JP3265489B2 - Airport lighting power supply control device - Google Patents
Airport lighting power supply control deviceInfo
- Publication number
- JP3265489B2 JP3265489B2 JP08361493A JP8361493A JP3265489B2 JP 3265489 B2 JP3265489 B2 JP 3265489B2 JP 08361493 A JP08361493 A JP 08361493A JP 8361493 A JP8361493 A JP 8361493A JP 3265489 B2 JP3265489 B2 JP 3265489B2
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- circuit
- current
- lighting
- conduction angle
- 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.)
- Expired - Fee Related
Links
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- Circuit Arrangement For Electric Light Sources In General (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、空港照明灯の給電制御
装置に関し、特に、照明灯の通電路を利用して定電圧出
力を抽出し、定電圧電源を必要とする他の電気負荷に供
給するシステムに好適な技術に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply control device for an airport light, and more particularly, to a constant voltage output using a current path of the light to be supplied to another electric load requiring a constant voltage power supply. The present invention relates to a technique suitable for a supply system.
【0002】[0002]
【従来の技術】図3に、従来の空港照明灯の給電回路を
示す。図において、定電流電源回路1に接続される電力
供給用の通電線a,bには、複数の照明トランスLT
1,LT2,・・・,LTnが直列接続され、これら照
明トランスLT1,LT2,・・・,LTnに、例えば
滑走路や誘導路等に配設される中心線灯等の照明灯L
1,L2,・・・,Lnが接続されている。また、定電
流源回路1から供給される交流の電流を導通角制御する
導通角制御回路2が設けられている。2. Description of the Related Art FIG. 3 shows a conventional power supply circuit for airport lighting. In the figure, a plurality of illumination transformers LT are connected to power supply conducting lines a and b connected to the constant current power supply circuit 1.
, LTn are connected in series, and the illumination transformers LT1, LT2,..., LTn are connected to the illumination lamp L such as a centerline lamp disposed on a runway or a taxiway, for example.
1, L2,..., Ln are connected. Further, a conduction angle control circuit 2 for controlling a conduction angle of an alternating current supplied from the constant current source circuit 1 is provided.
【0003】そして、昼や夜等周囲の明るさに応じて照
明灯L1,L2,・・・,Lnの明るさ(照度)を変え
るために、図4に示すように、定電流源回路1で発生す
る点線で示す正弦波波形の交流電流を、所望の明るさに
応じて導通角制御回路2によって導通角φ1 ,φ2 ,・
・・,φm を設定して、通電線a,bに供給する電流を
導通角制御している。この場合、照明灯L1,L2,・
・・,Lnの明るさが、導通角がφ1 →φm になるにつ
れて減少する。尚、図4では、導通角φ1 の時の電流波
形を実線で示してある。In order to change the brightness (illuminance) of the illuminating lamps L1, L2,..., Ln according to the surrounding brightness such as day or night, as shown in FIG. The alternating current having a sine wave waveform shown by the dotted line generated by the conduction angle control circuit 2 is applied to the conduction angles φ 1 , φ 2 ,.
..., by setting the phi m, it is conduction angle controlled current supplied electric conductors a, the b. In this case, the illumination lamps L1, L2,.
.., The brightness of Ln decreases as the conduction angle becomes φ 1 → φ m . In FIG. 4, there is shown a current waveform when the conduction angle phi 1 in solid lines.
【0004】このように、空港内の照明灯の給電システ
ムでは、定電流源を使用して全ての照明灯を同じ明るさ
にすると共に、電流の導通角制御によって、周囲の明る
さに応じて照明灯の明るさが変えられるようにしてい
る。[0004] As described above, in the power supply system for the lighting in the airport, all the lightings are made to have the same brightness by using the constant current source, and the current conduction angle control is performed in accordance with the surrounding brightness. The brightness of the lighting can be changed.
【0005】[0005]
【発明が解決しようとする課題】ところで、近年、発着
する航空機の増大等により、航空機の地上走行誘導にお
いて、照明灯の設けられる滑走路や誘導路の付近に、航
空機が存在しているか否かを検出するセンサを設け、こ
のセンサの出力情報を管制塔等に送信するシステムの必
要性が生じてきている。この場合、これらセンサや送信
手段の電源としては、定電圧電源を必要とする。このた
め、この定電圧出力を、照明灯の通電路a,bから取り
出すことが考えられている。In recent years, due to an increase in the number of departing and arriving aircraft, it has been determined whether or not an aircraft is present near a runway or a taxiway provided with an illuminating light during taxiing of the aircraft. A need has arisen for a system that is provided with a sensor for detecting the output of the control tower and transmits the output information of the sensor to a control tower or the like. In this case, a constant voltage power supply is required as a power supply for these sensors and the transmission means. For this reason, it has been considered to take out this constant voltage output from the current paths a and b of the lighting lamp.
【0006】図5は、照明灯の給電回路から定電圧出力
を取り出す給電システムの回路構成を示している。尚、
図中、図3と同一部分には同一符号を付してある。この
回路では、通電線bに、照明灯L1,L2,・・・,L
nの通電線a,bから定電圧の出力電圧を取り出すため
の例えばk個の飽和変圧回路ST1,ST2,・・・,
STkを直列に介装し、各飽和変圧回路ST1,ST
2,・・・,STkに、定電圧の電源を必要とする電気
負荷RL1,RL2,・・・,RLkをそれぞれ接続す
る。前記飽和変圧回路ST1は、図6に示すように、照
明灯に電流を供給する照明トランスと同様の照明トラン
スLTと、共振コンデンサCを備えた飽和トランスST
とからなり、照明トランスLTを介して飽和トランスS
Tから電気負荷RL1に電圧が供給される。尚、その他
の飽和変圧回路ST2,・・・,STkも同様の構成で
ある。FIG. 5 shows a circuit configuration of a power supply system for extracting a constant voltage output from a power supply circuit of an illumination lamp. still,
In the figure, the same parts as those in FIG. 3 are denoted by the same reference numerals. In this circuit, the lighting lines L1, L2,.
For example, k saturation transformers ST1, ST2,... for extracting a constant output voltage from the n conducting lines a, b.
STk in series, and each of the saturation transformers ST1, ST
, STk are connected to electric loads RL1, RL2,... RLk each requiring a constant-voltage power supply. As shown in FIG. 6, the saturation transformer ST1 includes an illumination transformer LT similar to an illumination transformer for supplying current to an illumination lamp, and a saturation transformer ST having a resonance capacitor C.
And a saturation transformer S via an illumination transformer LT.
A voltage is supplied from T to the electric load RL1. .., STk have the same configuration.
【0007】ここで、通電線a,bに流れる電流(実効
値)に対する前記飽和トランスSTの交流出力電圧の出
力特性は、図7のようになっている。即ち、入力電流が
大きくなるにつれて出力電圧の変化率が減少し、入力電
流がある程度大きくなると出力電圧が飽和して略一定に
なることが判る。このため、導通角制御によって照明灯
L1,L2,・・・,Lnの明るさを変化させる構成を
とっている照明灯給電回路に、このような飽和トランス
を利用した飽和変圧回路ST1,ST2,・・・,ST
kを、図5のように単に接続して定電圧を取り出す構成
とすると、導通角制御により通電線a,bに供給する電
流量が減少した時に、この電流量の変化に伴って飽和変
圧回路ST1,ST2,・・・,STkの出力電圧が変
動する虞れがある。Here, the output characteristic of the AC output voltage of the saturation transformer ST with respect to the current (effective value) flowing through the conducting lines a and b is as shown in FIG. That is, it can be seen that the rate of change of the output voltage decreases as the input current increases, and that the output voltage saturates and becomes substantially constant when the input current increases to some extent. For this reason, in the lighting lamp power supply circuit configured to change the brightness of the lighting lamps L1, L2,..., Ln by the conduction angle control, a saturation transformer circuit ST1, ST2, using such a saturation transformer is used. ..., ST
If k is simply connected as shown in FIG. 5 to take out a constant voltage, when the amount of current supplied to the conducting lines a and b is reduced by the conduction angle control, the saturation transformer circuit accompanies the change in the amount of current. There is a possibility that the output voltages of ST1, ST2,..., STk fluctuate.
【0008】本発明は上記の事情に鑑みてなされたもの
で、照明灯の明るさを変化させることができ、しかも、
定電圧電源を必要とする電気負荷への電圧供給も安定に
行える空港照明灯の給電制御装置を提供することを目的
とする。The present invention has been made in view of the above circumstances, and can change the brightness of an illuminating lamp.
An object of the present invention is to provide a power supply control device for an airport lighting that can stably supply a voltage to an electric load that requires a constant voltage power supply.
【0009】[0009]
【課題を解決するための手段】このため、本発明の空港
照明灯の給電制御装置では、定電流電源回路に接続され
る通電線に直列接続した複数の照明トランスと、これら
各照明トランスを介してそれぞれ給電される複数の照明
灯と、前記定電流電源回路から通電線に供給する交流電
流を導通角制御して供給電流量を設定する導通角制御回
路と、前記照明トランスと直列に接続するよう前記通電
線に介装される定電圧抽出回路と、該定電圧抽出回路を
定電圧電源とする電気負荷と、前記複数の照明トランス
に対して並列に接続された通電路に介装されて当該通電
路を導通・遮断するスイッチ回路とを備え、前記導通角
制御回路によって、定電流電源回路の出力電流導通角を
一定に固定制御し且つ前記スイッチ回路のON/OFF
を照明灯の設定照度に応じて導通角制御する構成とし
た。For this reason, in the power supply control device for an airport lighting device according to the present invention, a plurality of lighting transformers connected in series to a conducting line connected to a constant current power supply circuit, and each of these lighting transformers are connected. A plurality of illuminating lamps each of which is supplied with power, a conduction angle control circuit that sets an amount of supply current by controlling a conduction angle of an alternating current supplied from the constant current power supply circuit to a conduction line, and is connected in series with the illumination transformer. A constant voltage extraction circuit interposed in the current supply line, an electric load using the constant voltage extraction circuit as a constant voltage power supply, and an electric load connected in parallel to the plurality of lighting transformers. And a switch circuit for conducting / cutting off the current path. The conduction angle control circuit controls the output current conduction angle of the constant current power supply circuit to be fixed and ON / OFF of the switch circuit.
Is configured to control the conduction angle according to the set illuminance of the illumination lamp.
【0010】[0010]
【作用】かかる構成において、定電流電源回路からの出
力電流は、常に一定の導通角で導通角制御回路によって
導通角制御されて定電圧抽出回路には常に一定の電流が
供給され、一定の電圧が抽出できる。一方、導通角制御
回路によって、スイッチ回路は照明灯の設定照度に応じ
た導通角でON/OFF制御され、スイッチ回路がON
している期間は、通電線に直列接続されている照明トラ
ンスが短絡されて電流が流れない。In this configuration, the output current from the constant current power supply circuit is always controlled at a constant conduction angle by the conduction angle control circuit, so that a constant current is always supplied to the constant voltage extraction circuit, and a constant voltage is output. Can be extracted. On the other hand, the switch circuit is turned on / off by the conduction angle control circuit at a conduction angle corresponding to the set illuminance of the illumination lamp, and the switch circuit is turned on.
During this period, the lighting transformers connected in series to the energizing lines are short-circuited and no current flows.
【0011】従って、定電圧抽出回路からの出力電圧は
安定し、照明灯への給電は可変できその明るさを変える
ことができるようになる。Therefore, the output voltage from the constant voltage extracting circuit is stabilized, and the power supply to the illuminating lamp can be changed, and the brightness can be changed.
【0012】[0012]
【実施例】以下、本発明の一実施例を図面に基づいて説
明する。本実施例の回路構成を図1に示す。尚、従来と
同一部分は同一符号を付して説明を省略する。図1にお
いて、定電流電源回路1に接続される通電線a,bに、
複数の照明トランスLT1,LT2,・・・,LTnが
直列接続され、これら照明トランスLT1,LT2,・
・・,LTnに照明灯L1,L2,・・・,Lnが接続
されている。また、通電線a,bから定電圧の出力電圧
を取り出すための定電圧抽出回路としての飽和変圧回路
ST1,ST2,・・・,STkが直列に設けられ、各
電気負荷RL1,RL2,・・・,RLkがそれぞれ接
続されている。以上の構成は従来と同様である。An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a circuit configuration of the present embodiment. The same parts as those in the related art are denoted by the same reference numerals, and description thereof will be omitted. In FIG. 1, current-carrying lines a and b connected to the constant-current power supply circuit 1
A plurality of lighting transformers LT1, LT2,..., LTn are connected in series, and these lighting transformers LT1, LT2,.
.., Ln are connected to illumination lights L1, L2,..., Ln. Further, saturation transformers ST1, ST2,..., STk as constant voltage extracting circuits for extracting a constant voltage output voltage from the conducting lines a, b are provided in series, and the respective electric loads RL1, RL2,. ., RLk are connected. The above configuration is the same as the conventional one.
【0013】かかる照明灯の給電回路において、通電線
a,bに設けられる照明トランスLT1,LT2,・・
・,LTnの直列回路に対して並列に端子X,Y間に通
電線cを接続し、この通電線cに、例えばサイリスタ或
いは双方向性サイリスタ等により構成したスイッチ回路
3を介装する。導通角制御回路2′は、定電流電源回路
1とスイッチ回路3をトリガするもので、AC電源に同
期して定電流電源回路1の電流出力の導通角を、定電圧
抽出回路としての飽和変圧回路ST1,ST2,・・
・,STkの各飽和トランスSTが飽和できる所定の一
定値、例えば本実施例では照明灯L1,L2,・・・,
Lnの最大電流量に対応する導通角φ1 に制御する。ま
た、スイッチ回路3のON/OFFを照明灯L1,L
2,・・・,Lnの設定照度に応じて導通角制御する構
成である。尚、定電流電源回路1の出力電流は、例えば
スイッチ回路3と同様にサイリスタ等を用いて通電開始
の導通角を制御することができる。In the power supply circuit of the illumination lamp, the illumination transformers LT1, LT2,.
An energizing line c is connected between the terminals X and Y in parallel with the series circuit of LTn, and a switching circuit 3 constituted by, for example, a thyristor or a bidirectional thyristor is interposed on the energizing line c. The conduction angle control circuit 2 'triggers the constant current power supply circuit 1 and the switch circuit 3, and synchronizes the conduction angle of the current output of the constant current power supply circuit 1 in synchronization with the AC power supply with a saturation transformer as a constant voltage extraction circuit. Circuits ST1, ST2,.
, STk a predetermined constant value at which each of the saturation transformers ST can saturate, for example, in this embodiment, the illumination lamps L1, L2,.
Controlling the conduction angle phi 1 corresponding to the maximum current amount of ln. Further, the ON / OFF of the switch circuit 3 is determined by the illumination lamps L1, L
2,..., Ln, the conduction angle is controlled in accordance with the set illuminance. The output current of the constant current power supply circuit 1 can control the conduction angle at the start of energization by using a thyristor or the like, for example, similarly to the switch circuit 3.
【0014】次に、本実施例の給電制御装置の作用を図
2のタイムチャートを参照しながら説明する。定電流電
源回路1の出力電流は、導通角制御回路2′によって導
通角制御され、照明灯L1,L2,・・・,Lnの最大
照度に対応する導通角φ1 の出力電流IS が常時出力さ
れる。一方、スイッチ回路3が、導通角制御回路2′に
よって、導通角φi でトリガされてONし通電線cが導
通すると、端子間X,Yが短絡され導通角φi からπま
での期間では、通電線cに電流Iが流れ、照明トランス
LT1,LT2,・・・,LTnへの電流IL は流れな
い。Next, the operation of the power supply control device of this embodiment will be described with reference to the time chart of FIG. Output current of the constant current power supply circuit 1 is the conduction angle control by the conduction angle control circuit 2 ', lamp L1, L2, · · ·, the output current I S of the conduction angle phi 1 corresponding to the maximum illumination intensity of Ln is always Is output. On the other hand, when the switch circuit 3 is triggered by the conduction angle φ i by the conduction angle control circuit 2 ′ to turn on and the conduction line c becomes conductive, the terminals X and Y are short-circuited, and during the period from the conduction angle φ i to π, , a current I flows through the current supply line c, lighting transformer LT1, LT2, · · ·, current I L to LTn does not flow.
【0015】即ち、AC電源の半周期において、飽和変
圧回路ST1,ST2,・・・,STkには、図2中実
線で示すように、スイッチ回路3のON/OFFに関係
なく常に導通角φ1 からπまでの期間、電流IS が供給
されるが、照明トランスLT1,LT2,・・・,LT
nには、通電線cが短絡されることによってその短絡期
間は電流IL は供給されない(電流Iとして全て通電線
c側に流れる)ので、図2の実線で示すように、導通角
φ1 からφi までの期間だけ電流IL が供給されること
になる。That is, in the half cycle of the AC power supply, as shown by the solid line in FIG. 2, the conduction angle φ is always applied to the saturation transformers ST1, ST2,..., STk regardless of ON / OFF of the switch circuit 3. period from 1 to [pi, although the current I S is supplied, the lighting transformer LT1, LT2, · · ·, LT
The n, because the short circuit period by energizing line c is shorted current I L is not supplied (flows to all current-carrying wires c side as a current I), as indicated by the solid line in FIG. 2, the conduction angle phi 1 The current IL is supplied only during the period from to i .
【0016】尚、照明灯L1,L2,・・・,Lnを最
大照度に設定する場合には、スイッチ回路3をトリガせ
ずOFF状態にしておけばよい。これにより、照明トラ
ンスLT1,LT2,・・・,LTnには、飽和変圧回
路ST1,ST2,・・・,STkと同じ導通角φ1 か
らπまでの最大電流量が供給される。従って、本実施例
装置では、飽和変圧回路ST1,ST2,・・・,ST
kには、常時一定の電流が供給でき、安定した定電圧出
力を生成して電気負荷RL1,RL2,・・・,RLk
に供給できる。また、照明トランスLT1,LT2,・
・・,LTnには、スイッチ回路3をトリガする導通角
φi を可変制御して通電線cの短絡期間を変化させるこ
とで、供給する電流量を可変制御でき、照明灯L1,L
2,・・・,Lnの明るさを任意に設定することができ
る。When setting the illumination lamps L1, L2,..., Ln to the maximum illuminance, the switch circuit 3 may be turned off without triggering. Thus, lighting transformer LT1, LT2, · · ·, the LTn, saturated transformer circuit ST1, ST2, · · ·, the maximum amount of current from the same conduction angle phi 1 and STk until π is supplied. Therefore, in this embodiment, the saturation transformers ST1, ST2,.
k, a constant current can always be supplied, and a stable constant voltage output is generated to generate electric loads RL1, RL2,.
Can be supplied. In addition, the lighting transformers LT1, LT2,.
.., LTn can variably control the conduction angle φ i that triggers the switch circuit 3 to change the short-circuit period of the conducting line c, so that the amount of current to be supplied can be variably controlled.
,..., Ln can be set arbitrarily.
【0017】[0017]
【発明の効果】以上説明したように本発明によれば、定
電流電源回路からは常時照明灯の最大照度に対応する最
大出力を供給し、照明灯の照度をこれより暗くする場合
には、照明トランスの直列回路のみ所定の導通角度範囲
で短絡させて電流を流さないようにしたので、定電圧電
源を必要とする電気負荷に対して安定した定電圧を供給
できると共に、照明灯の明るさも任意に可変設定するこ
とができる。As described above, according to the present invention, the constant current power supply circuit always supplies the maximum output corresponding to the maximum illuminance of the illuminator, and when the illuminance of the illuminator is made darker than this, Since only the series circuit of the lighting transformer is short-circuited within the predetermined conduction angle range to prevent the current from flowing, a stable constant voltage can be supplied to the electrical load that requires a constant voltage power supply, and the brightness of the lighting lamp can be improved. It can be arbitrarily set variably.
【図1】本発明に係る空港照明灯の給電制御装置の一実
施例を示す回路図FIG. 1 is a circuit diagram showing an embodiment of a power supply control device for an airport lighting according to the present invention.
【図2】同上実施例の給電状態を説明するためのタイム
チャートFIG. 2 is a time chart for explaining a power supply state of the embodiment.
【図3】従来の空港照明灯の給電制御装置を示す回路図FIG. 3 is a circuit diagram showing a conventional power supply control device for airport lighting.
【図4】従来装置の給電導通角制御動作を説明するタイ
ムチャートFIG. 4 is a time chart for explaining a power supply conduction angle control operation of the conventional device.
【図5】従来の給電制御装置に定電圧電源を必要とする
電気負荷を接続した場合の回路図FIG. 5 is a circuit diagram in a case where an electric load requiring a constant voltage power supply is connected to a conventional power supply control device.
【図6】図5の回路に設けた飽和変圧回路の構成図6 is a configuration diagram of a saturation transformer provided in the circuit of FIG.
【図7】同上飽和変圧回路内に設ける飽和トランスの出
力特性を示す図FIG. 7 is a diagram showing output characteristics of a saturation transformer provided in the saturation transformer;
1 定電流電源回路 2′ 導通角制御回路 3 スイッチ回路 L1,L2,・・・,Ln 照明灯 LT1,LT2,・・・,LTn 照明トランス a,b,c 通電線 ST1,ST2,・・・,STk 飽和変圧回路(定
電圧抽出回路) RL1,RL2,・・・,RLk 電気負荷1 Constant current power supply circuit 2 'Conduction angle control circuit 3 Switch circuit L1, L2, ..., Ln Illumination lamp LT1, LT2, ..., LTn Illumination transformer a, b, c Conducting line ST1, ST2, ... , STk Saturation transformer circuit (constant voltage extraction circuit) RL1, RL2,.
フロントページの続き (58)調査した分野(Int.Cl.7,DB名) H02J 3/10 H05B 37/02 Continuation of the front page (58) Field surveyed (Int.Cl. 7 , DB name) H02J 3/10 H05B 37/02
Claims (1)
接続した複数の照明トランスと、 これら各照明トランスを介してそれぞれ給電される複数
の照明灯と、 前記定電流電源回路から通電線に供給する交流電流を導
通角制御して供給電流量を設定する導通角制御回路と、 前記照明トランスと直列に接続するよう前記通電線に介
装される定電圧抽出回路と、 該定電圧抽出回路を定電圧電源とする電気負荷と、 前記複数の照明トランスに対して並列に接続された通電
路に介装されて当該通電路を導通・遮断するスイッチ回
路とを備え、 前記導通角制御回路によって、定電流電源回路の出力電
流導通角を一定に固定制御し且つ前記スイッチ回路のO
N/OFFを照明灯の設定照度に応じて導通角制御する
構成としたことを特徴とする空港照明灯の給電制御装
置。1. A plurality of lighting transformers connected in series to a conducting line connected to a constant current power supply circuit, a plurality of lighting lamps each of which is supplied with power through each of the lighting transformers, and a conducting line from the constant current power supply circuit. A conduction angle control circuit for controlling a conduction angle of an alternating current supplied to the lighting transformer to set a supply current amount; a constant voltage extraction circuit interposed in the current line so as to be connected in series with the lighting transformer; An electric load using a circuit as a constant voltage power supply; and a switch circuit interposed in an energizing path connected in parallel to the plurality of lighting transformers to conduct and cut off the energizing path. Thus, the conduction angle of the output current of the constant current power supply circuit is fixedly controlled to be constant, and the O
A power supply control device for an airport lighting device, wherein N / OFF is controlled according to a set illuminance of the lighting light.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP08361493A JP3265489B2 (en) | 1993-04-09 | 1993-04-09 | Airport lighting power supply control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP08361493A JP3265489B2 (en) | 1993-04-09 | 1993-04-09 | Airport lighting power supply control device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH06303724A JPH06303724A (en) | 1994-10-28 |
JP3265489B2 true JP3265489B2 (en) | 2002-03-11 |
Family
ID=13807370
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP08361493A Expired - Fee Related JP3265489B2 (en) | 1993-04-09 | 1993-04-09 | Airport lighting power supply control device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3265489B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105682326A (en) * | 2016-03-21 | 2016-06-15 | 湖南理工学院 | Voltage transformation type high-voltage sodium lamp power saver |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006139755A (en) * | 2004-10-15 | 2006-06-01 | Toshiba Lighting & Technology Corp | Led type marker light lighting device and marker light system |
-
1993
- 1993-04-09 JP JP08361493A patent/JP3265489B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105682326A (en) * | 2016-03-21 | 2016-06-15 | 湖南理工学院 | Voltage transformation type high-voltage sodium lamp power saver |
Also Published As
Publication number | Publication date |
---|---|
JPH06303724A (en) | 1994-10-28 |
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