JPS5831208Y2 - Dengen Sochi - Google Patents
Dengen SochiInfo
- Publication number
- JPS5831208Y2 JPS5831208Y2 JP10756774U JP10756774U JPS5831208Y2 JP S5831208 Y2 JPS5831208 Y2 JP S5831208Y2 JP 10756774 U JP10756774 U JP 10756774U JP 10756774 U JP10756774 U JP 10756774U JP S5831208 Y2 JPS5831208 Y2 JP S5831208Y2
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- load
- resistor
- voltage
- constant voltage
- 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
Links
Landscapes
- Fire-Detection Mechanisms (AREA)
- Fire Alarms (AREA)
- Continuous-Control Power Sources That Use Transistors (AREA)
Description
【考案の詳細な説明】
本考案は火災報知機等に好適な電源装置に関するもので
あり、とくに電源の容量を小さくできかつ電力損失を小
さくなし得る電源装置を提供するものである。[Detailed Description of the Invention] The present invention relates to a power supply device suitable for fire alarms, etc., and particularly provides a power supply device that can reduce the capacity of the power supply and reduce power loss.
一般に火災報知機等の如く負荷インピーダンスが大幅に
変化する負荷へ電源電流を供給するものとして第１図に
示すものが知られている。In general, the device shown in FIG. 1 is known as a device that supplies power supply current to a load such as a fire alarm, where the load impedance changes significantly.
第１図にち・いて、１は交流電源であり、該交流電源か
ら電源トランス２及び整流回路３を経て給電線４ａｔ４
ｂにより負荷５に電源電流が供給される。In FIG. 1, 1 is an AC power supply, and from the AC power supply, a power supply line 4at4 is passed through a power transformer 2 and a rectifier circuit 3.
A power supply current is supplied to the load 5 by b.
この負荷５は上記給電線４ａｔ４ｂに対して並列接続さ
れた複数個の感知器６ａ 、６ｂ・・・を有する。This load 5 has a plurality of sensors 6a, 6b, . . . connected in parallel to the feeder line 4at4b.
これらの感知器６ａ、６ｂ・・・は常時は高インピーダ
ンスであり、動作時には低インピーダンスとなる一種の
スイッチング作用を持った素子であり、上記感知器６ａ
、６ｂ・・・にはそれぞれ各別の表示灯７ａ 、 ７
ｂ・・・が直列に接続され動作した感知器を個別にも表
示する。These sensors 6a, 6b, .
, 6b... have separate indicator lights 7a, 7, respectively.
b... are connected in series and actuated sensors are also displayed individually.
８は給電線４ａに直列に挿入されたリレーであり、上記
感知器６ａ 、６ｂ・・・の作動を検出する。A relay 8 is inserted in series with the power supply line 4a, and detects the operation of the sensors 6a, 6b, . . . .
９ば終端抵抗である。このような装置では、表示灯７ａ
、７ｂ、・・として低電圧のものを用いると、小型のラ
ンプを使用でき、感知器６ａ 、６ｂ・・・への組込み
が容易になるばかりではなく、白熱電球の場合にはフィ
ラメントが小さいため振動による断線が少くなるという
メリットがあり、このため表示灯７ａｔ７ｂ・・・には
直列にそれぞれ抵抗１０ａｔ１０ｂ・・・を挿入するの
が普通である。9 is a terminating resistor. In such a device, the indicator light 7a
, 7b, . . . , it is possible to use a small lamp, which not only makes it easier to incorporate into the sensors 6a, 6b, . There is an advantage that disconnection due to vibration is reduced, and for this reason, it is common to insert resistors 10at10b, . . . in series with the indicator lights 7at7b, .
又表示灯７ａ、７ｂ・・・とじて発光ダイオードを用い
るときにも感知器６ａ。Also, the sensor 6a is used when the indicator lights 7a, 7b... are closed and light emitting diodes are used.
６ｂ・・・の定格電圧よりも発光ダイオードの定格電圧
が低いので、上記した抵抗１０ａ、１０ｂ・・・を挿入
する必要がある。Since the rated voltage of the light emitting diode is lower than the rated voltage of the light emitting diode 6b..., it is necessary to insert the above-mentioned resistors 10a, 10b....
上記のように抵抗１０ａ ｔ １０ｂ・・・を挿入する
と、該抵抗の発熱により感知器の回路素子に悪影響を及
ぼすと共に、感知器６ａ、６ｂ・・・ごとに抵抗１０ａ
、１０ｂ・・・が必要でありコストが高くなるという
欠点があり、又感知器６ａｔ６ｂ・・・のうち多くのも
のが動作すると電源の容量が足りなくなり、表示灯？
ａ 、７ ｂ・・・に充分な電源電流が供給されず、電
源電圧の変動を・生じ、かつ表示灯７ａ、７ｂ・・・の
発光が弱くなり点灯しているか否かの区別ができなくな
るという欠点があった。If the resistors 10a, 10b... are inserted as described above, the heat generated by the resistors will have an adverse effect on the circuit elements of the sensor.
, 10b... are required, which increases the cost.Also, if many of the sensors 6at, 6b... are activated, the power supply capacity will be insufficient, and the indicator light?
Sufficient power supply current is not supplied to a, 7b..., causing fluctuations in the power supply voltage, and the light emission of the indicator lights 7a, 7b... becomes weaker, making it impossible to distinguish whether they are lit or not. There was a drawback.
このために電源の容量を大きくするとコストが高くなり
、又常に定電圧の電流を供給する電源を備えるとコスト
が高くなると共に常時の電力損失が大きくなるという欠
点を生ずる。For this reason, increasing the capacity of the power supply increases the cost, and providing a power supply that constantly supplies current at a constant voltage increases the cost and increases the power loss at all times.
本考案は上記した欠点を除去するものであり、複数個の
感知器には抵抗を介して電源電流を供給し、かつ感知器
の動作時には自動的に定電圧回路を介した電源電流をも
供給し得るようにしたものである。The present invention eliminates the above-mentioned drawbacks by supplying power supply current to multiple sensors through resistors, and automatically supplying power supply current through a constant voltage circuit when the sensors are activated. It was made so that it could be done.
以下に、本考案の一実施例を第２図について説明する。An embodiment of the present invention will be described below with reference to FIG.
第２図において、１１ａ、１１ｂは電源より負荷１２に
電源電流を供給する給電線であり、給電線１１ａには直
列に火災、断線検出用の抵抗１３が接続され、かつ、ス
イッチング素子であるトランジスタ１９のエミッタ・コ
レクタ間を該抵抗１３に並列に設け、給電線１１ａ、１
ｉｂ間に設けられた抵抗２２と定電圧素子であるツェナ
ーダイオード２１との直列回路の接続点に上記トランジ
スタ１９のベースを接続してなる定電圧回路１４が設け
られている。In FIG. 2, reference numerals 11a and 11b are power supply lines that supply power supply current from the power supply to the load 12, and a resistor 13 for detecting fire or disconnection is connected in series to the power supply line 11a, and a transistor as a switching element is connected in series to the power supply line 11a. The emitter-collector of 19 is provided in parallel with the resistor 13, and the power supply lines 11a, 1
A constant voltage circuit 14 is provided in which the base of the transistor 19 is connected to a connection point of a series circuit between a resistor 22 provided between ib and a Zener diode 21 which is a constant voltage element.
上記負荷１２は上記給電線１１ａｔｌｌｂと並列に接続
された煙感知器１５ａ 、 １５ｂ−・・及び熱式感知
器１６ａ 、 １６ｂ・・・と、上記煙感知器１５ａ、
１５ｂ・・・とそれぞれ直列に接続された表示灯１７ａ
、１７ｂ・・・と、終端抵抗１８とを含むものである。The load 12 includes smoke detectors 15a, 15b, and thermal sensors 16a, 16b, which are connected in parallel with the power supply line 11atllb, and the smoke detector 15a,
Indicator lights 17a connected in series with 15b...
, 17b... and a terminating resistor 18.
尚、ツェナーダイオード２１の電圧は、煙感知器１５ａ
、１５ｂ・・・等が動作しない常時の高インピーダンス
時の負荷１２と抵抗１３との分割点の電圧よりも低く、
煙感知器１５ａ、１５ｂ・・・のいずれかが動作したと
きの低インピーダンス時の負荷１２と抵抗１３との分割
点の電圧よりも高く設定しである。Note that the voltage of the Zener diode 21 is the same as that of the smoke detector 15a.
, 15b, etc. are lower than the voltage at the dividing point between the load 12 and the resistor 13 during the normal high impedance state in which they do not operate.
The voltage is set higher than the voltage at the dividing point between the load 12 and the resistor 13 at low impedance when any of the smoke detectors 15a, 15b, . . . operates.
前記した如く負荷１２が高インピーダンスとなる常時に
おいては、上記抵抗１３と負荷１２との分割点の電圧が
高く、上記定電圧回路１４のトランジスタ１９が逆バイ
アスされるため、上記電圧回路１４は動作せず、負荷１
２へは抵抗１３のみを介して電源電流が供給される。As described above, when the load 12 is always at high impedance, the voltage at the dividing point between the resistor 13 and the load 12 is high, and the transistor 19 of the constant voltage circuit 14 is reverse biased, so the voltage circuit 14 does not operate. Without, load 1
2 is supplied with power supply current only through the resistor 13.
上記煙感知器１５ａ、１５ｂ・・・のいずれかが動作し
て負荷１２が低インピーダンスとなると、抵抗１３と負
荷１２との分割点の電圧が下り、それによりトランジス
タ１９がバイアスされオンし、定電圧回路１４が動作し
て該定電圧回路１４からも負荷１２へ電源電流が供給さ
れる。When one of the smoke detectors 15a, 15b, etc. operates and the load 12 becomes low impedance, the voltage at the dividing point between the resistor 13 and the load 12 decreases, and the transistor 19 is biased and turned on, thereby stabilizing the load 12. The voltage circuit 14 operates, and power supply current is supplied from the constant voltage circuit 14 to the load 12 as well.
従って負荷１２に供給される電源電流は表示灯１７ａ。Therefore, the power supply current supplied to the load 12 is the indicator light 17a.
１７ｂ・・・の定格電圧である定電圧とすることができ
、更に煙感知器１５ａ、１５ｂ・・・のうち多数のもの
が動作しても抵抗１３のみならず定電圧回路１４を介し
て電源電流が供給されるので、表示灯１７ａ、１７ｂ・
・・の発光が弱くなることかない。17b... can be set to a constant voltage that is the rated voltage of the smoke detectors 15a, 15b..., and even if many of the smoke detectors 15a, 15b... Since current is supplied, the indicator lights 17a, 17b,
The luminescence of ... will not become weaker.
尚、第２図において、２０は抵抗であり、上記熱式感知
器１６ａ、１６ｂ・・・が動作したときの保護用のもの
である。In FIG. 2, 20 is a resistor for protection when the thermal sensors 16a, 16b, . . . operate.
この抵抗２０に代えて定電流回路を用いることもできる
。A constant current circuit can also be used in place of this resistor 20.
父上記煙感知器１５ａ。１５ｂ・・・のスイッチング素
子としてＳＣＲを用いる場合には該ＳＣＲが定電圧回路
１４を介した電圧によってもホールドされるようにホー
ルド電圧を選定する。Smoke detector 15a above. When using an SCR as the switching element of 15b..., the hold voltage is selected so that the SCR is also held by the voltage via the constant voltage circuit 14.
本考案は叙上のようであり、簡単な構成により電源の容
量を小さくでき、しかも電力損失を小さくなし得るもの
である。As described above, the present invention can reduce the capacity of the power supply with a simple configuration, and furthermore, can reduce power loss.
第１図は従来例を示す回路図、第２図は本考案の一実施
例を示す回路図である。
１１ａ、１１ｂ・・・給電線、１２・・・負荷、１３・
・・抵抗、１４・・・定電圧回路。FIG. 1 is a circuit diagram showing a conventional example, and FIG. 2 is a circuit diagram showing an embodiment of the present invention. 11a, 11b...Power supply line, 12...Load, 13.
...Resistance, 14... Constant voltage circuit.
Claims (1)
負荷に一対の給電線により電源電流を供給する電源装置
に釦いて、 該給電線の一方に直列に抵抗を挿入し、上記負荷が高イ
ンピーダンスから低インピーダンスに切換ったときに生
じる該抵抗の電圧変化によりオンするスイッチング素子
を上記抵抗と並列に接続し、該スイッチング素子と他方
の該給電線間に定電圧素子を接続し、 上記負荷が高インピーダンスのときには上記抵抗のみを
介して上記負荷に電源電流を供給すると共に上記負荷が
低インピーダンスのときには上記スイッチング素子を介
して上記負荷に定電圧を供給するように構成したことを
特徴とする電源装置。[Claim for Utility Model Registration] A power supply device that supplies power current through a pair of power supply lines to a load whose impedance is selectively switched between high and low impedance values, and a resistor connected in series with one of the power supply lines. A switching element that is inserted and turned on by a voltage change of the resistor that occurs when the load switches from high impedance to low impedance is connected in parallel with the resistor, and a constant voltage is applied between the switching element and the other power supply line. the elements are connected, and when the load has a high impedance, a power supply current is supplied to the load through the resistor only, and when the load has a low impedance, a constant voltage is supplied to the load through the switching element. A power supply device characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10756774U JPS5831208Y2 (en) | 1974-09-09 | 1974-09-09 | Dengen Sochi |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10756774U JPS5831208Y2 (en) | 1974-09-09 | 1974-09-09 | Dengen Sochi |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5135632U JPS5135632U (en) | 1976-03-17 |
| JPS5831208Y2 true JPS5831208Y2 (en) | 1983-07-11 |
Family
ID=28325622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10756774U Expired JPS5831208Y2 (en) | 1974-09-09 | 1974-09-09 | Dengen Sochi |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5831208Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5512359A (en) * | 1978-07-10 | 1980-01-28 | Mitsubishi Electric Corp | Air conditioner |
| JPS584950U (en) * | 1981-07-01 | 1983-01-13 | 株式会社柳澤製作所 | Freeze prevention device for water heaters |
| JPS5855254U (en) * | 1981-10-09 | 1983-04-14 | 富士重工業株式会社 | Outdoor unit in heating and cooling equipment |
-
1974
- 1974-09-09 JP JP10756774U patent/JPS5831208Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5135632U (en) | 1976-03-17 |
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