JPS6162589U - - Google Patents
Info
- Publication number
- JPS6162589U JPS6162589U JP14592084U JP14592084U JPS6162589U JP S6162589 U JPS6162589 U JP S6162589U JP 14592084 U JP14592084 U JP 14592084U JP 14592084 U JP14592084 U JP 14592084U JP S6162589 U JPS6162589 U JP S6162589U
- Authority
- JP
- Japan
- Prior art keywords
- converter
- voltage
- display tube
- fluorescent display
- logic 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
- 238000004804 winding Methods 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009730 filament winding Methods 0.000 description 1
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図は本考案に係るＤＣ・ＤＣコンバータ回
路の一実施例を示す構成図である。
１…ＤＣ・ＤＣコンバータ用電源、２…抵抗、
３…トランジスタ、４…コンデンサ、５…抵抗、
６…ツエナーダイオード、７…トランス、８…ダ
イオード、９…ツエナーダイオード、１０…抵抗
、１１…ダイオード、１２，１３…フイラメント
巻線、１４…螢光表示管用の負の電圧の出力線、
１５…トランス７のフイードバツク巻線、１６…
螢光表示管、１７…フイラメント、１８…アノー
ド、１９…ドライブ回路、２０…抵抗、２１…ド
ライブ用トランジスタ、２２…ロジツク用電源、
２３…出力電圧用２次巻線。
FIG. 1 is a block diagram showing an embodiment of a DC/DC converter circuit according to the present invention. 1...Power supply for DC/DC converter, 2...Resistor,
3...Transistor, 4...Capacitor, 5...Resistor,
6... Zener diode, 7... Transformer, 8... Diode, 9... Zener diode, 10... Resistor, 11... Diode, 12, 13... Filament winding, 14... Negative voltage output line for fluorescent display tube.
15... Feedback winding of transformer 7, 16...
Fluorescent display tube, 17... filament, 18... anode, 19... drive circuit, 20... resistor, 21... drive transistor, 22... logic power supply,
23... Secondary winding for output voltage.
Claims (1)
メント電圧と駆動用の負の電圧を発生し、ロジツ
ク回路用の正の電圧と前記ＤＣ・ＤＣコンバータ
からの負の電圧間でドライブする螢光表示管の駆
動回路において、ロジツク回路用の正の電圧が前
記ＤＣ・ＤＣコンバータの２次側巻線に逆流しな
いようにダイオードを付加したことを特徴とする
ＤＣ・ＤＣコンバータ回路。 A DC/DC converter generates a filament voltage for the fluorescent display tube and a negative voltage for driving, and the fluorescent display tube is driven between the positive voltage for the logic circuit and the negative voltage from the DC/DC converter. A DC/DC converter circuit characterized in that a diode is added to the drive circuit to prevent a positive voltage for the logic circuit from flowing back into the secondary winding of the DC/DC converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14592084U JPS6162589U (en) | 1984-09-28 | 1984-09-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14592084U JPS6162589U (en) | 1984-09-28 | 1984-09-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6162589U true JPS6162589U (en) | 1986-04-26 |
Family
ID=30704169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14592084U Pending JPS6162589U (en) | 1984-09-28 | 1984-09-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6162589U (en) |
-
1984
- 1984-09-28 JP JP14592084U patent/JPS6162589U/ja active Pending
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