JPH0186791U

JPH0186791U -

Info

Publication number: JPH0186791U
Application number: JP18258787U
Authority: JP
Priority date: 1987-11-30
Filing date: 1987-11-30
Publication date: 1989-06-08

Description

[Brief explanation of the drawing]

第１図は本考案による第１の実施例で発光ダイ
オードとトランジスタのコレクタ間にＣＲ並列回
路を追加した回路図、第２図は本考案による第２
の実施例でトランジスタのエミツタとアース回路
間にＣＲ並列回路を追加した回路図、第３図は本
考案を適用したときに発光ダイオードに流れる直
流電流と時間の関係を示す図、第４図は受信側Ａ
ＧＣ回路のＡＧＣ電圧の立ち上がりと時間の関係
を示す図、第５図は従来のリモコン送信回路図、
第６図は従来のリモコン送信回路による発光ダイ
オードに流れる直流電流と時間の関係を示す図、
第７図は従来のリモコン送信回路を用いたときの
受信側ＡＧＣ回路のＡＧＣ電圧の立ち上がりと時
間の関係を示す図である。図中、１はキー操作部、２はコード信号発生部
、３は発光ダイオードに制御用の信号を与えるリ
モコン送信回路部でＲ１，Ｒ２は抵抗器、Ｃはコ
ンデンサ、Ｄは発光ダイオード、ＴＲはトランジ
スタである。 Figure 1 is a circuit diagram of the first embodiment according to the present invention in which a CR parallel circuit is added between the collector of the light emitting diode and the transistor, and Figure 2 is the circuit diagram of the second embodiment according to the present invention.
A circuit diagram in which a CR parallel circuit is added between the emitter of the transistor and the ground circuit in this embodiment, Figure 3 is a diagram showing the relationship between the direct current flowing through the light emitting diode and time when the present invention is applied, and Figure 4 is Receiving side A
A diagram showing the relationship between the rise of the AGC voltage of the GC circuit and time. Figure 5 is a diagram of a conventional remote control transmission circuit.
Figure 6 is a diagram showing the relationship between the DC current flowing through the light emitting diode and time in a conventional remote control transmitting circuit.
FIG. 7 is a diagram showing the relationship between the rise of the AGC voltage of the receiving side AGC circuit and time when a conventional remote control transmitting circuit is used. In the figure, 1 is a key operation section, 2 is a code signal generation section, 3 is a remote control transmission circuit section that provides control signals to the light emitting diode, R1 and R2 are resistors, C is a capacitor, D is a light emitting diode, and TR is a light emitting diode. It is a transistor.

Claims

[Scope of claims for utility model registration] (1) A key operation unit having a plurality of operation keys;
a code signal generation section that generates a code signal in response to a key operation of the key operation section; a transistor that is driven by the code signal from the code signal generation section; a light emitting diode that emits light by driving the transistor; and a direct current flowing through the light emitting diode. A resistor that determines a current value is configured in series, one end of the resistor is connected to a B power supply, and the emitter terminal of the transistor is connected to a ground circuit.The resistor and the capacitor are configured in parallel in a remote control transmission circuit section. A remote control transmitting circuit comprising: a circuit connected in series with a series circuit of the remote control transmitting circuit section. (2) A resistor and a capacitor are configured and coupled in parallel between collector terminals of a light emitting diode and a transistor in a series circuit consisting of a resistor, a light emitting diode, and a transistor, which constitute a transmitting circuit section of the remote control. A remote control transmitting circuit according to claim 1 of the utility model registration claim. (3) A resistor and a capacitor are configured and coupled in parallel between the emitter terminal of a transistor of a series circuit consisting of a resistor, a light emitting diode, and a transistor constituting the transmitting circuit section of the remote control and a ground circuit. A remote control transmitting circuit according to claim 1 of the utility model registration claim.