JPS5942594U

JPS5942594U - Input signal level display circuit

Info

Publication number: JPS5942594U
Application number: JP13750582U
Authority: JP
Inventors: 梅本　順一
Original assignee: 三洋電機株式会社
Priority date: 1982-09-09
Filing date: 1982-09-09
Publication date: 1984-03-19

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 the drawing]

第１図は本考案による入力信号レベル表示回路図、第２
図は本考案の２色発光ダイオードの発光状態を説明する
図である。１・・・２色発光ダイオード、Ｇ・・・第１発光素子、
Ｒ・・・第２発光素子、３．　４．　６．　７・・・第
１、第２、第３、及び第４トランジスタ、Ｂ□・・・第
１バイアス回路、Ｂ２・・・第２バイアス回路、Ｂ３・
・・第３バイアス回路。Figure 1 is an input signal level display circuit diagram according to the present invention;
The figure is a diagram illustrating the light emitting state of the two-color light emitting diode of the present invention. 1... Two-color light emitting diode, G... First light emitting element,
R... second light emitting element, 3. 4. 6. 7... First, second, third, and fourth transistors, B□... First bias circuit, B2... Second bias circuit, B3...
...Third bias circuit.

Claims

[Scope of utility model registration request]

a two-color light-emitting diode having first and second light-emitting elements emitting different colors; first and second transistors connected in series with the first light-emitting element of the two-color light-emitting diode;
a third transistor connected in series with the light emitting diode; a fourth transistor that conducts to set the first transistor in a non-conductive state; and a fourth transistor that conducts the second transistor in response to an input signal of a small level or higher. a second bias circuit that conducts the third transistor in response to an input signal of an intermediate level or higher; and a third bias circuit that conducts the fourth transistor in response to an input signal of an intermediate level. , the first light emitting element emits light when the input signal is at a small level, and the first light emitting element emits light when the input signal is at a medium level.
The second light emitting element emits light, and when the input signal is at a high level, the second light emitting element emits light.
An input signal level display circuit characterized by causing a light emitting element to emit light.