JPH0278768U - - Google Patents
Info
- Publication number
- JPH0278768U JPH0278768U JP15853288U JP15853288U JPH0278768U JP H0278768 U JPH0278768 U JP H0278768U JP 15853288 U JP15853288 U JP 15853288U JP 15853288 U JP15853288 U JP 15853288U JP H0278768 U JPH0278768 U JP H0278768U
- Authority
- JP
- Japan
- Prior art keywords
- power transistor
- ignition coil
- transistor
- ignition
- base
- 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
Landscapes
- Ignition Installations For Internal Combustion Engines (AREA)
Description
第１図は、本考案の望ましい一実施例の概略構
成図、第２図は電気的特性の説明に用いる説明図
、第３図は従来の内燃機関用点火装置の代表的な
ものの概略構成図、第４図は当該従来例の点火装
置における温度特性の説明図、である。
図中、１０は車両搭載のバツテリ、１１は点火
コイル、１２はその一次巻線、１３はパワー・ト
ランジスタ、１４は点火コイル二次巻線、１５は
点火プラグ、１６は従来採用されていた制御トラ
ンジスタ、１７は従来の電流制限回路、２０は本
考案に従つて構成された電流制限回路、２１は本
考案において用いられる制御トランジスタ、Ｒ４
，Ｒ５は制御トランジスタのベース電位を与える
分圧回路構成用の抵抗、Ｒｓは必要に応じてパワ
ー・トランジスタに直列に挿入される電流制限抵
抗、θｉはパワー・トランジスタの駆動信号、Ｉ
ｃは点火コイル一次電流、ＶＢＥ１は制御トラン
ジスタのベース電圧、ＶＢＥ２はパワー・トラン
ジスタのベース電圧、である。
Fig. 1 is a schematic diagram of a preferred embodiment of the present invention, Fig. 2 is an explanatory diagram used to explain electrical characteristics, and Fig. 3 is a schematic diagram of a typical conventional ignition system for internal combustion engines. , FIG. 4 is an explanatory diagram of temperature characteristics in the conventional ignition device. In the figure, 10 is a battery mounted on the vehicle, 11 is an ignition coil, 12 is its primary winding, 13 is a power transistor, 14 is an ignition coil secondary winding, 15 is a spark plug, and 16 is a conventional control. transistor, 17 is a conventional current limiting circuit, 20 is a current limiting circuit configured according to the present invention, 21 is a control transistor used in the present invention, R 4
, R5 is a resistor for configuring a voltage divider circuit that provides the base potential of the control transistor, Rs is a current limiting resistor inserted in series with the power transistor as necessary, θi is the drive signal of the power transistor, I
c is the ignition coil primary current, VBE 1 is the base voltage of the control transistor, and VBE 2 is the base voltage of the power transistor.
Claims (1)
ル一次巻線とバイポーラ型パワー・トランジスタ
の直列回路を接続し、該パワー・トランジスタの
ベース入力に駆動信号を与えてこのパワー・トラ
ンジスタを選択的にオン・オフすることにより、
該オン状態からのターン・オフに基づいて上記点
火コイルの二次巻線に高圧を得る電流遮断型の内
燃機関用点火装置であつて； 上記パワー・トランジスタのベース入力に与え
られる上記駆動信号を選択的に分流し得るバイポ
ーラ型制御トランジスタと； 上記パワー・トランジスタのベース電位を分圧
し、上記制御トランジスタのベースに印加する分
圧回路と； から成る点火コイル一次電流制限回路を有する
ことを特徴とする内燃機関用点火装置。 (2) 上記パワー・トランジスタに直列に低抵抗
な電流制限抵抗を有すること； を特徴とする請求項１に記載の装置。[Scope of Claim for Utility Model Registration] (1) A series circuit of an ignition coil primary winding and a bipolar power transistor is connected to both ends of a battery installed in a vehicle, and a drive signal is applied to the base input of the power transistor. By selectively turning on and off this power transistor,
A current interrupt type ignition device for an internal combustion engine that obtains a high voltage in a secondary winding of the ignition coil based on turning off from the on state; An ignition coil primary current limiting circuit comprising: a bipolar control transistor that can selectively shunt; a voltage dividing circuit that divides the base potential of the power transistor and applies it to the base of the control transistor; Ignition system for internal combustion engines. 2. The device according to claim 1, further comprising: (2) a low resistance current limiting resistor in series with the power transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15853288U JPH0278768U (en) | 1988-12-07 | 1988-12-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15853288U JPH0278768U (en) | 1988-12-07 | 1988-12-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0278768U true JPH0278768U (en) | 1990-06-18 |
Family
ID=31438948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15853288U Pending JPH0278768U (en) | 1988-12-07 | 1988-12-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0278768U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS613966B2 (en) * | 1981-04-21 | 1986-02-06 | Yamato Kogyo Kk |
-
1988
- 1988-12-07 JP JP15853288U patent/JPH0278768U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS613966B2 (en) * | 1981-04-21 | 1986-02-06 | Yamato Kogyo Kk |
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