JPH02189893A - Dimmer - Google Patents

Dimmer

Info

Publication number
JPH02189893A
JPH02189893A JP1006933A JP693389A JPH02189893A JP H02189893 A JPH02189893 A JP H02189893A JP 1006933 A JP1006933 A JP 1006933A JP 693389 A JP693389 A JP 693389A JP H02189893 A JPH02189893 A JP H02189893A
Authority
JP
Japan
Prior art keywords
capacitor
phase control
light emitting
control switch
light
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
Application number
JP1006933A
Other languages
Japanese (ja)
Inventor
Taku Tsuda
津田 卓
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP1006933A priority Critical patent/JPH02189893A/en
Publication of JPH02189893A publication Critical patent/JPH02189893A/en
Pending legal-status Critical Current

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  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

PURPOSE:To have operation display with a constant light quantity regardless of the phase angle by inserting a light emitting element in a capacitor discharge path of a CR time constant circuit in a dimming device using a phase control switch. CONSTITUTION:In a dimming device using for ex. a triode AC switch T as phase control switch, two light emitting diodes LED1, LED2, which are provided in opposite parallel connection as light emitting element LA for operation display, are inserted in the discharge path of a capacitor C forming a CR time constant circuit. Either of these LEDs will emit light in compliance with polarity change at two points A, B in the dimmer circuit for every half-wave of AC mains. This light emission takes place with a constant light quantity regardless of change in the phase angle of triode AC switch T, which together with pulsed lighting enables high brightness light emission with a minor power.

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は位相制御によって照明負荷を調光する調光器に
関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a dimmer that dims a lighting load by phase control.

[従来の技術] 第5図はこの種の従来の調光器の回路を示しており、こ
の調光器では位相制御スイッチ素子としてトライアック
Tを用い、操作スイッチswがオンされると、可変抵抗
器VRによりコンデンサCを充電し、この充電電圧がダ
イアック、SBS等からなるトリガ素子Qのブレークオ
ーバ電圧に達した際に1−リカ素子Qが導通してトライ
アックTのゲートにコンデンサCの充電電荷をゲート電
流として放電させ、1へライアック′Fをトリガする。
[Prior Art] Fig. 5 shows a circuit of a conventional dimmer of this type. This dimmer uses a triac T as a phase control switching element, and when the operation switch sw is turned on, a variable resistor The capacitor C is charged by the capacitor VR, and when this charging voltage reaches the breakover voltage of the trigger element Q consisting of a diac, SBS, etc., the 1-reactor element Q becomes conductive and the charged charge of the capacitor C is transferred to the gate of the triac T. is discharged as a gate current and triggers LIAC'F to 1.

トライアックTか導通ずると交流電源AC1照明負荷り
、操作スイッチSW、トライアックT、交流電源ACの
回路或は交流電源AC、トライアックT、操作スイッチ
SW、照明負荷し、交流電源ACの回路に電流か流れて
照明負荷りを点灯する。
If the TRIAC T is conductive, the AC power supply AC1 is connected to the lighting load, the operation switch SW, the TRIAC T, the circuit of the AC power supply AC, or the AC power supply AC, the TRIAC T, the operation switch SW, and the lighting load, and the current is applied to the circuit of the AC power supply AC. Light up the flowing lighting load.

このとき可変抵抗器VRと、コンデンサCのCR時定数
の設定値てトライアックTの導通位相角が決まり、この
導通位相角を可変抵抗器VRて任意に設定することによ
り照明負荷I−を調光することかてきるのである。
At this time, the conduction phase angle of the triac T is determined by the variable resistor VR and the set value of the CR time constant of the capacitor C, and by arbitrarily setting this conduction phase angle with the variable resistor VR, the lighting load I- can be dimmed. There are things you can do.

ところて従来例てはトライアック1゛の両端に抵抗Rを
介して接続しであるネオン管NEを1〜ライアツクTの
両端電圧で点灯させ、調光器の動作を表示するようにな
っている。
However, in the prior art, a neon tube NE connected to both ends of the TRIAC 1 through a resistor R is turned on at a voltage between TRIAC 1 and TRIAC T to indicate the operation of the dimmer.

[発明が解決しようとする課題] しかしながら従来例ではトライアックTの両端電圧が低
い時、即ち照明負荷りが明るく点灯しているときにはネ
オン管NEが暗くなり、逆にトライアックTの両端電圧
が高い時には、即ち照明負荷■−が暗く点灯している時
にはネオン管NEが明るくなり、動作表示の明るさレベ
ルが一定とならないという問題があった。
[Problems to be Solved by the Invention] However, in the conventional example, when the voltage across the triac T is low, that is, when the lighting load is brightly lit, the neon tube NE becomes dark, and conversely, when the voltage across the triac T is high, the neon tube NE becomes dark. That is, when the lighting load (1) is dimly lit, the neon tube NE becomes bright, causing a problem in that the brightness level of the operation display is not constant.

また特願昭55−26040号のような調光器も動作表
示を行う構成を備えているが、この従来例は1へライア
ックのトリガ回路は交流電源を降圧整流した直流電源を
持つもので、交流電源と、照明負荷の直列回路に接続す
る調光器とは異なり、従ってこの種の調光器の動作表示
には適用できなかった。
In addition, a dimmer such as the one disclosed in Japanese Patent Application No. 55-26040 is also equipped with a configuration that displays the operation, but in this conventional example, the trigger circuit of the LIAC has a DC power source that is step-down rectified AC power source. This method is different from a dimmer that is connected to a series circuit of an AC power source and a lighting load, and therefore cannot be applied to display the operation of this type of dimmer.

本発明は上述の問題点に鑑みて為されたもので、その目
的とするところは交流電源と照明負荷との直列回路に接
続して用いる調光器において、動作表示の明るさレベル
か安定した調光器を提供するにある。
The present invention has been made in view of the above-mentioned problems, and its purpose is to provide a dimmer that is connected to a series circuit of an AC power source and a lighting load to ensure that the brightness level of the operation display is stable. There is a dimmer available.

[課題を解決するための手段] 本発明は交流電源と、照明負荷との直列回路に操作スイ
ッチを介して位相制御スイッチ素子を接続するとともに
、位相制御スイッチ素子の導通位相を設定する可変抵抗
素子とコンデンサとからなるCR時定数回路を接続し、
上記位相制御スイッチ素子のケー1−には上記コンデン
ザの両端電圧がフレークオーバ電圧に達すると導通して
上記コンデンサの充電電荷により」―記位相制御スイッ
チ素子にチー1〜電流を流すトリガ素子を接続した調光
器において、上記コンデンサの充電電荷の放電経路に動
作表示用発光素子を挿入したものである。
[Means for Solving the Problems] The present invention connects a phase control switch element to a series circuit of an AC power source and a lighting load via an operation switch, and also provides a variable resistance element that sets the conduction phase of the phase control switch element. Connect a CR time constant circuit consisting of and a capacitor,
When the voltage across the capacitor reaches the flake over voltage, a trigger element is connected to the phase control switching element, which conducts when the voltage across the capacitor reaches the flake over voltage and causes a current to flow through the phase control switching element. In this dimmer, a light emitting element for indicating operation is inserted in the discharge path of the charge of the capacitor.

[作用] 本発明は位相制御スイッチ素子の1〜リガを行うための
グー1−電流で動作表示用発光素子を点灯するため、+
−ライアックの導通位相角に左右されることなく、動作
表示用発光素子に一定の電流を流すことがてき、結果一
定の明るさで動作表示が行え、しかもパルス状電流によ
って動作表示用発光素子を点灯するため小さな消費電力
で高輝度の発光表示が行えるのである。
[Function] In the present invention, in order to light up the operation display light emitting element with the 1-1 current of the phase control switch element for rigging, +
- A constant current can be passed through the light-emitting element for displaying operation without being affected by the conduction phase angle of the Liac, and as a result, the light-emitting element for displaying operation can be displayed with constant brightness. Because it lights up, high-brightness light-emitting display can be achieved with low power consumption.

[実施例] 以下本発明を実施例によって説明する。[Example] The present invention will be explained below with reference to Examples.

第1図は本発明の一実施例の回路を示しており、位相制
御のための回路は基本的には第5図に示した従来例と同
様な回路構成のものであるが、動作表示用発光素子LA
として逆並列に接続した2つの発光ダイオードLED]
、、LED2を用いるとともに、トライアックTの導通
位相を設定するためのCR時定数のコンデンサCと、ダ
イアックからなるトリガ素子Qとの間に上記動作表示用
発光素子LAを直列に挿入した点で従来例と相違する。
FIG. 1 shows a circuit according to an embodiment of the present invention. The circuit for phase control basically has the same circuit configuration as the conventional example shown in FIG. Light emitting element LA
Two light emitting diodes LED connected in antiparallel as
,,In addition to using the LED2, the light-emitting element LA for operation indication is inserted in series between the capacitor C with a CR time constant for setting the conduction phase of the triac T, and the trigger element Q consisting of a diac. Different from the example.

而して操作スイッチSWをオンして、調光器を動作させ
ている状態で、図においてA点か正て、B点が負である
交流電源ACの半波のときには可変抵抗器VRを通して
コンデンサCが充電され、このコンデンサCの両端電圧
か1へリカ素子Qのブレークオーバ電圧に達すると、I
・リカ素子Qが導通して、コンデンサCの充電電荷はコ
ンデンサC→発光タイオードL E、 D 1−−トリ
ガ素子Q→トライアックTのゲートG→トライアックT
のT1端子→=1ンデンサCの回路にて放電され、トラ
イアックTを1〜リガする。このとき放電電流て発光ダ
イオードLEDIが点灯することになる。
When the operation switch SW is turned on and the dimmer is operating, when the half wave of the AC power supply AC is positive at point A and negative at point B in the figure, the capacitor is connected through the variable resistor VR. When C is charged and the voltage across this capacitor C reaches the breakover voltage of 1 helical element Q, I
・When the trigger element Q becomes conductive, the charge in the capacitor C is transferred to the capacitor C → the light emitting diode LE, D 1--the trigger element Q → the gate G of the triac T → the triac T
The T1 terminal of is discharged in the circuit of the capacitor C, and the triac T is triggered from 1 to 1. At this time, the light emitting diode LEDI lights up due to the discharge current.

次に図においてA点が負で、B点か正である交流電源A
Cの半波のときにはコンデンサCは上述の場合と逆方向
に充電されこのコンデンサCの両端電圧が1〜リガ素子
Qのブレークオーバ電圧に達すると、トリガ素子Qが導
通して、コンデンサCの充電電荷はコンデンサC→トラ
イアックTの下端子−+−ライアックTのゲートG→ト
リ力素子Q、発光タイオードI−E D 2→コンデン
サCの回路にて放電され、トライアック′Fをトリガす
る。
Next, in the diagram, point A is negative and point B is positive, AC power source A
During the half wave of C, capacitor C is charged in the opposite direction to the above case, and when the voltage across this capacitor C reaches 1 to the breakover voltage of trigger element Q, trigger element Q becomes conductive and charges capacitor C. The charge is discharged in the circuit of capacitor C→lower terminal −+ of TRIAC T→gate G of RIAC T→triforce element Q, light emitting diode I-ED 2→capacitor C, and triggers triac 'F.

このとき放電電流で発光タイオード1.、、 E D 
2が点灯することになる。ここでコンデンサCの充電電
荷の放電による放電電流はパルス状の電流(通常200
〜500mAピーク)てトリガ素子Qのブレークオーバ
電圧て決定されるなめ、1〜ライアツクTの導通位相角
とは無関係にその電流値は一定であり、発光ダイオード
LED]、、LED2を点灯させるのには充分安定て、
しかもパルス点灯させるなめに、小さな消費電力で高輝
度を得ることかでき、その上交流電源ACの各半波て点
灯するからちらつきも無い。
At this time, the discharge current causes the light emitting diode 1. ,, E D
2 will be lit. Here, the discharge current due to the discharge of the charge in the capacitor C is a pulse-like current (usually 200
~500mA peak) is determined by the breakover voltage of the trigger element Q, so the current value is constant regardless of the conduction phase angle of the light-emitting diode (LED), LED2. is stable enough,
Moreover, since the lamp is lit in pulses, it is possible to obtain high brightness with low power consumption, and since the lamp is lit with each half wave of the AC power supply, there is no flickering.

尚1−ライアツクTがオンした後、交流電源ACの極性
が反転してl・ライアックTがオフするまてはトライア
ックTの両端電圧は零であるためトリガ素子Qが動作す
ることはない。
Note that after the 1-liac T is turned on, the trigger element Q does not operate because the voltage across the TRIAC T is zero until the polarity of the alternating current power supply AC is reversed and the 1-liac T is turned off.

第2図は動作表示用発光素子LAを構成する発光ダイオ
ードLED]、、LED2の挿入位置をトライアックT
のゲートGとトリガ素子Qとの間とした実施例を示して
おり、この実施例の場合も−F記実施例と同様な動作表
示が行える。
Figure 2 shows the light emitting diode LED that constitutes the light emitting element LA for operation display.
This embodiment shows an embodiment in which the trigger element Q is located between the gate G and the trigger element Q, and in this embodiment, the same operation display as in the embodiment described in -F can be performed.

尚動作表示用発光素子L Aを構成する発光ダイオード
LED 1又はLED2を第3図に示すようにダイオー
ドDに置き換えて、交流電源ACの一方の半波で一つの
発光ダイオードLEDを点灯させるようにしても良い。
The light emitting diode LED 1 or LED 2 constituting the operation display light emitting element L A is replaced with a diode D as shown in Fig. 3, so that one light emitting diode LED is lit by one half wave of the AC power supply AC. It's okay.

また第4図に示すように動作表示用発光素子LAとして
タイオードD1〜D、からなるダイオードブリッジD 
Bと発光ダイオードI−E Dとを組み合わせて構成し
、一つの発光ダイオードLEDを交流電源ACの両半波
において点灯させるようにしても良い。
Further, as shown in FIG. 4, a diode bridge D consisting of diodes D1 to D is used as a light emitting element LA for displaying operation.
B and light emitting diodes I-ED may be combined, and one light-emitting diode LED may be lit in both half waves of the alternating current power supply AC.

更に1〜リカ素子Qとしてはダイアックの代わりにSR
3等の素子を用いても良い。
Furthermore, SR is used instead of DIAC as 1 to Rica element Q.
A third grade element may also be used.

[発明の効果] 本発明は交流電源と、照明負荷との直列回路に操作スイ
ッチを介して位相制御スイッチ素子を接続するとともに
、位相制御スイッチ素子の導通位相を設定する可変抵抗
素子とコンデンサとからなるCR時定数回路を接続し、
上記位相制御スイッチ素子のゲートには」二層コンデン
ザの両端電圧がブレークオーバ電圧に達すると導通して
上記コンデンサの充電電荷により」1記位相制御スイッ
チ素子にケーI・電流を流すトリガ素子を接続した調光
器において、上記コンデンサの充電電荷の放電経路に動
作表示用発光素子を挿入しであるから、位相制御スイッ
チ素子のトリカを行うためのパルス状のゲート電流で動
作表示用発光素子を点灯することができ、そのためトラ
イアックの導通位相角に関係なく動作表示用発光素子に
一定の電流を流すことができ、結果一定の明るさで動作
表示が行え、しかもパルス状電流で点灯させるから小さ
な消費電力で高輝度の点灯が行えるという効果がある。
[Effects of the Invention] The present invention connects a phase control switch element to a series circuit of an AC power source and a lighting load via an operation switch, and also connects a variable resistance element and a capacitor to set the conduction phase of the phase control switch element. Connect the CR time constant circuit,
Connected to the gate of the phase control switch element is a trigger element that becomes conductive when the voltage across the two-layer capacitor reaches the breakover voltage and causes a current to flow through the phase control switch element (1) due to the charge in the capacitor. In this dimmer, a light-emitting element for indicating operation is inserted in the discharge path of the charge charged in the capacitor, so the light-emitting element for indicating operation is lit with a pulsed gate current to trigger the phase control switch element. Therefore, a constant current can be passed through the light emitting element for operation display regardless of the conduction phase angle of the triac, and as a result, the operation display can be performed with constant brightness, and since it is lit with a pulsed current, the consumption is small. The effect is that high-intensity lighting can be achieved using electric power.

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

第1図は本発明の一実施例の回路図、第2図は本発明の
別の実施例の回路図、第3図、第4図は本発明に使用す
る動作表示用発光素子の別の例を示す回路図、第5図は
従来例の回路図てあり、LAは動作表示用発光素子、L
EDI、LED2は発光ダイオード、Tは1〜ライアツ
ク、Qは1〜リカ素子、Lは照明負荷、Cはコンデンサ
、VRは可変抵抗器である。 代理人 弁理士 石 1)長 七
Fig. 1 is a circuit diagram of one embodiment of the present invention, Fig. 2 is a circuit diagram of another embodiment of the present invention, and Figs. A circuit diagram showing an example, FIG. 5 is a circuit diagram of a conventional example, LA is a light emitting element for operation display, L
EDI and LED2 are light-emitting diodes, T is 1 to 3000 MHz, Q is 1 to 100% liquid element, L is a lighting load, C is a capacitor, and VR is a variable resistor. Agent Patent Attorney Ishi 1) Choshichi

Claims (1)

【特許請求の範囲】[Claims] (1)、交流電源と、照明負荷との直列回路に操作スイ
ッチを介して位相制御スイッチ素子を接続するとともに
、位相制御スイッチ素子の導通位相を設定する可変抵抗
素子とコンデンサとからなるCR時定数回路を接続し、
上記位相制御スイッチ素子のゲートには上記コンデンサ
の両端電圧がブレークオーバ電圧に達すると導通して上
記コンデンサの充電電荷により上記位相制御スイッチ素
子にゲート電流を流すトリガ素子を接続した調光器にお
いて、上記コンデンサの充電電荷の放電経路に動作表示
用発光素子を挿入して成ることを特徴とする調光器。
(1) A CR time constant consisting of a variable resistance element and a capacitor that connects a phase control switch element to a series circuit of an AC power source and a lighting load via an operation switch, and sets the conduction phase of the phase control switch element. connect the circuit,
In the dimmer, a trigger element is connected to the gate of the phase control switch element, which becomes conductive when the voltage across the capacitor reaches a breakover voltage, and causes a gate current to flow through the phase control switch element by the charge charged in the capacitor. A dimmer characterized in that a light emitting element for displaying operation is inserted in a discharge path of the charge charged in the capacitor.
JP1006933A 1989-01-14 1989-01-14 Dimmer Pending JPH02189893A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1006933A JPH02189893A (en) 1989-01-14 1989-01-14 Dimmer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1006933A JPH02189893A (en) 1989-01-14 1989-01-14 Dimmer

Publications (1)

Publication Number Publication Date
JPH02189893A true JPH02189893A (en) 1990-07-25

Family

ID=11652054

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1006933A Pending JPH02189893A (en) 1989-01-14 1989-01-14 Dimmer

Country Status (1)

Country Link
JP (1) JPH02189893A (en)

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