JP3243647B2 - Power supply for broadcast equipment - Google Patents
Power supply for broadcast equipmentInfo
- Publication number
- JP3243647B2 JP3243647B2 JP32276091A JP32276091A JP3243647B2 JP 3243647 B2 JP3243647 B2 JP 3243647B2 JP 32276091 A JP32276091 A JP 32276091A JP 32276091 A JP32276091 A JP 32276091A JP 3243647 B2 JP3243647 B2 JP 3243647B2
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- power supply
- stabilized
- output
- output 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 - Fee Related
Links
Landscapes
- Direct Current Feeding And Distribution (AREA)
- Rectifiers (AREA)
- Dc-Dc Converters (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、放送機用電源装置に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply for a broadcast machine.
【０００２】[0002]
【従来の技術】従来の放送機用電源装置では、放送機の
回路固体化に伴ない、スイッチング方式の直流安定化電
源が用いられ、±２０％以上にもおよぶ、電源電圧変動
に対応する必要があり、図２に例示するように、冗長系
のトランジスタ増幅器３−１および３−２の両出力信号
を合成器４にて合成し送信する場合、各系に自動電圧調
整装置（ＡＶＲ）７−１および７−２を使用し電源供給
している。2. Description of the Related Art In a conventional power supply device for a broadcaster, a switching type DC stabilized power supply is used in accordance with the solidification of the circuit of the broadcaster, and it is necessary to cope with a power supply voltage fluctuation of ± 20% or more. As shown in FIG. 2, when both output signals of the redundant transistor amplifiers 3-1 and 3-2 are combined and transmitted by the combiner 4, an automatic voltage regulator (AVR) 7 is provided for each system. -1 and 7-2 are used to supply power.
【０００３】[0003]
【発明が解決しようとする課題】この従来の放送機用電
源装置では、数キロワット以上の大電力放送器の場合に
は、自動電圧調整装置（ＡＶＲ）の電力容量が大きくな
り、大形化し高価格化するという問題点がある。In this conventional power supply device for a broadcasting device, in the case of a high power broadcasting device of several kilowatts or more, the power capacity of the automatic voltage regulator (AVR) becomes large, and the size becomes large. There is a problem of price.
【０００４】[0004]
【課題を解決するための手段】本発明の電源装置は、同
一入力電圧から複数の相異なる出力電圧を得る電源トラ
ンスと、各前記出力電圧から安定化直流電流を得る複数
の直流安定化電源と、各前記出力電圧の高低に応じて各
前記直流安定化電源の動作をオン・オフする複数の制御
手段とを備えている。According to the present invention, there is provided a power supply apparatus comprising: a power supply transformer for obtaining a plurality of different output voltages from the same input voltage; and a plurality of stabilized DC power supplies for obtaining a stabilized DC current from each of the output voltages. And a plurality of control means for turning on / off the operation of each of the stabilized DC power supplies according to the level of each of the output voltages.
【０００５】[0005]
【実施例】次に本発明について図面を参照して説明す
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.
【０００６】図１は本発明の一実施例の系統図を示す。
同図において、電源トランス１の一次側端子１１に規定
電源電圧が入力された時、その二次側端子１２には直流
安定化電源２−１の規定電源電圧より高い電圧が、また
二次側端子１３には直流安定化電源２−２の規定電源電
圧より低い電圧が得られるように、電源トランス１の巻
線比を設定してある。二次側端子１２，１３にはそれぞ
れ、直流安定化電源２−１，２−２が接続され、その出
力電圧がトランジスタ増幅器３−１，３−２に電源供給
される。これらのトランジスタ増幅器３−１，３−２の
出力は合成器４で合成され、放送機の定格出力となる。FIG. 1 shows a system diagram of an embodiment of the present invention.
In the figure, when a specified power supply voltage is input to the primary terminal 11 of the power transformer 1, a voltage higher than the specified power supply voltage of the stabilized DC power supply 2-1 is applied to its secondary terminal 12, and The turns ratio of the power transformer 1 is set at the terminal 13 so that a voltage lower than the specified power supply voltage of the stabilized DC power supply 2-2 is obtained. DC stabilized power supplies 2-1 and 2-2 are connected to the secondary terminals 12 and 13, respectively, and the output voltages thereof are supplied to the transistor amplifiers 3-1 and 3-2. The outputs of the transistor amplifiers 3-1 and 3-2 are combined by the combiner 4 and become the rated output of the broadcast machine.
【０００７】電圧検知回路５−１，５−２はそれぞれ電
源トランス１の二次側端子１２，１３の電圧を検知し、
その検知信号は制御回路６−１，６−２に入力されて直
流安定化電源２−１，２−２のオン・オフ制御を行な
う。Voltage detection circuits 5-1 and 5-2 detect the voltages of the secondary terminals 12 and 13 of the power transformer 1, respectively.
The detection signals are input to the control circuits 6-1 and 6-2 to perform on / off control of the stabilized DC power supplies 2-1 and 2-2.
【０００８】電源トランス１に規定電源電圧変動範囲内
の電源電圧が供給された場合には、直流安定化電源２−
１，２−２の双方とも正常に動作し、トランジスタ増幅
器３−１，３−２の両出力が合成されて、放送機出力は
定格出力となる。When a power supply voltage within a specified power supply voltage variation range is supplied to the power supply transformer 1, a stabilized DC power supply
Both 1 and 2-2 operate normally, the outputs of the transistor amplifiers 3-1 and 3-2 are combined, and the output of the broadcast device becomes the rated output.
【０００９】電源トランス１に規定電源電圧変動範囲を
超える高い電源電圧が供給された場合には、電源トラン
ス１の２次側端子１２に接続されている電源検知回路５
−１と制御回路６−１とが直流安定化電源２−１の動作
をオフする。この場合、電源トランス１の２次側端子１
３から電源電圧が供給される直流安定化電源２−２に接
続されたトランジスタ電力増幅器３−２の出力のみが放
送機出力となるので、合成出力が減力されるが、放送機
出力は断とならない。また、低い電源電圧が供給された
場合には、電源トランス１の２次側端子１３に接続され
ている電源検知回路５−２と制御回路６−２とが直流安
定化電源２−２の動作をオフするが、２次側端子１２か
ら電源電圧が供給される直流安定化電源２−１，トラン
ジスタ電力増幅器３−１は正常に動作するので、合成出
力は減力されるが、放送を中断することなく継続させ得
る。When a high power supply voltage exceeding the specified power supply voltage fluctuation range is supplied to the power supply transformer 1, the power supply detection circuit 5 connected to the secondary terminal 12 of the power supply transformer 1
-1 and the control circuit 6-1 turn off the operation of the stabilized DC power supply 2-1. In this case, the secondary terminal 1 of the power transformer 1
3, only the output of the transistor power amplifier 3-2 connected to the stabilized DC power supply 2-2 to which the power supply voltage is supplied becomes the broadcast output, so that the combined output is reduced, but the broadcast output is cut off. Does not. When a low power supply voltage is supplied, the power detection circuit 5-2 and the control circuit 6-2 connected to the secondary terminal 13 of the power transformer 1 operate the DC stabilized power supply 2-2. However, since the DC stabilized power supply 2-1 supplied with the power supply voltage from the secondary terminal 12 and the transistor power amplifier 3-1 operate normally, the combined output is reduced, but the broadcast is interrupted. It can be continued without doing.
【００１０】[0010]
【発明の効果】以上説明したように本発明によれば、入
力の電源電圧を検知して複数個の直流安定化電源をオ
ン，オフ動作を行なうことにより、電源電圧変動が大き
い場合にも従来の高価な自動電圧調整装置（ＡＶＲ）を
使用せずに済み、低価格の放送機システムを実現でき
る。As described above, according to the present invention, by detecting the input power supply voltage and turning on and off a plurality of DC stabilized power supplies, even if the power supply voltage fluctuates greatly, It is not necessary to use an expensive automatic voltage regulator (AVR), and a low-priced broadcast system can be realized.
【図１】本発明の実施例のブロック図。FIG. 1 is a block diagram of an embodiment of the present invention.
【図２】従来装置のブロック図。FIG. 2 is a block diagram of a conventional device.
１ 電源トランス １１ 一次側端子 １２，１３ 二次側端子 ２−１，２−２ 直流安定化電源 ３−１，３−２ トランジスタ増幅器 ４ 出力合成器 ５−１，５−２ 電源検知回路 ６−１，６−２ 制御回路 DESCRIPTION OF SYMBOLS 1 Power transformer 11 Primary terminal 12, 13 Secondary terminal 2-1, 2-2 DC stabilized power supply 3-1 and 3-2 Transistor amplifier 4 Output synthesizer 5-1 and 5-2 Power supply detection circuit 6 1,6-2 control circuit
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H02M 7/23 H02J 1/00 H02M 3/28 H02M 7/17 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) H02M 7/23 H02J 1/00 H02M 3/28 H02M 7/17
Claims (1)
異なる出力電圧を得る電源トランスと、前記相異なる出
力電圧各々から直流電流を得る複数の直流安定化電源
と、前記複数の出力電圧各々の電圧変動を検出する複数
の電圧検知回路と、前記電圧検知回路の検知結果により
前記直流安定化電源の動作をＯＮ／ＯＦＦする複数の制
御手段と、前記複数の直流安定化電源の出力を合成する
合成手段により構成され、 最も高い出力電圧を第一の出力電圧、最も低い出力電圧
を第二の出力電圧としたとき、前記第一の出力電圧はこ
れに対応する第一の直流安定化電源の規定電圧よりも若
干低く、前記第二の出力電圧はこれに対応する第二の直
流安定化電源の規定電圧よりも若干高くなるよう設定
し、 前記第一の出力電圧が前記第一の直流安定化電源の規定
電圧より高くなった場合には、第一の直流安定化電源の
動作をＯＦＦし、前記第二の出力電圧が前記第二の直流
安定化電源の規定電圧より低くなった場合に、第二の直
流安定化電源の動作をＯＦＦすることを特徴とする電源
装置。 At least two phases from one input voltage
A power transformer for obtaining different output voltages;
Multiple stabilized DC power supplies that obtain DC current from each voltage
And a plurality of detecting voltage fluctuations of each of the plurality of output voltages.
Voltage detection circuit, and the detection result of the voltage detection circuit
A plurality of controls for turning on / off the operation of the DC stabilized power supply
Control means and the outputs of the plurality of stabilized DC power supplies
It is constituted by synthetic means, the highest output voltage first output voltage, the lowest output voltage
Is the second output voltage, the first output voltage is
Lower than the specified voltage of the first stabilized DC power supply.
Low, and the second output voltage is
Set to be slightly higher than the regulated voltage of the current stabilizing power supply
And wherein the first output voltage is defined by the first DC stabilized power supply.
If the voltage becomes higher than the
The operation is turned off, and the second output voltage is changed to the second DC voltage.
If the voltage drops below the regulated voltage, the second
Power supply characterized by turning off the operation of a current stabilized power supply
apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32276091A JP3243647B2 (en) | 1991-12-06 | 1991-12-06 | Power supply for broadcast equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32276091A JP3243647B2 (en) | 1991-12-06 | 1991-12-06 | Power supply for broadcast equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05161362A JPH05161362A (en) | 1993-06-25 |
| JP3243647B2 true JP3243647B2 (en) | 2002-01-07 |
Family
ID=18147340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32276091A Expired - Fee Related JP3243647B2 (en) | 1991-12-06 | 1991-12-06 | Power supply for broadcast equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3243647B2 (en) |
-
1991
- 1991-12-06 JP JP32276091A patent/JP3243647B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05161362A (en) | 1993-06-25 |
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