JPS59172937A - Charge current detecting circuit of charger - Google Patents
Charge current detecting circuit of chargerInfo
- Publication number
- JPS59172937A JPS59172937A JP58044113A JP4411383A JPS59172937A JP S59172937 A JPS59172937 A JP S59172937A JP 58044113 A JP58044113 A JP 58044113A JP 4411383 A JP4411383 A JP 4411383A JP S59172937 A JPS59172937 A JP S59172937A
- Authority
- JP
- Japan
- Prior art keywords
- charger
- display element
- transistor
- charging
- current
- 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
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
【発明の詳細な説明】
〔発明の利用分野〕
本発明は蓄電器に充電器を用いて充電する裂従来例とし
て、狗性抵抗素子（製品名ラムダダイオード）を用いた
バッテリチェッカというものがある。これは主に乾電池
内蔵の製品において、乾電池の消耗状態ケ警告するもの
であへ本発明は充電装置に用いて有用な、上記の応用で
ある。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention uses a battery charger to charge a condenser.As a conventional example, there is a battery checker using a long resistance element (product name: lambda diode). This is mainly for use in products with a built-in dry cell battery to warn of the depleted state of the dry cell battery, and the present invention is useful for use in a charging device as described above.
本発明の目的は蓄電器に安全に充電することができる充
電回路を提供することにある。An object of the present invention is to provide a charging circuit that can safely charge a capacitor.
従来蓄電器に充電を安全にする回路としては、回路構成
が複雑になる欠点があった。本発明は負性抵抗素子欠用
いｔ’Ｌば簡単な回路構成でほぼ完全な充電装置が構成
できることに着目したものである。Conventional circuits for safely charging capacitors have had the disadvantage of complex circuit configurations. The present invention focuses on the fact that an almost complete charging device can be constructed with a simple circuit configuration without using a negative resistance element.
第１図は従来の回路例であるバッテリチェッ力である。 FIG. 1 shows a battery checker which is an example of a conventional circuit.
負性抵抗素子１は第２図に示す特性を示す素子であり、
アノードカソード間電圧ＶＡＫがＶＶ以上即ちＶＡＫ
：） Ｖｖ で電流遮断になる。The negative resistance element 1 is an element exhibiting the characteristics shown in FIG.
Anode-cathode voltage VAK is more than VV, that is, VAK
:) Current is cut off at Vv.
従ってバッテリ電圧が高く正常なときは、１で示す負性
抵抗素子に電流は流れず、従ってトランジスタ２はオフ
で３で示すＬＥＤは消灯している。バッテリ４が消耗し
である電圧以下になると、負性抵抗素子１に電流が流れ
ＬＥＤ３は点灯する。ＬＥＤ３が消灯→点灯になるバッ
チトランジスタのペースエミッタ間電圧。Therefore, when the battery voltage is high and normal, no current flows through the negative resistance element 1, so the transistor 2 is off and the LED 3 is off. When the battery 4 is exhausted and the voltage drops below a certain level, current flows through the negative resistance element 1 and the LED 3 lights up. The voltage between the pace emitter of the batch transistor that turns LED3 from off to on.
第３図は本発明の実施例を示すものである。FIG. 3 shows an embodiment of the invention.
第１の電源（充電器に相当）９から第２の電源１０（蓄
電器に相当）に充電する場合を示している。第３図の接
続状態において、当初リレー７はオフであるから抵抗用
。の両端の電位差ＶＢはゼロである。この状態でトラン
ジスタ６はオンであるのでリレー７はオンとなり第１の
電源から第２の電源に充電が開始される。このとき１で
示す負性抵抗素子はオフであることよりトランジスタ２
はオフ。従ってトランジスタ５は鳥。A case is shown in which a first power source (corresponding to a charger) 9 charges a second power source 10 (corresponding to a capacitor). In the connection state shown in Figure 3, relay 7 is initially off, so it is used for resistance. The potential difference VB between both ends of is zero. In this state, transistor 6 is on, so relay 7 is on, and charging from the first power source to the second power source is started. At this time, since the negative resistance element indicated by 1 is off, the transistor 2
is off. Therefore, transistor 5 is a bird.
鳥なる抵抗ケ通してベースバイアス電流が供給されオン
即ちＬＥＤ４は点灯、ＬＥＤ３は消灯状態である。充電
が進み抵抗へ。の両端の電位差が少な（なると負性抵抗
素子１に電流が流れ、ＬＥＤ３は点灯、Ｌ Ｅ Ｄ ４
は消灯する。同時にトランジスタ５はオフであることか
らトランジスタ６のベースには抵抗賜、ＬＥＤ４．及び
鳥により逆バイアス状態となりオフとなりリレー７はオ
フとなり第１の電池より第２の電池への充電経過が遮断
されろ。A base bias current is supplied through the bird resistor and the LED 4 is turned on, that is, the LED 3 is turned off. Charging progresses to the resistance. When the potential difference between both ends of is small (current flows through negative resistance element 1, LED 3 lights up, L E D 4
goes out. At the same time, since transistor 5 is off, a resistor is placed at the base of transistor 6, and LED 4. The relay 7 is turned off and the charging process from the first battery to the second battery is cut off.
本発明によれば比較的簡単な回路構成でバッテリーチャ
ージャーの充電状態の表示及び過充電回路防止回路を提
供できる。即ち新しい機能としての素子回路、安全袋■
−としての過充電防止回路を提供できる。According to the present invention, it is possible to provide a display of the charging state of a battery charger and an overcharging circuit prevention circuit with a relatively simple circuit configuration. In other words, element circuits and safety bags as new functions■
- An overcharge prevention circuit can be provided.
第１図は従来のバッテリーチェッカ回路図、第２図は負
性抵抗素子の特性線図、第３図は本、 ３ 。
発明の一実施例の回路図である。
１・・・負性抵抗素子、２・・・トランジスタ、３，４
・・・ＬＥＤ、５．６・・・トランジスタ、７・・・リ
レー、９・・・電源、１０・・・蓄電器。
・ ４ ・
弔 １ 図
第２叫Figure 1 is a conventional battery checker circuit diagram, Figure 2 is a characteristic diagram of a negative resistance element, and Figure 3 is a book. FIG. 2 is a circuit diagram of an embodiment of the invention. 1... Negative resistance element, 2... Transistor, 3, 4
...LED, 5.6...transistor, 7...relay, 9...power supply, 10...condenser.・ 4 ・ Condolence 1 Figure 2nd scream
Claims (1)
に電流検出用の抵抗を挿入し、該抵抗の両端の電位差を
用いて、負性抵抗素子のバイアス電圧として用いさらに
、該負性抵抗素子を流れる電流により表示素子を駆動す
るトランジスタのペースバイアス電流とし、第１の表示
素子は、充電状態では消灯とし、さらに第１の表示素子
ン駆動しているトランジスタのコレクタ側の負荷抵抗よ
り第２の表示素子を駆動するためのトランジスタのベー
スバイアス電流ヲ得ることにより、第２の表示素子は充
電状態では点灯とし、さらに第２の表示素子の駆動電流
を用いて回路！遮断し充電器と蓄電器の充電経路を回路
的に切り離すことケ特徴とする充電器の充電電流検出回
路。In order to clearly indicate the charging state of the capacitor, a resistor for current detection is inserted between the charger and the capacitor, and the potential difference between both ends of the resistor is used as a bias voltage for the negative resistance element. The current flowing through the element is used as a pace bias current of the transistor that drives the display element, and the first display element is turned off in the charged state. By obtaining the base bias current of the transistor for driving the second display element, the second display element is turned on in a charged state, and furthermore, the drive current of the second display element is used to create a circuit! A charging current detection circuit for a charger is characterized in that it cuts off and circuitly separates the charging path between the charger and the condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58044113A JPS59172937A (en) | 1983-03-18 | 1983-03-18 | Charge current detecting circuit of charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58044113A JPS59172937A (en) | 1983-03-18 | 1983-03-18 | Charge current detecting circuit of charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59172937A true JPS59172937A (en) | 1984-09-29 |
Family
ID=12682546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58044113A Pending JPS59172937A (en) | 1983-03-18 | 1983-03-18 | Charge current detecting circuit of charger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59172937A (en) |
-
1983
- 1983-03-18 JP JP58044113A patent/JPS59172937A/en active Pending
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