JPH01172091U - - Google Patents
Info
- Publication number
- JPH01172091U JPH01172091U JP6468788U JP6468788U JPH01172091U JP H01172091 U JPH01172091 U JP H01172091U JP 6468788 U JP6468788 U JP 6468788U JP 6468788 U JP6468788 U JP 6468788U JP H01172091 U JPH01172091 U JP H01172091U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- polarity
- display tube
- current limiting
- collector
- 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
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Description
第１図はこの考案の第１の実施例の回路図、第
２図は上記実施例回路の主要点の電圧、電流変化
を示す波形図、第３図はこの考案の第２の実施例
の回路図、第４図はこの考案の第３の実施例の回
路図、第５図は従来回路の回路図である。
１１，２１，２６……ＮＰＮトランジスタ、１
２，１３，１７，１８，２２，２４，２７……抵
抗、１４，１９，２８……電流制限回路、１５…
…ＰＮＰトランジスタ、１６……高電圧直流電源
、２０……表示管、２３……インバータ、２５…
…スピードアツプ用のコンデンサ。
Fig. 1 is a circuit diagram of the first embodiment of this invention, Fig. 2 is a waveform diagram showing changes in voltage and current at the main points of the circuit of the above embodiment, and Fig. 3 is a circuit diagram of the second embodiment of this invention. FIG. 4 is a circuit diagram of a third embodiment of this invention, and FIG. 5 is a circuit diagram of a conventional circuit. 11, 21, 26...NPN transistor, 1
2, 13, 17, 18, 22, 24, 27...Resistor, 14, 19, 28...Current limiting circuit, 15...
... PNP transistor, 16 ... High voltage DC power supply, 20 ... Display tube, 23 ... Inverter, 25 ...
...Capacitor for speed up.
Claims (1)
信号が供給される第１の電流制限回路と、 上記第１の電流制限回路の出力に結合され、容
量性負荷を有する表示管を電圧源の電圧によつて
充電駆動する第２極性の第２トランジスタを備え
た第２の電流制限回路と、 上記第２トランジスタのコレクタにコレクタが
結合され、上記表示管を放電駆動する第１極性の
第３トランジスタと を具備したことを特徴とする表示管駆動回路。 (2) 第１極性の第１トランジスタを備え、入力
信号が供給される第１の電制限動回路と、 上記第１の電流制限回路の出力に結合され、容
量性負荷を有する表示管を電圧源の電圧によつて
充電駆動する第２極性の第２トランジスタを備え
た第２の電流制限回路と、 上記第２トランジスタのコレクタにコレクタが
結合された第１極性の第３トランジスタを備え、
上記表示管を放電駆動する第３の電流制限回路と
を具備したことを特徴とする表示管駆動回路。 (3) 前記第２トランジスタのベースと電圧源と
の間にはダイオードが接続されている請求項１又
は２に記載の表示管駆動回路。 (4) 前記第３のトランジスタのベース回路には
スピードアツプ用コンデンサが設けられている請
求項１，２又は３に記載の表示管駆動回路。[Claims for Utility Model Registration] (1) A first current limiting circuit comprising a first transistor of a first polarity and supplied with an input signal; a second current limiting circuit including a second transistor of a second polarity for charging and driving a display tube having a load with the voltage of a voltage source; a collector coupled to a collector of the second transistor; A display tube drive circuit comprising: a third transistor of a first polarity that is driven by discharge; (2) a first current limiting circuit that includes a first transistor of a first polarity and is supplied with an input signal; a second current limiting circuit including a second transistor of a second polarity that is charged and driven by the voltage of the source; and a third transistor of the first polarity whose collector is coupled to the collector of the second transistor;
A display tube drive circuit comprising: a third current limiting circuit for discharging driving the display tube. (3) The display tube drive circuit according to claim 1 or 2, wherein a diode is connected between the base of the second transistor and the voltage source. (4) The display tube drive circuit according to claim 1, 2 or 3, wherein a speed-up capacitor is provided in the base circuit of the third transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6468788U JPH01172091U (en) | 1988-05-17 | 1988-05-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6468788U JPH01172091U (en) | 1988-05-17 | 1988-05-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01172091U true JPH01172091U (en) | 1989-12-06 |
Family
ID=31290150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6468788U Pending JPH01172091U (en) | 1988-05-17 | 1988-05-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01172091U (en) |
-
1988
- 1988-05-17 JP JP6468788U patent/JPH01172091U/ja active Pending
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