JPS60132216A - Dc power source display device - Google Patents
Dc power source display deviceInfo
- Publication number
- JPS60132216A JPS60132216A JP24016983A JP24016983A JPS60132216A JP S60132216 A JPS60132216 A JP S60132216A JP 24016983 A JP24016983 A JP 24016983A JP 24016983 A JP24016983 A JP 24016983A JP S60132216 A JPS60132216 A JP S60132216A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- power source
- turned
- zener diode
- power supply
- 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
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/565—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor
- G05F1/569—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection
- G05F1/571—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection with overvoltage detector
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Continuous-Control Power Sources That Use Transistors (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、小形テレビジョン受像機等の直流電源電圧の
構成とその問題点
最近、屋外用の小型テレ−ビジョン受像機が普及してい
るが、屋外用の電源としては乾電池、蓄電池、自動車搭
載蓄電池等の直流電源が主流となっている。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to the structure of the DC power supply voltage of small television receivers, etc. and its problems.Recently, small outdoor television receivers have become popular. DC power sources such as dry batteries, storage batteries, and automobile-mounted storage batteries are mainstream as outdoor power sources.
このような直流電源を用いる場合、受像中に電源電圧が
低下し受像機の性能を満足できなくなったシ、電源の性
能を損うことになる恐れがある。When such a DC power source is used, there is a risk that the power supply voltage will drop during image reception and the performance of the receiver will no longer be satisfied, which may impair the performance of the power source.
従来の装置では、上記のような不都合な電圧に低下する
と自動的に受像機の電源をオフにしたり、全く保護回路
がないと上記の問題が発生したりする。また、自動的に
電源をオフにするものでは、使用者Ｉ／′ｉ電圧レベル
を検知することができないだめに屋外での使用中に電源
オフとなれば代替電源を予め用意しておかないと使用で
きなくなるという不便がある。Conventional devices either automatically turn off the receiver when the voltage drops to such an undesirable level, or the problems described above occur if there is no protection circuitry at all. Additionally, devices that automatically turn off the power cannot detect the user's I/'i voltage level, so if the power is turned off during outdoor use, an alternative power source must be prepared in advance. There is an inconvenience that it becomes unusable.
発明の目的
本発明はかかる不都合を解消して、直流電源の電圧が低
下したときに使用者に簡単に検知させ、代替電源が必要
か否かを判断させることのできる表示装置を提供するこ
とを目的とする。OBJECTS OF THE INVENTION It is an object of the present invention to provide a display device that eliminates such inconveniences and allows a user to easily detect when the voltage of a DC power source has dropped and determine whether or not an alternative power source is required. purpose.
発明の構成
本発明による電源電圧表示装置は、一端に直流電源電圧
が加えられるツェナーダイオードの他端をベースに接続
し、印加される直流電源電圧が所定値以上であると導通
し所定値以下になると遮断するトランジスタと、このト
ランジスタの遮断によシ直流電圧が印加されると動作す
る非安定マルチバイブレータと、この非安定マルチバイ
プレーも９許劣竜に接続された発光素子とを備え、直流
電源の低下時に非安定マルチバイブレークにより発光素
子を点滅させることにより、直流電源の電圧の低下状態
を報知することができるものである。Structure of the Invention The power supply voltage display device according to the present invention includes a Zener diode to which a DC power voltage is applied to one end, the other end of which is connected to a base, and conducts when the applied DC power voltage is above a predetermined value and becomes below a predetermined value. It is equipped with a transistor that shuts off when the transistor is cut off, an unstable multivibrator that operates when a DC voltage is applied to cut off this transistor, and a light emitting element connected to the non-stable multivibrator. By blinking the light emitting element using an unstable multi-by-break when the voltage decreases, it is possible to notify the state of a decrease in the voltage of the DC power supply.
実施例の説明 以下、本発明の一実施例を示す図面に従って説明する。Description of examples DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.
直流電源５の電圧が十分高い時は、ツェナーダイオード
１がオンし、スイッチトランジスタ２はオンする。この
ため、スイッチトランジスタ２のコレクタはトランジス
タのＶＣＥＳＡＴとなりほぼ０■となる。３は非安定マ
ルチバイブレータで、上記の状態では発振しないため、
発光ダイオード（ＬＥＤ）４は点滅しない。When the voltage of the DC power supply 5 is sufficiently high, the Zener diode 1 is turned on and the switch transistor 2 is turned on. Therefore, the collector of the switch transistor 2 becomes VCESAT of the transistor and becomes approximately 0. 3 is an unstable multivibrator and does not oscillate under the above conditions, so
The light emitting diode (LED) 4 does not blink.
次に、直流電源５の電圧が徐々に下がシ、ツェナーダイ
オード１及びスイッチトランジスタ２がオフしてしまう
ベース・エミッタ電圧の和以上になろうとすると、ツェ
ナーダイオード１はカットオフとなり、スイッチトラン
ジスタ２はオフしコレクタは直流電源６の電圧に上がる
。このため、非安定マルチバイブレータ３は発振を開始
する。Next, when the voltage of the DC power supply 5 gradually decreases and becomes higher than the sum of the base-emitter voltages at which the Zener diode 1 and the switch transistor 2 are turned off, the Zener diode 1 is cut off and the switch transistor 2 is turned off. is turned off and the voltage of the collector rises to the voltage of the DC power supply 6. Therefore, the unstable multivibrator 3 starts oscillating.
この発振に伴ない非安定マルチバイブレータ３に付加さ
れたＬＥＤ４が点滅する。Along with this oscillation, the LED 4 attached to the unstable multivibrator 3 blinks.
その点敏開始電圧は、直流電源５及びセット負荷６の条
件によりツェナーダイオード１で自由に選択することが
できる。The point sensitivity starting voltage can be freely selected by the Zener diode 1 depending on the conditions of the DC power supply 5 and the set load 6.
このようにすることにより、直流電源の保獲と使用者に
便利さを与えることができる。By doing so, it is possible to conserve DC power and provide convenience to the user.
発明の効果
このように、本発明によれば、直流電源の電圧低下を発
光素子で報知するようにしたことにより、例えば発光素
子が点滅し始めて数分後にテレビ７ヨン受像機等の性能
が損われるとすると、その間に別電源捷たは新規直流電
源を用意することが可°゛ 能となり、装置の性能が損
われてしまうということをなくすることができる。Effects of the Invention As described above, according to the present invention, by using a light-emitting element to notify a voltage drop in a DC power source, the performance of a television set, etc., will be impaired, for example, several minutes after the light-emitting element starts blinking. If this happens, it will be possible to switch to a separate power source or prepare a new DC power source during that time, which will prevent the performance of the device from being impaired.
図は本発明の一実施例における直流電源表示装置の回路
図である。
１・・・・・・ツェナーダイオード、２・・・・・・ス
イッチングトランジスタ、３・・・・・・非安定マルチ
バイブレーク、４・・・・・−発光ダイオード、５・・
・・直流電源、６・・・・・・負荷。The figure is a circuit diagram of a DC power supply display device according to an embodiment of the present invention. 1...Zener diode, 2...Switching transistor, 3...Unstable multi-vibration break, 4...-Light emitting diode, 5...
...DC power supply, 6...Load.
Claims (1)
がベースに接続され、上記直流電源からの直流電源電圧
が所定値以上であるときに導通し所定値以下になると遮
断するトランジスタと、このトランジスタの遮断により
直流電圧が印加されて動作する非安定マルチバイブレー
クと、この非安定マルチパイプレークの出力端に接続さ
れた発光素子とを備え、直流電源電圧の低下時に非安定A transistor, the other end of which is connected to the base of a Zener diode to which a DC power supply is applied, conducts when the DC power supply voltage from the DC power supply is above a predetermined value and shuts off when the DC power supply voltage is below a predetermined value; Equipped with an unstable multi-bye break that operates when DC voltage is applied when cut off, and a light emitting element connected to the output end of this unstable multi-pipe break, it becomes unstable when the DC power supply voltage drops.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24016983A JPS60132216A (en) | 1983-12-20 | 1983-12-20 | Dc power source display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24016983A JPS60132216A (en) | 1983-12-20 | 1983-12-20 | Dc power source display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60132216A true JPS60132216A (en) | 1985-07-15 |
Family
ID=17055510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24016983A Pending JPS60132216A (en) | 1983-12-20 | 1983-12-20 | Dc power source display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60132216A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0214192U (en) * | 1988-07-13 | 1990-01-29 |
-
1983
- 1983-12-20 JP JP24016983A patent/JPS60132216A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0214192U (en) * | 1988-07-13 | 1990-01-29 |
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