JPH03116770U - - Google Patents
Info
- Publication number
- JPH03116770U JPH03116770U JP2489990U JP2489990U JPH03116770U JP H03116770 U JPH03116770 U JP H03116770U JP 2489990 U JP2489990 U JP 2489990U JP 2489990 U JP2489990 U JP 2489990U JP H03116770 U JPH03116770 U JP H03116770U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- circuit device
- supply voltage
- detection resistor
- ignition circuit
- 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 description 5
- 230000007423 decrease Effects 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Ignition Installations For Internal Combustion Engines (AREA)
Description
第１図は本考案の一実施例の構成を示す回路図
、第２図は同上実施例のコレクタ電流（点火１次
電流）特性を従来と比較して示した線図、第３図
は従来例の構成を示す回路図である。
１……点火コイルの１次側、２……パワートラ
ンジスタ、３……電流検出用抵抗、６……電流制
限用トランジスタ、１２……ツエナーダイオード
、１３，１４……抵抗、１５……コンパレータ、
１６……リレー。
Fig. 1 is a circuit diagram showing the configuration of an embodiment of the present invention, Fig. 2 is a diagram showing the collector current (primary ignition current) characteristics of the same embodiment compared to the conventional one, and Fig. 3 is the conventional one. FIG. 2 is a circuit diagram showing an example configuration. DESCRIPTION OF SYMBOLS 1... Primary side of ignition coil, 2... Power transistor, 3... Current detection resistor, 6... Current limiting transistor, 12... Zener diode, 13, 14... Resistor, 15... Comparator,
16...Relay.
Claims (1)
流検出用抵抗とを電源に直列に接続し、電流検出
用抵抗の端子電圧の増大に応じてパワートランジ
スタのベース電流を減少補正することによつてパ
ワートランジスタのコレクタ電流の増大を制限す
るようにした点火回路装置において、電源電圧の
低下を検出する電源電圧検出手段と、電源電圧の
低下時前記電流検出用抵抗を短絡させるスイツチ
手段とを設けて構成したことを特徴とする点火回
路装置。 By connecting the primary side of the ignition coil, the power transistor, and the current detection resistor in series with a power supply, and correcting the base current of the power transistor to decrease in accordance with the increase in the terminal voltage of the current detection resistor, the power transistor is The ignition circuit device is configured to limit an increase in the collector current of the ignition circuit device, which includes a power supply voltage detection means for detecting a decrease in the power supply voltage, and a switch means for short-circuiting the current detection resistor when the power supply voltage decreases. An ignition circuit device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2489990U JPH03116770U (en) | 1990-03-14 | 1990-03-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2489990U JPH03116770U (en) | 1990-03-14 | 1990-03-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03116770U true JPH03116770U (en) | 1991-12-03 |
Family
ID=31527845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2489990U Pending JPH03116770U (en) | 1990-03-14 | 1990-03-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03116770U (en) |
-
1990
- 1990-03-14 JP JP2489990U patent/JPH03116770U/ja active Pending
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