circuit - Google Patents

Low power supply voltage warning circuit

Info

Publication number
JPS5866720U
JPS5866720U JP16251181U JP16251181U JPS5866720U JP S5866720 U JPS5866720 U JP S5866720U JP 16251181 U JP16251181 U JP 16251181U JP 16251181 U JP16251181 U JP 16251181U JP S5866720 U JPS5866720 U JP S5866720U
Authority
JP
Japan
Prior art keywords
power supply
supply voltage
warning circuit
switching means
voltage
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
Application number
JP16251181U
Other languages
Japanese (ja)
Inventor
斎藤　正利
Original Assignee
株式会社富士通ゼネラル
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社富士通ゼネラル filed Critical 株式会社富士通ゼネラル
Priority to JP16251181U priority Critical patent/JPS5866720U/en
Publication of JPS5866720U publication Critical patent/JPS5866720U/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Amplification And Gain Control (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Emergency Protection Circuit Devices (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

【図面の簡単な説明】[Brief explanation of drawings]

図面は本考案に係る電源電圧の低下警告回路の一実施例
を示す回路図である。 図面中、Ｑｌ、Ｑ２は駆動用トランジスタ、Ｑ３．Ｑ４
はミューティング用トランジスタ、Ｄｌはツェナーダイ
オード、Ｄ２は発光ダイオード。The drawing is a circuit diagram showing an embodiment of a power supply voltage drop warning circuit according to the present invention. In the drawing, Ql and Q2 are driving transistors, Q3. Q4
is a muting transistor, Dl is a Zener diode, and D2 is a light emitting diode.

Claims (3)

【実用新案登録請求の範囲】[Scope of utility model registration request] （１）バッテリーを内蔵しその電源電圧が低下したとき
には警報するようにしてなる電子機器において、 信号伝送路に介挿してなるミューティング素子と、前記
ミューティング素子を正常動作の電圧範囲内で駆動する
スイッチング手段と、電源電圧が所定値以下になったと
き前記スイッチング手段の動作を制御する電圧検出素子
と、前記スイッチング手段の動作に応動し正常動作の電
圧範囲内でのみ点灯する発光素子とを備え、バッテリー
電源が所定電圧以下になったときそれを電圧検出素子に
て検出し、スイッチング手段を不動作状態となすと共に
発光素子の点灯表示を停止し、それと同時にミューティ
ング素子が動作状態となるよう−に構成してなる電源電
圧の低下警告回路。(1) In an electronic device that has a built-in battery and is configured to issue an alarm when its power supply voltage drops, a muting element inserted in a signal transmission path and the muting element are driven within a normal operating voltage range. a voltage detection element that controls the operation of the switching means when a power supply voltage becomes equal to or less than a predetermined value; and a light emitting element that responds to the operation of the switching means and lights up only within a normal operating voltage range. When the battery power supply becomes lower than a predetermined voltage, the voltage detecting element detects this, puts the switching means in an inoperable state, stops the lighting display of the light emitting element, and at the same time, the muting element becomes in an operating state. A power supply voltage drop warning circuit configured as follows. （２）スイッチング手段を構成するトランジスタ回路の
前段がＰＮＰ型トランジスタである実用新案　　　　　
□登録請求の範囲第１項記載の電源電圧の低下警告回路
。(2) Utility model in which the front stage of the transistor circuit constituting the switching means is a PNP transistor
□A power supply voltage drop warning circuit according to registered claim 1. （３）電圧検出素子がツェナーダイオー：゛である実用
新案登録請求の範囲第１項記載の電源電圧の低下警告回
路。(3) The power supply voltage drop warning circuit according to claim 1, wherein the voltage detection element is a Zener diode.
JP16251181U 1981-10-29 1981-10-29 Low power supply voltage warning circuit Pending JPS5866720U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16251181U JPS5866720U (en) 1981-10-29 1981-10-29 Low power supply voltage warning circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16251181U JPS5866720U (en) 1981-10-29 1981-10-29 Low power supply voltage warning circuit

Publications (1)

Publication Number Publication Date
JPS5866720U true JPS5866720U (en) 1983-05-06

Family

ID=29954821

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16251181U Pending JPS5866720U (en) 1981-10-29 1981-10-29 Low power supply voltage warning circuit

Country Status (1)

Country Link
JP (1) JPS5866720U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6342511A (en) * 1986-08-09 1988-02-23 Fujitsu Ten Ltd Volume control device in audio system on vehicle

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5652309B2 (en) * 1975-03-24 1981-12-11

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5652309B2 (en) * 1975-03-24 1981-12-11

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6342511A (en) * 1986-08-09 1988-02-23 Fujitsu Ten Ltd Volume control device in audio system on vehicle

Similar Documents

Publication Publication Date Title
JPS5866720U (en) Low power supply voltage warning circuit
JPH049619Y2 (en)
JPH0112349Y2 (en)
JPS61137289U (en)
JPS6023732Y2 (en) Seltiecka
JPS5950188U (en) Speaker excessive input warning device
JPH0168593U (en)
JPS6282725A (en) Display device for electronic muting low frequency amplifier
JPS5868699U (en) Emergency light lighting device
JPS58192499U (en) Indicator light disconnection detection device
JPH0391985U (en)
JPS5973850U (en) Muting circuit
JPS5844692U (en) Power supply line disconnection detection circuit for fire detectors, etc.
JPS6079835U (en) Electronic switch overcurrent detection circuit
JPS5866436U (en) Malfunction prevention circuit for microprocessors, etc.
JPS60124231U (en) short circuit protection circuit
JPS611943U (en) Transmission power surge protection circuit
JPS603886U (en) light emitting diode display device
JPS6081047U (en) Automotive lamp breakage detection circuit
JPS5854139U (en) Sensor circuit for device mode detection
JPS5848046U (en) Mode display circuit
JPS58110861U (en) voltage display circuit
JPS60193717U (en) switching circuit
JPS58167249U (en) Vehicle warning system with a silencing function in the event of a hazard
JPS6282825A (en) Display device for electronic nuting low frequency amplifier