JPS6185896U - - Google Patents
Info
- Publication number
- JPS6185896U JPS6185896U JP17116784U JP17116784U JPS6185896U JP S6185896 U JPS6185896 U JP S6185896U JP 17116784 U JP17116784 U JP 17116784U JP 17116784 U JP17116784 U JP 17116784U JP S6185896 U JPS6185896 U JP S6185896U
- Authority
- JP
- Japan
- Prior art keywords
- display
- utility
- circuit
- model registration
- variable resistance
- 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
- 230000000087 stabilizing effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Description
第１図は本考案による表示素子の輝度制御回路
の一実施例を示す電気回路図、第２図は本考案の
他の実施例を示す電気回路図、第３図は従来の回
路図である。
１…表示素子、２…抵抗、３…光導電素子（Ｃ
ｄＳ）、４ａ〜４ｎ…ＬＥＤ、５ａ〜５ｈ…７セ
グメントＬＥＤ、６…トランジスタ、７…抵抗、
８…ダイオード、９…安定化回路、１０…出力端
子、１１…基準電圧出力端子、１２…抵抗。
FIG. 1 is an electric circuit diagram showing one embodiment of a brightness control circuit for a display element according to the present invention, FIG. 2 is an electric circuit diagram showing another embodiment of the present invention, and FIG. 3 is a conventional circuit diagram. . 1... Display element, 2... Resistor, 3... Photoconductive element (C
dS), 4a to 4n...LED, 5a to 5h...7 segment LED, 6...Transistor, 7...Resistance,
8... Diode, 9... Stabilization circuit, 10... Output terminal, 11... Reference voltage output terminal, 12... Resistor.
Claims (1)
に並列に接続した表示回路において、前記表示回
路と直列に可変抵抗素子を結合し、この可変抵抗
素子の被制御端子に、周囲の明るさを検出する光
導電素子の抵抗の変化に対応して出力電圧を可変
する安定化回路を結合してなることを特徴とする
表示素子の輝度制御回路。 (2) 実用新案登録請求の範囲第１項記載におい
て、可変抵抗素子はＰＮＰ型トランジスタからな
る表示素子の輝度制御回路。 (3) 実用新案登録請求の範囲第１項または第２
項記載において、光導電素子はＣｄＳからなる表
示素子の輝度制御回路。 (4) 実用新案登録請求の範囲第１項記載におい
て、安定化回路と可変抵抗素子との間に温度補償
用ダイオードを介在してなる表示素子の輝度制御
回路。[Claims for Utility Model Registration] (1) In a display circuit in which a plurality of display elements are connected in parallel between a power supply and ground, a variable resistance element is coupled in series with the display circuit, and the variable resistance element is covered. A brightness control circuit for a display element, characterized in that a control terminal is coupled to a stabilizing circuit that varies an output voltage in response to changes in resistance of a photoconductive element that detects ambient brightness. (2) Claim 1 of the Utility Model Registration Claim: A brightness control circuit for a display element in which the variable resistance element is a PNP transistor. (3) Scope of claims for utility model registration, paragraph 1 or 2
In the description in section 1, the photoconductive element is a brightness control circuit for a display element made of CdS. (4) A brightness control circuit for a display element as set forth in claim 1 of the utility model registration claim, which comprises a temperature compensation diode interposed between a stabilizing circuit and a variable resistance element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17116784U JPS6185896U (en) | 1984-11-12 | 1984-11-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17116784U JPS6185896U (en) | 1984-11-12 | 1984-11-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6185896U true JPS6185896U (en) | 1986-06-05 |
Family
ID=30728862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17116784U Pending JPS6185896U (en) | 1984-11-12 | 1984-11-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6185896U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55124887A (en) * | 1979-03-20 | 1980-09-26 | Tokyo Electric Co Ltd | Display unit |
-
1984
- 1984-11-12 JP JP17116784U patent/JPS6185896U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55124887A (en) * | 1979-03-20 | 1980-09-26 | Tokyo Electric Co Ltd | Display unit |
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