JPS585086U

JPS585086U - Display circuit of mode switching device

Info

Publication number: JPS585086U
Application number: JP9818081U
Authority: JP
Inventors: 充足立
Original assignee: シャープ株式会社
Priority date: 1981-06-30
Filing date: 1981-06-30
Publication date: 1983-01-13

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

[Brief explanation of drawings]

第１図は従来のモード切換装置における表示回路の要部
を示す回路図である。第２図はこの考案の一実施例の原
理を説明するための回路図である。第３図はこの考案の一実施例の具体的な電気回路図であ
る。図において、３ないし５は発光ダイオード、６゜８は切
換えスイッチ、１０はマルチプレックス回路、１２は定
電流電源、１３はツェナーダイオード、１６，１８．２
０はトランジスタを示す。FIG. 1 is a circuit diagram showing the main parts of a display circuit in a conventional mode switching device. FIG. 2 is a circuit diagram for explaining the principle of an embodiment of this invention. FIG. 3 is a specific electrical circuit diagram of one embodiment of this invention. In the figure, 3 to 5 are light emitting diodes, 6°8 is a changeover switch, 10 is a multiplex circuit, 12 is a constant current power supply, 13 is a Zener diode, 16, 18.2
0 indicates a transistor.

Claims

[Claims for Utility Model Registration] A first mode switching means for switching between a first mode and a second mode; and in response to being switched to the second mode by the first mode switching means. a first mode selection means capable of selecting a third mode; and a fourth mode capable of being selected in response to being switched to the second mode by the first mode switching means. and a second mode selection means for prohibiting selection of the first mode selection means, the display circuit for displaying each of the selected modes, the display circuit comprising: a constant current power supply; a constant current power source and the first mode switching means;
a first indicator connected between the mode switching side of the device and turned on in response to switching to the first mode, each connected in series to the constant current power source, and connected to the first mode switching means The second mode is switched to the second mode by the controller and the third mode is selected by the first mode selection means. second and third indicators each displaying a mode of and the fourth mode is selected by the second mode selection means, the current is supplied from the constant current power supply through the first indicator and the Zener diode. A display circuit for a mode switching device, comprising a fourth indicator that lights up and displays the fourth mode.