JPS63155656U - - Google Patents
Info
- Publication number
- JPS63155656U JPS63155656U JP1987047004U JP4700487U JPS63155656U JP S63155656 U JPS63155656 U JP S63155656U JP 1987047004 U JP1987047004 U JP 1987047004U JP 4700487 U JP4700487 U JP 4700487U JP S63155656 U JPS63155656 U JP S63155656U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- led
- led lighting
- current limiting
- current
- 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 4
- 238000007599 discharging Methods 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Description
第１図は本考案の一実施例に係るＬＥＤ点灯回
路の回路図である。
１：発振回路、２：コンデンサ、３：ブリツジ
整流回路、４：ＬＥＤ、５：抵抗、Ｖｃｃ：直流
電源。
FIG. 1 is a circuit diagram of an LED lighting circuit according to an embodiment of the present invention. 1: Oscillation circuit, 2: Capacitor, 3: Bridge rectifier circuit, 4: LED, 5: Resistor, Vcc: DC power supply.
Claims (1)
と、 このスイツチング回路の出力端に接続されたコ
ンデンサと、 このコンデンサの充放電電流を整流する整流回
路と、 この整流回路の整流出力により駆動点灯される
ＬＥＤと、 このＬＥＤに流れる電流の尖頭値を規制する電
流制限回路と、 を具備し、上記ＬＥＤの点灯電流を上記コンデン
サにより規制することを特徴とするＬＥＤ点灯回
路。 ２ 前記電流制限回路が、前記ＬＥＤに直列に接
続された抵抗である実用新案登録請求の範囲第１
項記載のＬＥＤ点灯回路。 ３ 前記電流制限回路が、前記スイツチ回路の出
力端に直列に接続された抵抗である実用新案登録
請求の範囲第１項記載のＬＥＤ点灯回路。 ４ 前記スイツチング回路が、前記電流制限回路
として動作する負荷短絡保護回路付きの演算増幅
器を用いたものである実用新案登録請求の範囲第
１項記載のＬＥＤ点灯回路。 ５ 前記整流回路が、全波整流回路である実用新
案登録請求の範囲の第１〜４項のいずれか１つに
記載のＬＥＤ点灯回路。[Scope of Claim for Utility Model Registration] 1. A switching circuit that turns on and off a DC voltage, a capacitor connected to the output end of this switching circuit, a rectifier circuit that rectifies the charging and discharging current of this capacitor, and An LED lighting circuit comprising: an LED that is driven and lit by a rectified output; and a current limiting circuit that regulates the peak value of a current flowing through the LED, and wherein the lighting current of the LED is regulated by the capacitor. . 2 Utility model registration claim 1, wherein the current limiting circuit is a resistor connected in series with the LED
LED lighting circuit described in section. 3. The LED lighting circuit according to claim 1, wherein the current limiting circuit is a resistor connected in series to the output terminal of the switch circuit. 4. The LED lighting circuit according to claim 1, wherein the switching circuit uses an operational amplifier with a load short-circuit protection circuit that operates as the current limiting circuit. 5. The LED lighting circuit according to any one of claims 1 to 4, wherein the rectifier circuit is a full-wave rectifier circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987047004U JPS63155656U (en) | 1987-03-31 | 1987-03-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987047004U JPS63155656U (en) | 1987-03-31 | 1987-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63155656U true JPS63155656U (en) | 1988-10-12 |
Family
ID=30867193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987047004U Pending JPS63155656U (en) | 1987-03-31 | 1987-03-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63155656U (en) |
-
1987
- 1987-03-31 JP JP1987047004U patent/JPS63155656U/ja active Pending