JPS58151854U

JPS58151854U - level display device

Info

Publication number: JPS58151854U
Application number: JP5016782U
Authority: JP
Inventors: 稔戸沢; 秀人宮崎
Original assignee: 三菱電機株式会社
Priority date: 1982-04-05
Filing date: 1982-04-05
Publication date: 1983-10-12

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、テープレコーダに用いられる従来のレベル表
示装置を示す電気回路図である。第２図は、この考案の
一実施例であるレベル表示装置を示す電気回路図である
。第３図は、第２図に示す実施例を発展させたレベル表
示装置を示す電気回路図である。図において、１〜７は発光ダイオード、８〜１４は定電
流源、１５〜２２は差動増幅器、３３゜４３．４４はツ
ェナダイオード、４１，４２゜５５．５６はＮＰＮ）ラ
ンジスタ、５７はＰＮＰ）ランジスタ、３４．４０は電
解コンデンサ、４５〜５１は２色発光ダイオード、２３
〜３２．３６〜３９．５２〜５４は抵抗、６０は基準電
圧発生切替回路、６１は発光色切替回路をそれぞれ示す
。FIG. 1 is an electrical circuit diagram showing a conventional level display device used in a tape recorder. FIG. 2 is an electrical circuit diagram showing a level display device which is an embodiment of this invention. FIG. 3 is an electrical circuit diagram showing a level display device that is a development of the embodiment shown in FIG. In the figure, 1 to 7 are light emitting diodes, 8 to 14 are constant current sources, 15 to 22 are differential amplifiers, 33°43.44 is a Zener diode, 41, 42°55.56 are NPN) transistors, and 57 is a PNP ) transistor, 34.40 is an electrolytic capacitor, 45 to 51 are two-color light emitting diodes, 23
-32.36-39.52-54 are resistors, 60 is a reference voltage generation switching circuit, and 61 is a luminescent color switching circuit, respectively.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

（１）信号のレベルに比例して、前記レベルを光学的に
表示する装置であって、予め定められる、少なくとも第１の基準電圧と第２の基
準電圧とを発生する手段と、前記信号の予め定めるレベ
ルを検出して、前記第１の基準電圧と前記第２の基準電
圧との切替を行なう手段と、前記切替手段により切替えられた前記第１の基準電圧ま
たは前記第２の基準電圧を、複数段階に分圧する手段と
、前記信号と前記分圧された各電圧とを逐一比較する手段
と、前記比較手段の比較結果に応答して、前記光学的表示を
行なう手段とを備えるレベル表示装置。(1) A device for optically displaying the level in proportion to the level of a signal, comprising means for generating at least a first reference voltage and a second reference voltage, which are predetermined; means for detecting a predetermined level and switching between the first reference voltage and the second reference voltage; and means for switching between the first reference voltage and the second reference voltage by the switching means. , means for voltage division into a plurality of stages, means for comparing the signal and each of the divided voltages point by point, and means for performing the optical display in response to the comparison result of the comparison means. Device.

（２）前記比較手段は、前記複数段階に対応して設けら
れ、かつ前記信号と前記複数段階に分圧された各電圧と
を比較して、前記信号の方が大きいときに前記光学的表
示手段を能動化する差動増幅器であり、前記光学的表示手段は、前記複数段階に対応して設けら
れ、かつ前記信号のレベルを直線的に表示するように直
線状に配置される複数個の発光素子である、実用新案登
録請求の範囲第１項記載のレベル表示装置。(2) The comparison means is provided corresponding to the plurality of stages, and compares the signal with each voltage divided into the plurality of stages, and when the signal is larger, the optical display is performed. The optical display means is a differential amplifier for activating a plurality of optical display means, and the optical display means includes a plurality of optical display means arranged in a straight line so as to linearly display the level of the signal. The level display device according to claim 1, which is a light emitting device.

（３）　　前記発光素子は、少なくとも２種類の発光色
を有する発光ダイオードであり、前記切替手段は、前記第１の基準電圧と前記第２の基準
電圧との切替と同時に、前記発光ダイオードの発光色を
切替、える手段をさらに備える、実用新案登録請求の範
囲第２項記載のレベル表示装置。(3) The light emitting element is a light emitting diode having at least two types of light emitting colors, and the switching means switches the light emitting diode from the light emitting diode at the same time as switching between the first reference voltage and the second reference voltage. The level display device according to claim 2, further comprising means for switching and changing colors.