JPH01116591U - - Google Patents
Info
- Publication number
- JPH01116591U JPH01116591U JP1988009631U JP963188U JPH01116591U JP H01116591 U JPH01116591 U JP H01116591U JP 1988009631 U JP1988009631 U JP 1988009631U JP 963188 U JP963188 U JP 963188U JP H01116591 U JPH01116591 U JP H01116591U
- Authority
- JP
- Japan
- Prior art keywords
- lighting device
- transistor
- base
- transformer
- 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.)
- Pending
Links
- 238000004804 winding Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Description
第１図はこの考案の一実施例を示す回路図、第
２図はこの考案の他の実施例を示す回路図、第３
図は従来の点灯装置の回路図である。
１……直流電源、２……ＥＬ素子（負荷）、Ｔ
１……発振用昇圧トランス、Ｐ……一次側巻線、
Ｓ……二次側巻線、Ｑ１……スイツチング用トラ
ンジスタ、Ｒ１……起動用抵抗、Ｒ２……電流制
御用抵抗、Ｒ３，Ｒ４……抵抗、ＺＤ……定電圧
ダイオード、Ｄ１〜Ｄ３……ダイオード、Ｄ４…
…定電流ダイオード、Ｃ１……コンデンサ。
Figure 1 is a circuit diagram showing one embodiment of this invention, Figure 2 is a circuit diagram showing another embodiment of this invention, and Figure 3 is a circuit diagram showing another embodiment of this invention.
The figure is a circuit diagram of a conventional lighting device. 1...DC power supply, 2...EL element (load), T
1 ...Oscillation step-up transformer, P...Primary winding,
S...Secondary winding, Q1 ...Switching transistor, R1...Starting resistor, R2 ...Current control resistor, R3 , R4 ...Resistor, ZD ... Constant voltage diode, D1 to D3 ...Diode, D4 ...
... Constant current diode, C 1 ... Capacitor.
Claims (1)
スイツチング用トランジスタを直列接続すると共
に、該トランジスタのベースを前記トランスの二
次側巻線に接続し、該トランスの二次側巻線から
負荷に駆動電圧を供給するようにした点灯装置に
おいて、前記トランジスタと直流電源との間に電
流制限用抵抗を接続し、且つ該トランジスタのベ
ースと直流電源との間にダイオードを順方向に接
続したことを特徴とする点灯装置。 (2) スイツチング用トランジスタは、ベースが
起動用抵抗を介して、直流電源に直列接続された
抵抗と定電圧ダイオードの接続点に接続されてい
ることを特徴とする請求項１記載の点灯装置。 (3) スイツチング用トランジスタは、ベースが
定電流ダイオードを介して直流電源に接続されて
いることを特徴とする請求項１記載の点灯装置。[Claims for Utility Model Registration] (1) Connecting the primary winding of an oscillating transformer and a switching transistor in series to a DC power supply, and connecting the base of the transistor to the secondary winding of the transformer, In a lighting device in which a driving voltage is supplied to a load from a secondary winding of a transformer, a current limiting resistor is connected between the transistor and a DC power source, and a current limiting resistor is connected between the base of the transistor and the DC power source. A lighting device characterized by having a diode connected in the forward direction. (2) The lighting device according to claim 1, wherein the base of the switching transistor is connected via a starting resistor to a connection point between a resistor connected in series with a DC power supply and a constant voltage diode. (3) The lighting device according to claim 1, wherein the switching transistor has a base connected to a DC power source via a constant current diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988009631U JPH01116591U (en) | 1988-01-29 | 1988-01-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988009631U JPH01116591U (en) | 1988-01-29 | 1988-01-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01116591U true JPH01116591U (en) | 1989-08-07 |
Family
ID=31216541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988009631U Pending JPH01116591U (en) | 1988-01-29 | 1988-01-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01116591U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS48102230A (en) * | 1972-04-10 | 1973-12-22 | ||
| JPS5937889A (en) * | 1982-08-25 | 1984-03-01 | Fanuc Ltd | Self-excited inverter |
-
1988
- 1988-01-29 JP JP1988009631U patent/JPH01116591U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS48102230A (en) * | 1972-04-10 | 1973-12-22 | ||
| JPS5937889A (en) * | 1982-08-25 | 1984-03-01 | Fanuc Ltd | Self-excited inverter |
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