JPS61185230U - - Google Patents
Info
- Publication number
- JPS61185230U JPS61185230U JP6849385U JP6849385U JPS61185230U JP S61185230 U JPS61185230 U JP S61185230U JP 6849385 U JP6849385 U JP 6849385U JP 6849385 U JP6849385 U JP 6849385U JP S61185230 U JPS61185230 U JP S61185230U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- oscillation
- output terminal
- gate
- 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
- 230000010355 oscillation Effects 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
Description
第１図および第２図は本考案の第１実施例の点
灯回路に係り、第１図は回路図、第２図は動作説
明のための波形図、第３図は第２実施例の点灯回
路の回路図、第４図は従来例の回路図である。
１……発振回路、２……時定数調整抵抗（パル
ス幅可変手段）、３……スイツチング素子（トラ
ンジスタ）、４……灯器、５……ＡＮＤゲート、
６……短絡検出回路、７……発振停止回路（ワン
シヨツト回路）。
Figures 1 and 2 relate to the lighting circuit of the first embodiment of the present invention, where Figure 1 is a circuit diagram, Figure 2 is a waveform diagram for explaining operation, and Figure 3 is the lighting circuit of the second embodiment. A circuit diagram of the circuit, FIG. 4 is a circuit diagram of a conventional example. 1... Oscillation circuit, 2... Time constant adjustment resistor (pulse width variable means), 3... Switching element (transistor), 4... Lamp device, 5... AND gate,
6... Short circuit detection circuit, 7... Oscillation stop circuit (one shot circuit).
Claims (1)
素子と、発振出力により前記スイツチング素子を
オン・オフする発振回路と、前記灯器の短絡検出
回路と、前記短絡検出回路の検出動作に応答して
前記発振回路の発振を停止する発振停止回路とを
備えた点灯回路。 (2) 前記短絡検出回路が、前記灯器の負極端子
と前記スイツチング素子との接続点および前記発
振回路の出力端子を２入力端子とするＡＮＤゲー
トであり、前記発振停止回路が、その入力端子を
前記ＡＮＤゲートの出力端子に接続し、かつ、そ
の出力端子を前記発振回路のリセツト端子に接続
したワンシヨツト回路である実用新案登録請求の
範囲第(1)項記載の点灯回路。 (3) 前記発振回路がパルス幅可変手段を備えた
ものである実用新案登録請求の範囲第(1)項記載
の点灯回路。[Claims for Utility Model Registration] (1) A switching element inserted in a power supply circuit of a lamp, an oscillation circuit that turns on and off the switching element by oscillation output, a short-circuit detection circuit of the lamp, and An oscillation stop circuit that stops oscillation of the oscillation circuit in response to a detection operation of a short circuit detection circuit. (2) The short circuit detection circuit is an AND gate whose two input terminals are a connection point between the negative terminal of the lamp and the switching element and an output terminal of the oscillation circuit, and the oscillation stop circuit is an AND gate whose input terminal The lighting circuit according to claim 1, which is a one-shot circuit in which the output terminal of the AND gate is connected to the output terminal of the AND gate, and the output terminal is connected to the reset terminal of the oscillation circuit. (3) The lighting circuit according to claim (1), wherein the oscillation circuit includes a pulse width variable means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6849385U JPS61185230U (en) | 1985-05-09 | 1985-05-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6849385U JPS61185230U (en) | 1985-05-09 | 1985-05-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61185230U true JPS61185230U (en) | 1986-11-19 |
Family
ID=30603294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6849385U Pending JPS61185230U (en) | 1985-05-09 | 1985-05-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61185230U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5325800U (en) * | 1976-08-12 | 1978-03-04 |
-
1985
- 1985-05-09 JP JP6849385U patent/JPS61185230U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5325800U (en) * | 1976-08-12 | 1978-03-04 |
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