JPH01173684U - - Google Patents
Info
- Publication number
- JPH01173684U JPH01173684U JP7030988U JP7030988U JPH01173684U JP H01173684 U JPH01173684 U JP H01173684U JP 7030988 U JP7030988 U JP 7030988U JP 7030988 U JP7030988 U JP 7030988U JP H01173684 U JPH01173684 U JP H01173684U
- Authority
- JP
- Japan
- Prior art keywords
- detection section
- detects
- analog multiplier
- voltage
- current detection
- 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 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 1
Landscapes
- Electroluminescent Light Sources (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図ａは印加電圧としての正弦波信号を示す図、第
２図ｂは同図ａの印加電圧を与えた場合にＥＬ素
子に流れる電流の波形図、第３図はＥＬ素子の従
来の消費電力測定回路であるＳａｗｙｅｒ‐Ｔｏ
ｗｅｒの回路、第４図は第３図のオシロスコープ
２０２における表示図形を示す図である。
１０１……ＥＬ素子、１０２……電源部として
の交流電源、１０５……電流検出部としての微小
抵抗器、１０６……アナログ乗算器、１０７……
フイルタとしてのローパスフイルタ、１０８……
指示部としてのメータ、１０９……電圧検出部と
しての分圧回路。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
Figure a is a diagram showing a sine wave signal as an applied voltage, Figure 2 b is a waveform diagram of the current flowing through the EL element when the applied voltage shown in figure a is applied, and Figure 3 is the conventional power consumption of the EL element. The measurement circuit Sawyer-To
FIG. 4 is a diagram showing a display figure on the oscilloscope 202 of FIG. 3. 101... EL element, 102... AC power supply as a power supply section, 105... Micro resistor as a current detection section, 106... Analog multiplier, 107...
Low pass filter as a filter, 108...
Meter as an indicator, 109 . . . a voltage divider circuit as a voltage detector.
Claims (1)
素子の駆動電圧を検出する電圧検出部と、前記Ｅ
Ｌ素子に流れる電流を検出する電流検出部と、前
記電圧検出部と前記電流検出部からの信号を乗算
するアナログ乗算器と、前記アナログ乗算器の出
力信号を平均化するフイルタと、前記フイルタの
出力信号によつて駆動される指示部とを備えて成
るＥＬ素子の消費電力測定装置。 a power supply unit for driving the EL element, and the EL element;
a voltage detection section that detects the drive voltage of the element;
a current detection section that detects the current flowing through the L element; an analog multiplier that multiplies the signals from the voltage detection section and the current detection section; a filter that averages the output signals of the analog multiplier; 1. A power consumption measuring device for an EL element, comprising an instruction section driven by an output signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7030988U JPH01173684U (en) | 1988-05-30 | 1988-05-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7030988U JPH01173684U (en) | 1988-05-30 | 1988-05-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01173684U true JPH01173684U (en) | 1989-12-08 |
Family
ID=31295560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7030988U Pending JPH01173684U (en) | 1988-05-30 | 1988-05-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01173684U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS569061A (en) * | 1979-06-30 | 1981-01-29 | Sansha Electric Mfg Co Ltd | Direct current arc welding machine |
| JPS62287167A (en) * | 1986-06-05 | 1987-12-14 | Towa Denki Kk | Ac wattmeter |
-
1988
- 1988-05-30 JP JP7030988U patent/JPH01173684U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS569061A (en) * | 1979-06-30 | 1981-01-29 | Sansha Electric Mfg Co Ltd | Direct current arc welding machine |
| JPS62287167A (en) * | 1986-06-05 | 1987-12-14 | Towa Denki Kk | Ac wattmeter |
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