JPH0481498U - - Google Patents
Info
- Publication number
- JPH0481498U JPH0481498U JP12594890U JP12594890U JPH0481498U JP H0481498 U JPH0481498 U JP H0481498U JP 12594890 U JP12594890 U JP 12594890U JP 12594890 U JP12594890 U JP 12594890U JP H0481498 U JPH0481498 U JP H0481498U
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- voltage
- capacitor
- gate
- discharge lamp
- 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
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Description
第１図は本考案一実施例の回路図、第２図は従
来例の回路図である。
Ｆは放電灯、ｆはフイラメント、ＰＴＣは正特
性サーミスタ、ＴＳはバイメタルスイツチ、ＳＣ
Ｒは逆阻止型３端子サイリスタ、Ｄ１はダイオー
ド、ＺＤはツエナーダイオード、Ｃ１，Ｃ２はコ
ンデンサ、Ｒ１〜Ｒ４は抵抗である。
FIG. 1 is a circuit diagram of an embodiment of the present invention, and FIG. 2 is a circuit diagram of a conventional example. F is a discharge lamp, f is a filament, PTC is a positive temperature coefficient thermistor, TS is a bimetal switch, SC
R is a reverse blocking type three-terminal thyristor, D1 is a diode, ZD is a Zener diode, C1 and C2 are capacitors, and R1 to R4 are resistors.
Claims (1)
の両フイラメントの他端間に、正特性サーミスタ
とバイメタルスイツチと逆阻止型３端子サイリス
タとダイオードとの直列回路を接続し、両フイラ
メントの他端間の電圧を抵抗にて分圧した分圧電
圧を、第１のコンデンサと、点灯検出用ツエナー
ダイオードおよび第２のコンデンサの直列回路と
、放電抵抗との並列回路を介してゲートーカソー
ド間に抵抗が接続された逆阻止型３端子サイリス
タのゲートに印加したことを特徴とする放電灯始
動装置。 A series circuit consisting of a positive temperature coefficient thermistor, a bimetal switch, a reverse blocking type 3-terminal thyristor, and a diode is connected between the other ends of both filaments of a discharge lamp, one end of which is connected to the power supply via a ballast. A divided voltage obtained by dividing the voltage between the terminals using a resistor is applied between the gate and the cathode through a series circuit of the first capacitor, a lighting detection Zener diode and a second capacitor, and a parallel circuit with a discharge resistor. A discharge lamp starting device characterized in that a voltage is applied to the gate of a reverse blocking type three-terminal thyristor to which a resistor is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12594890U JPH0481498U (en) | 1990-11-27 | 1990-11-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12594890U JPH0481498U (en) | 1990-11-27 | 1990-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0481498U true JPH0481498U (en) | 1992-07-15 |
Family
ID=31873528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12594890U Pending JPH0481498U (en) | 1990-11-27 | 1990-11-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0481498U (en) |
-
1990
- 1990-11-27 JP JP12594890U patent/JPH0481498U/ja active Pending
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