JPH0181461U - - Google Patents
Info
- Publication number
- JPH0181461U JPH0181461U JP1987176468U JP17646887U JPH0181461U JP H0181461 U JPH0181461 U JP H0181461U JP 1987176468 U JP1987176468 U JP 1987176468U JP 17646887 U JP17646887 U JP 17646887U JP H0181461 U JPH0181461 U JP H0181461U
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- switching element
- discharge
- control input
- diode
- 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.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 5
- 238000013459 approach Methods 0.000 claims 1
- 230000007423 decrease Effects 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Ignition Installations For Internal Combustion Engines (AREA)
- Generation Of Surge Voltage And Current (AREA)
Description
添付の図面は本考案の放電点火装置の望ましい
一実施例における概略構成図である。
図中、１は交流電源、２１，２２は電流制限抵
抗、３はダイオード・ブリツジ、４はダイオード
、５は放電エネルギ蓄積用のコンデンサ、６は点
火トランス、６１は点火トランス一次巻線、６２
は点火トランス二次巻線、７は放電間隙、８は第
一半導体スイツチング素子として例示されたサイ
リスタ、９，１０，１１，１２は抵抗、１３は第
二スイツチング素子として例示されたｎｐｎトラ
ンジスタ、である。
The accompanying drawing is a schematic diagram of a preferred embodiment of the discharge ignition device of the present invention. In the figure, 1 is an AC power supply, 21 and 22 are current limiting resistors, 3 is a diode bridge, 4 is a diode, 5 is a capacitor for storing discharge energy, 6 is an ignition transformer, 61 is an ignition transformer primary winding, 62
is an ignition transformer secondary winding, 7 is a discharge gap, 8 is a thyristor exemplified as a first semiconductor switching element, 9, 10, 11, 12 are resistors, and 13 is an npn transistor exemplified as a second switching element. be.
Claims (1)
ス一次巻線との直列回路に制御入力付きの第一の
スイツチング素子を並列に接続し、該第一スイツ
チング素子の上記制御入力に制御電流を与えてこ
れを導通させたとき、上部コンデンサにあらかじ
め充電、蓄積させてある電荷を上記点火トランス
の一次巻線に放電し、該点火トランスの二次巻線
に接続された放電間隙に放電火花を得る放電点火
装置であつて； 商用交流電源を全波整流するダイオード・ブリ
ツジと、該ダイオード・ブリツジの正端子から上
記コンデンサを見て順方向に挿入されたダイオー
ドとから上記コンデンサの充電回路を構成すると
共に； 上記コンデンサを充電可能な最大電圧にまで充
電した後、ダイオードが逆方向バイアスとなりな
がら上記交流電源電圧が絶対値において低下して
行く過程において、当該交流電源電圧が零交差近
傍の所定値に至つた際にこれを検出し、上記第一
スイツチング素子の上記制御入力に上記コンデン
サの蓄積電荷の一部を上記制御電流として放電さ
せ、そのスイツチングを促す第二スイツチング素
子を設けたこと； を特徴とする放電点火装置。[Claims for Utility Model Registration] A first switching element with a control input is connected in parallel to a series circuit of a capacitor for storing discharge energy and a primary winding of an ignition transformer, and the above-mentioned control input of the first switching element is connected in parallel. When a control current is applied to make it conductive, the charge previously charged and stored in the upper capacitor is discharged to the primary winding of the ignition transformer, and is discharged into the discharge gap connected to the secondary winding of the ignition transformer. A discharge ignition device for obtaining a discharge spark; charging of the capacitor from a diode bridge that full-wave rectifies a commercial AC power source, and a diode inserted in the forward direction when looking at the capacitor from the positive terminal of the diode bridge. In addition to configuring the circuit; After charging the capacitor to the maximum chargeable voltage, in the process where the AC power supply voltage decreases in absolute value while the diode becomes reverse biased, the AC power supply voltage approaches zero crossing. A second switching element is provided which detects when a predetermined value has been reached and discharges a part of the accumulated charge of the capacitor as the control current to the control input of the first switching element to promote the switching. A discharge ignition device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17646887U JPH0419329Y2 (en) | 1987-11-20 | 1987-11-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17646887U JPH0419329Y2 (en) | 1987-11-20 | 1987-11-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0181461U true JPH0181461U (en) | 1989-05-31 |
| JPH0419329Y2 JPH0419329Y2 (en) | 1992-04-30 |
Family
ID=31468199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17646887U Expired JPH0419329Y2 (en) | 1987-11-20 | 1987-11-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0419329Y2 (en) |
-
1987
- 1987-11-20 JP JP17646887U patent/JPH0419329Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0419329Y2 (en) | 1992-04-30 |
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