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JPS6170621A - constant voltage power supply - Google Patents

constant voltage power supply

Info

Publication number
JPS6170621A
JPS6170621A JP59192802A JP19280284A JPS6170621A JP S6170621 A JPS6170621 A JP S6170621A JP 59192802 A JP59192802 A JP 59192802A JP 19280284 A JP19280284 A JP 19280284A JP S6170621 A JPS6170621 A JP S6170621A
Authority
JP
Japan
Prior art keywords
capacitor
circuit
transistor
voltage
power supply
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
JP59192802A
Other languages
Japanese (ja)
Inventor
Sadatoshi Tabuchi
貞敏 田縁
Haruo Terai
春夫 寺井
Katsunori Zaizen
克徳 財前
Yoshitada Nakao
善忠 中尾
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 Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP59192802A priority Critical patent/JPS6170621A/en
Publication of JPS6170621A publication Critical patent/JPS6170621A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/061Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)

Abstract

PURPOSE:To prevent an IC from breaking down and deteriorating by setting the source voltage of a control circuit which needs to be backed up invariably higher than the +0.3V source voltage of a load circuit as the load on a control circuit. CONSTITUTION:The charge of a backup capacitor 33 is zero in case of a power failure right after the backup capacitor 3 begins to be charged, so the 2nd capacitor 31 supplies a current to a resistance 32 and a control circuit 35. The 1st capacitor 29, on the other hand, supplies a current to the load circuit 30. At this time, the capacity values of the 1st capacitor 29 and the 2nd capacitor 31 are set that (+0.3V terminal voltage of the 1st capacitor 29) < (terminal voltage of the 2nd capacitor 31), so the emitter voltage of the 1st transistor 28a (TR) is equal to the emitter voltage of the 2nd TR28b. Namely, (+0.3V source voltage of the load circuit 30) < (source voltage of the control circuit 35) even in case of a power failure.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、バックアップ素子を備えた定電圧電源装置に
関するものである。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a constant voltage power supply device equipped with a backup element.

従来例の構成とその問題点 従来の定電圧電源装置は第2図に示すように構成されて
いた。図において、1は商用電源、2は直流電源で、変
圧器3.整流器4.コンデンサ6により構成されている
。6は抵抗、7は定電圧ダイオード、8はトランジスタ
、9.10はコンデンサ、11は負荷回路、12はダイ
オード、13はバックアップ回路で、抵抗14.バック
アップ用コンデンサ15により構成されている。16は
制御回路である。
Conventional configuration and problems thereof A conventional constant voltage power supply device was constructed as shown in FIG. In the figure, 1 is a commercial power supply, 2 is a DC power supply, and a transformer 3. Rectifier 4. It is composed of a capacitor 6. 6 is a resistor, 7 is a constant voltage diode, 8 is a transistor, 9.10 is a capacitor, 11 is a load circuit, 12 is a diode, 13 is a backup circuit, and resistor 14. It is composed of a backup capacitor 15. 16 is a control circuit.

以上のように構成された従来例の定電圧電源装  置に
おいて、以下、その動作について説明する。
The operation of the conventional constant voltage power supply device configured as described above will be described below.

まず商用電源1は変圧器3により変圧され、整流S4に
より整流され、かつコンデンサ5によす平滑されて直流
電圧となり、抵抗6.定電圧ダイオ−ド7およびトラン
ジスタ8により定電圧化され、定電圧となる。コンデン
サ9はリップル吸収用で、負荷回路11とともに、トラ
ンジスタ8のエミッタ電極から電流の供給を受けている
。一方、コンデンサ10はリップル吸収用であり、制御
回路16はバックアップを必要とする回路である。バッ
クアップ用コンデンサ15は通常は、ダイオード12.
抵抗14を介してトランジスタ8のエミッタ電極から電
流の供給を受けているが、停電時には前記バックアップ
用コンデンサ16に充電された電流を抵抗14を介して
制御回路16に電流を供給する。なお、負荷回路11は
制御回路16の信号を受けて動作する回路である。また
、ダイオード12は、停電時に、バックアップ用コンデ
ンサ16−の電荷が負荷回路11側へ流れるのを防止す
る役目をしている。
First, a commercial power source 1 is transformed by a transformer 3, rectified by a rectifier S4, and smoothed by a capacitor 5 to become a DC voltage, and a resistor 6. The voltage is made constant by the constant voltage diode 7 and the transistor 8, resulting in a constant voltage. The capacitor 9 is for absorbing ripples, and is supplied with current from the emitter electrode of the transistor 8 together with the load circuit 11 . On the other hand, the capacitor 10 is for ripple absorption, and the control circuit 16 is a circuit that requires backup. The backup capacitor 15 is usually a diode 12.
Current is supplied from the emitter electrode of the transistor 8 via the resistor 14, and in the event of a power outage, the current charged in the backup capacitor 16 is supplied to the control circuit 16 via the resistor 14. Note that the load circuit 11 is a circuit that operates upon receiving a signal from the control circuit 16. Further, the diode 12 serves to prevent the charge in the backup capacitor 16- from flowing to the load circuit 11 side during a power outage.

1        しかしながら、上記従来の構成にお
いては、通常、負荷回路11の電源電圧−制御回路16
の電源電圧キo、eV(ダイオード12の順方向電圧降
下)となる。ところが、制御回路1eにICを使用し、
でいる場合、ICの入出力端子の耐圧は一般には、電源
電圧+0.3vしたか保証されていないので、このよう
な使い方をすれば、制御回路16のICが破壊する等の
問題があった。
1 However, in the above conventional configuration, the power supply voltage of the load circuit 11 - the control circuit 16 is usually
The power supply voltage is k o, eV (forward voltage drop of the diode 12). However, if an IC is used in the control circuit 1e,
In this case, the withstand voltage of the IC's input/output terminal is generally not guaranteed to exceed the power supply voltage +0.3V, so if it was used in this way, there would be problems such as destruction of the IC in the control circuit 16. .

発明の目的 本発明は上記従来の欠点に鑑み、バンクアップを必要と
する制御回路の入出力端子電圧を、電源電圧−←0,3
 V以下に抑えることができる定電圧電源装置を提供す
ることを目的とするものである。
Purpose of the Invention In view of the above-mentioned drawbacks of the conventional art, the present invention has been made to reduce the input/output terminal voltage of a control circuit that requires bank up by changing the power supply voltage -←0,3.
It is an object of the present invention to provide a constant voltage power supply device that can suppress the voltage to V or less.

発明の構成 上記目的を達成するために本発明の定電圧電源装置は、
商用電源を整流、平滑した直流電源に、抵抗と定電圧ダ
イオードの直列回路を並列接続し、前記直流電源と抵抗
の接続点に、第1のトランジスタと第2のトランジスタ
のコレクタ電極をそれぞれ接続し、前記抵抗と定電圧ダ
イオードの接続点に、第1のトランジスタと第2のトラ
ンジスタのベース電極をそれぞれ接続し、前記第1のト
ランジスタのエミッタ電極に第1のコンデンサと負荷回
路(バックアップを必要としない回路)の並列回路を接
続し、前記第2のトランジスタのエミッタ電極に第2の
コンデンサと制御回路(バックアップを必要とする回路
)とバックアップ回路の並列回路を接続して構成され、
いかなるタイミングにおいても、(第1のコンデンサの
端子電圧子0.3 V ) < (第2のコンデンサの
端子電圧)となるように第1のコンデンサと第2のコン
デンサの容量値を設定したもので、この構成によって、
制御回路にマイコン等のICが使用されている場合でも
、ICの入出力端子電圧は電源電圧+0.37以下とな
るため、ICが破壊されるのを未然に防止することがで
きるものである。
Structure of the Invention In order to achieve the above object, the constant voltage power supply device of the present invention has the following features:
A series circuit of a resistor and a constant voltage diode is connected in parallel to a DC power source obtained by rectifying and smoothing a commercial power source, and the collector electrodes of the first transistor and the second transistor are connected to the connection point of the DC power source and the resistor, respectively. , the base electrodes of the first transistor and the second transistor are connected to the connection point between the resistor and the voltage regulator diode, respectively, and the emitter electrode of the first transistor is connected to a first capacitor and a load circuit (requires backup). A parallel circuit of a second capacitor, a control circuit (a circuit requiring backup), and a backup circuit is connected to the emitter electrode of the second transistor.
The capacitance values of the first capacitor and the second capacitor are set so that (terminal voltage of the first capacitor 0.3 V) < (terminal voltage of the second capacitor) at any timing. , with this configuration,
Even when an IC such as a microcomputer is used in the control circuit, the input/output terminal voltage of the IC is less than the power supply voltage +0.37, so it is possible to prevent the IC from being destroyed.

実施例の説明 以下、本発明の一実施例を第1図にもとづいて説明する
。第1図において、21は商用電源で、この商用電源2
1は、変圧器22.整流器23゜コンデンサ24により
構成される直流電源26で整流、平滑される。26.2
7は直列接続された抵抗と定電圧ダイオードで、この直
列回路は前記直流電源25に並列に接続されている。2
82Lは前記直流電源26と抵抗26の接続点にコレク
タ電極を接続した第1のトランジスタで、この第1のト
ランジスタ28aのベース電極は前記抵抗26と定電圧
ダイオード27の接続点に接続され、かつエミッタ電極
には第1のコンデンサ29と負荷回路30(バックアン
プを必要としない回路)の並列回路を接続している。2
8bは前記直流電源26と抵抗26の接続点にコレクタ
電極を接続した第2のトランジスタで、この第2のトラ
ンジス428bのベース電極は前記抵抗26と定電圧グ
イ;t−)”2717)接続点に接続され、かつエミッ
タ電極には第2のコンデンサ31と、抵抗32およびバ
ックアップ用コンデンサ33により構成されるバックア
ップ回路34と、制御回路35(バックアップを必要と
する回路)の並列回路を接続している。また前記第1の
コンデンサ29と、第2のコンデンサ31の容量値は、
いがなるタイミングにおいても、(第1のコンデンサ2
9の端子電圧+0.3 v ) < (第2のコンデン
サ31の端子電圧)となるように設定している。
DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. In Figure 1, 21 is a commercial power supply, and this commercial power supply 2
1 is a transformer 22. It is rectified and smoothed by a DC power supply 26 composed of a rectifier 23 and a capacitor 24. 26.2
7 is a resistor and a constant voltage diode connected in series, and this series circuit is connected in parallel to the DC power supply 25. 2
82L is a first transistor whose collector electrode is connected to the connection point between the DC power supply 26 and the resistor 26; the base electrode of the first transistor 28a is connected to the connection point between the resistor 26 and the voltage regulator diode 27; A parallel circuit of a first capacitor 29 and a load circuit 30 (a circuit that does not require a back amplifier) is connected to the emitter electrode. 2
8b is a second transistor whose collector electrode is connected to the connection point between the DC power supply 26 and the resistor 26, and the base electrode of this second transistor 428b is the connection point between the resistor 26 and the constant voltage. A parallel circuit consisting of a second capacitor 31, a backup circuit 34 composed of a resistor 32 and a backup capacitor 33, and a control circuit 35 (a circuit requiring backup) is connected to the emitter electrode. The capacitance values of the first capacitor 29 and the second capacitor 31 are as follows.
(first capacitor 2
9 + 0.3 v) < (terminal voltage of second capacitor 31).

以上のように構成された定電圧電源装置において、次に
その動作について説明する。
Next, the operation of the constant voltage power supply device configured as described above will be explained.

商用電源21は、直流電源2已により直流電圧となり、
かつ抵抗26.定電圧ダイオード27により固定電圧化
され、第1のトランジスタ28&により増巾されて負荷
回路30の電源となり、さらに第2のトランジスタ28
bにより増巾されて制御回路36の電源となる。バック
アップ用コンデンサ33は、通常は抵抗32を介して第
2のトランジスタ28bのエミッタ電極から電流の供給
を受けているが、停電時には抵抗32を介して制御回路
36に電流を供給する。なお、バックアップ用コンデン
サ33に充電が開始された直後の停電においては、バッ
クアンプ用コンデンサ33の電荷は零であるため、抵抗
32および制御回路35への電流供給は第2のコンデン
サ31が行な′1     う。一方、負荷回路3oへ
の電流供給は第1のコンデンサ29が行なう。この時、
(第1のコンデンサ29の端子電圧+0.31 ) <
 (第2のコンデンサ31の端子電圧)となるように第
1のコンデンサ29および第2のコンデンサ31の容量
値が設定されているため、商用電源21が印加されてい
る時には、直流電源26.抵抗26.定電圧ダイオード
27によって定電圧化された電圧が第1のトランジスタ
28&と第2のトランジスタ28b    ゛のベース
電極に加わることになり、したがって第1のトランジス
タ281Lのエミッタ電圧と第2のトランジスタ28b
のエミッタ電圧は一致する。
The commercial power supply 21 becomes a DC voltage due to two DC power supplies,
and resistance 26. The voltage is fixed by the constant voltage diode 27, amplified by the first transistor 28& to become a power source for the load circuit 30, and further the second transistor 28
b, and becomes the power source for the control circuit 36. The backup capacitor 33 normally receives current from the emitter electrode of the second transistor 28b via the resistor 32, but supplies current to the control circuit 36 via the resistor 32 during a power outage. Note that in a power outage immediately after charging of the backup capacitor 33 starts, the charge of the backup amplifier capacitor 33 is zero, so the second capacitor 31 supplies current to the resistor 32 and the control circuit 35. '1 Yeah. On the other hand, the first capacitor 29 supplies current to the load circuit 3o. At this time,
(Terminal voltage of first capacitor 29 +0.31) <
(terminal voltage of the second capacitor 31), the capacitance values of the first capacitor 29 and the second capacitor 31 are set so that when the commercial power supply 21 is applied, the DC power supply 26. Resistance 26. The voltage regulated by the constant voltage diode 27 is applied to the base electrodes of the first transistor 28& and the second transistor 28b, so that the emitter voltage of the first transistor 281L and the second transistor 28b are
The emitter voltages of are matched.

すなわち、負荷回路3oの電源電圧=制御回路35の電
源電圧となり、一方、停電したときにも、(負荷回路3
0の電源電圧+0.3 V ) < (制御回路36の
電源電圧)となるものである。
In other words, the power supply voltage of the load circuit 3o = the power supply voltage of the control circuit 35, and on the other hand, even in the event of a power outage, (the load circuit 3o
0 power supply voltage +0.3 V) < (power supply voltage of control circuit 36).

発明の効果 以上のように本発明によれば、バックアップを必要とす
る制御回路の電源電圧を制御回路の負荷となる負荷回路
の電源電圧+0.3vよりも常に高く設定することがで
きるため、制御回路にマイコン等のICを使用している
場合にも、ICの人出防止することができるとともに、
制御回路と負荷回路の電源電圧が等しいために回路の接
続が容易となる等、すぐれた効果を奏するものである。
Effects of the Invention As described above, according to the present invention, the power supply voltage of the control circuit that requires backup can always be set higher than the power supply voltage +0.3V of the load circuit that is the load of the control circuit. Even if an IC such as a microcomputer is used in the circuit, it is possible to prevent the IC from being crowded, and
Since the power supply voltages of the control circuit and the load circuit are equal, the circuits can be easily connected, and other excellent effects are achieved.

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

第1図は本発明の一実施例を示す定電圧電源装置の回路
図、第2図は従来の定電圧電源装置を示す回路図である
。 21・・・・・・商用電源、25・・・・・・直流電源
、26・・・・・・抵抗、27・・・・・・定電圧ダイ
オード、28ト・・・・・第1のトランジスタ、28b
・・・・・・第2のトランジスタ、29・・・・・・第
1のコンデンサ、30町・・負荷回路、31・・・・・
・第2のコンデンサ、34・・・・・・バックアップ回
路、36・・・・・・制御回路。 代理人の氏名 弁理士 中 尾 敏 男 はが1名第1
FIG. 1 is a circuit diagram of a constant voltage power supply device showing an embodiment of the present invention, and FIG. 2 is a circuit diagram showing a conventional constant voltage power supply device. 21... Commercial power supply, 25... DC power supply, 26... Resistor, 27... Constant voltage diode, 28 T... First Transistor, 28b
...Second transistor, 29...First capacitor, 30...Load circuit, 31...
- Second capacitor, 34... Backup circuit, 36... Control circuit. Name of agent: Patent attorney Toshio Nakao (1st person)
figure

Claims (1)

【特許請求の範囲】[Claims] 商用電源を整流、平滑した直流電源に、抵抗と定電圧ダ
イオードの直列回路を並列接続し、前記直流電源と抵抗
の接続点に、第1のトランジスタと第2のトランジスタ
のコレクタ電極をそれぞれ接続し、前記抵抗と定電圧ダ
イオードの接続点に、第1のトランジスタと第2のトラ
ンジスタのベース電極をそれぞれ接続し、前記第1のト
ランジスタのエミッタ電極に第1のコンデンサと負荷回
路(バックアップを必要としない回路)の並列回路を接
続し、前記第2のトランジスタのエミッタ電極に第2の
コンデンサと制御回路(バックアップを必要とする回路
)とバックアップ回路の並列回路を接続して構成され、
いかなるタイミングにおいても、(第1のコンデンサの
端子電圧+0.3V)<(第2のコンデンサの端子電圧
)となるように第1のコンデンサと第2のコンデンサの
容量値を設定した定電圧電源装置。
A series circuit of a resistor and a constant voltage diode is connected in parallel to a DC power source obtained by rectifying and smoothing a commercial power source, and the collector electrodes of the first transistor and the second transistor are connected to the connection point of the DC power source and the resistor, respectively. , the base electrodes of the first transistor and the second transistor are connected to the connection point between the resistor and the voltage regulator diode, respectively, and the emitter electrode of the first transistor is connected to a first capacitor and a load circuit (requires backup). A parallel circuit of a second capacitor, a control circuit (a circuit requiring backup), and a backup circuit is connected to the emitter electrode of the second transistor.
A constant voltage power supply device in which the capacitance values of the first capacitor and the second capacitor are set so that (terminal voltage of the first capacitor +0.3V) <(terminal voltage of the second capacitor) at any timing. .
JP59192802A 1984-09-14 1984-09-14 constant voltage power supply Pending JPS6170621A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59192802A JPS6170621A (en) 1984-09-14 1984-09-14 constant voltage power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59192802A JPS6170621A (en) 1984-09-14 1984-09-14 constant voltage power supply

Publications (1)

Publication Number Publication Date
JPS6170621A true JPS6170621A (en) 1986-04-11

Family

ID=16297231

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59192802A Pending JPS6170621A (en) 1984-09-14 1984-09-14 constant voltage power supply

Country Status (1)

Country Link
JP (1) JPS6170621A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002044562A (en) * 2000-06-02 2002-02-08 Thomson Licensing Sa Slave regulator with super cap
WO2009104980A1 (en) * 2008-02-18 2009-08-27 Закрытое Акционерное Общество "Когерент" Power supply device for electric appliances located in an explosive medium (variants)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002044562A (en) * 2000-06-02 2002-02-08 Thomson Licensing Sa Slave regulator with super cap
WO2009104980A1 (en) * 2008-02-18 2009-08-27 Закрытое Акционерное Общество "Когерент" Power supply device for electric appliances located in an explosive medium (variants)

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