JPS6454299U - - Google Patents
Info
- Publication number
- JPS6454299U JPS6454299U JP14710287U JP14710287U JPS6454299U JP S6454299 U JPS6454299 U JP S6454299U JP 14710287 U JP14710287 U JP 14710287U JP 14710287 U JP14710287 U JP 14710287U JP S6454299 U JPS6454299 U JP S6454299U
- Authority
- JP
- Japan
- Prior art keywords
- output
- circuit
- outputs
- current detection
- reference voltage
- 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
- 238000001514 detection method Methods 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Description
第１図は本考案による螢光灯用インバータの一
実施例を示すブロツク図である。
１……螢光灯用インバータの入力端子、２……
直流電圧制御回路、３……スイツチング回路、４
……電流検出回路、５……螢光灯インバータの出
力端子、６……外部制御端子、７……ダイオード
、８……基準電圧発生器、９……誤差増幅器。
FIG. 1 is a block diagram showing an embodiment of an inverter for a fluorescent lamp according to the present invention. 1... Input terminal of fluorescent lamp inverter, 2...
DC voltage control circuit, 3... Switching circuit, 4
... Current detection circuit, 5 ... Fluorescent lamp inverter output terminal, 6 ... External control terminal, 7 ... Diode, 8 ... Reference voltage generator, 9 ... Error amplifier.
Claims (1)
光灯用インバータにおいて、制御信号によつて直
流入力電圧を増減させて出力する直流電圧制御回
路と、前記直流電圧制御回路の出力によつてスイ
ツチング動作をし、所定の交流出力を得るスイツ
チング回路と、前記スイツチング回路の交流出力
を直流に変換し、電流値を検出して対応の電圧を
出力する電流検出回路と、基準電圧発生器と、前
記電流検出回路出力と前記基準電圧発生器の基準
電圧を比較し、前記制御信号を出力する誤差増幅
器とを含み、前記交流出力を一定値に制御すると
ともに、前記電流検出回路出力が接続される誤差
増幅器の入力にダイオードを介して外部制御端子
を接続して、外部から前記交流出力の値を変える
ように構成したことを特徴とする螢光灯用インバ
ータ。 In a fluorescent lamp inverter in which the primary and secondary sides are insulated by a transformer, there is provided a DC voltage control circuit that increases or decreases the DC input voltage according to a control signal and outputs it, and an output of the DC voltage control circuit. a switching circuit that performs a switching operation and obtains a predetermined AC output; a current detection circuit that converts the AC output of the switching circuit into DC, detects a current value, and outputs a corresponding voltage; and a reference voltage generator; an error amplifier that compares the output of the current detection circuit with a reference voltage of the reference voltage generator and outputs the control signal, controls the AC output to a constant value, and is connected to the output of the current detection circuit; 1. An inverter for a fluorescent lamp, characterized in that an external control terminal is connected to an input of an error amplifier via a diode so that the value of the AC output can be changed externally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14710287U JPS6454299U (en) | 1987-09-25 | 1987-09-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14710287U JPS6454299U (en) | 1987-09-25 | 1987-09-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6454299U true JPS6454299U (en) | 1989-04-04 |
Family
ID=31417200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14710287U Pending JPS6454299U (en) | 1987-09-25 | 1987-09-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6454299U (en) |
-
1987
- 1987-09-25 JP JP14710287U patent/JPS6454299U/ja active Pending