JPS6134704B2 - - Google Patents
Info
- Publication number
- JPS6134704B2 JPS6134704B2 JP54110921A JP11092179A JPS6134704B2 JP S6134704 B2 JPS6134704 B2 JP S6134704B2 JP 54110921 A JP54110921 A JP 54110921A JP 11092179 A JP11092179 A JP 11092179A JP S6134704 B2 JPS6134704 B2 JP S6134704B2
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- changeover switch
- booster
- power supply
- input
- 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
- 238000004804 winding Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P13/00—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output
- H02P13/06—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output by tap-changing; by rearranging interconnections of windings
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Details Of Television Systems (AREA)
- Amplifiers (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Description
【発明の詳細な説明】
本発明はブースタへ供給される電源電圧の差及
び平衡給電に関係なくブリツジ整流回路を使用す
ることができる装置を提供しようとするものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention seeks to provide a device in which a bridge rectifier circuit can be used regardless of the difference in power supply voltages supplied to the booster and the balanced feed.
辺地共聴，ビル陰共聴，又はビル内共聴システ
ムではある特定地域全体をテレビ再送信サービス
する目的から伝送機器、特にブースタを数台設置
しなければならない。しかしブースタを設置する
場所の環境条件から商業用100V電源で供給でき
ない場合があるため、ブースタは一般に電源
100V給電と、一括して電源ユニツトからAC30V
をケーブルに重畳して給電を受ける場合との選択
切替えができるような構成を備えているのが普通
である。この場合、従来のブースタでは、給電の
電圧の違い、又は不平衡，平衡というような形態
の違いから、ブースターの電源整流方式は
AC100V給電時は、内蔵の電源トランスを介して
ブリツジ整流回路で整流される両波整流を採用
し、入出力端子からAC30Vで給電される場合
は、内蔵の電源トランスを介さない為、単波整流
方式を採用していた。この為、入出力端子から
AC30Vが給電される場合の整流効率は非常に悪
く、しかも電源ユニツト１台から供給を受けるこ
とができるブースタ台数が、制限されてしまう。 In a remote community listening system, a building behind a building community listening system, or an in-building community listening system, it is necessary to install transmission equipment, especially several boosters, in order to provide TV retransmission service to an entire specific area. However, depending on the environmental conditions where the booster is installed, it may not be possible to supply it with a commercial 100V power supply, so the booster is generally
100V power supply and 30V AC from the power supply unit
It is common to have a configuration that allows selection and switching between receiving power by superimposing it on the cable. In this case, with conventional boosters, the power rectification method of the booster is different due to the difference in power supply voltage or the difference in form such as unbalanced or balanced.
When AC100V power is supplied, double-wave rectification is used, which is rectified by a bridge rectifier circuit via the built-in power transformer.When AC30V is supplied from the input/output terminal, single-wave rectification is used because the power is not passed through the built-in power transformer. method was adopted. For this reason, from the input/output terminal
The rectification efficiency when AC30V is supplied is very poor, and the number of boosters that can be supplied from one power supply unit is limited.
第１図は従来のブースタ電源回路を示す。端子
１ー２間からAC100V電源の供給を受け、トラン
ス３の一次側巻線に入力される。トランス３の２
次側巻線は、AC30V付近まで電圧降下させ、こ
の電圧がブリツジ整流回路４に加えられる。そし
て、ここで両波整流された電圧が電圧安定化回路
（AVR）１１にて安定化され、ブースタのRF信
号増幅部の電源として使用される。一方、
AC100Vではなく、外部の電源ユニツトから
AC30Vとして給電を受ける場合、RF信号と共に
重畳されたAC30Vは、伝送ライン１０から、ブ
ースタの入力又は出力端子８に加えられる。RF
信号は７の高域通過濾波器を介して端子９に続く
増幅部に入力される。AC30Vは、低域通過濾波
器６を介して、整流ダイオード５により単波整流
を受け、AVR回路１１に供給される。このよう
に外部からRF信号と重畳されて、同軸ケーブル
で伝送される場合、AC30V電源の伝搬形態は不
平衡でなければならずブースタ内電源トランスを
新たにもうひとつ設けない限り、単波整流方式を
採用せざるを得なかつた。 FIG. 1 shows a conventional booster power supply circuit. AC100V power is supplied between terminals 1 and 2, and is input to the primary winding of transformer 3. transformer 3 no 2
The voltage of the next winding is dropped to around 30 VAC, and this voltage is applied to the bridge rectifier circuit 4. Then, the double-wave rectified voltage is stabilized by a voltage stabilization circuit (AVR) 11 and used as a power source for the RF signal amplification section of the booster. on the other hand,
From an external power supply unit instead of AC100V
When receiving power as 30V AC, the 30V AC superimposed with the RF signal is applied from the transmission line 10 to the input or output terminal 8 of the booster. RF
The signal is input to an amplifier section following terminal 9 via a high-pass filter 7. The AC 30V passes through a low-pass filter 6, undergoes single-wave rectification by a rectifier diode 5, and is supplied to an AVR circuit 11. When superimposed with an RF signal from the outside and transmitted via a coaxial cable, the propagation form of the AC30V power must be unbalanced, and unless another power transformer is installed in the booster, single-wave rectification is required. I had no choice but to adopt.
本発明はブースタへ給電される電源電圧の差、
不平衡，平衡という給電される電源の形態の差と
は無関係にブースタ内蔵のブリツジ整流回路で両
波整流を可能にし、AC30Vで外部から給電を受
ける場合の電源ユニツトの負荷を軽くすることを
可能にしたものであり、以下本発明の実施例につ
いて図面を参照して説明する。 The present invention is based on the difference in power supply voltage supplied to the booster,
The bridge rectifier circuit with a built-in booster enables double-wave rectification regardless of the difference in the form of the power supply (unbalanced or balanced), making it possible to lighten the load on the power supply unit when receiving power from an external source at 30V AC. Embodiments of the present invention will be described below with reference to the drawings.
第２図に示す端子２０−２１間からAC100V電
源の供給を受け、それぞれ両端子間にある第１の
切替スイツチ２６，第２の切替スイツチ２７を介
して電源トランス２８の一次側に接続される。ス
イツチ２６，２７のAC100V給電を受ける端子の
反対側の固定端子２２，２３は２２がアース、２
３が、低域通過濾波器３６を介して、ブースタ入
力又は出力端子３５に接続されるようにし、それ
ぞれ、連動で切替えるようにしている。電源トラ
ンス２８の２次側巻線の端子は、２９，３０，３
１とあり、３０は中間タツプである。端子３１を
共通とし、トランス一次側端子２４−２５間の巻
数をN1，２次側端子３０−３１間の巻線数をN2
とすると巻線比N1／N2＝１００／３０となる。２９−３
０
間の巻線数をN3とすると、N3＝N1−N2の関係が
保たれるように設定する。また２次側端子２９と
３０は第３の切替スイツチ３２を介してブリツジ
整流回路３３とそれぞれ接続されるようになつて
いる。しかも切替スイツチ３２は、前記切替スイ
ツチ２６，２７と連動するものとする。 AC100V power is supplied from between terminals 20 and 21 shown in FIG. 2, and is connected to the primary side of a power transformer 28 via a first changeover switch 26 and a second changeover switch 27 located between both terminals. . The fixed terminals 22 and 23 on the opposite side of the terminals receiving the AC100V power supply of the switches 26 and 27 have 22 connected to ground and 2
3 is connected to the booster input or output terminal 35 via a low-pass filter 36, and is switched in conjunction with each other. The terminals of the secondary winding of the power transformer 28 are connected to terminals 29, 30, and 3.
1, and 30 is the intermediate tap. The terminal 31 is common, the number of turns between the transformer primary side terminals 24 and 25 is N1 , and the number of turns between the secondary side terminals 30 and 31 is N2.
Then, the winding ratio N 1 /N 2 =100/30. 29-3
Assuming that the number of windings between 0 and 3 is N 3 , the setting is made so that the relationship N 3 =N 1 −N 2 is maintained. Further, the secondary side terminals 29 and 30 are respectively connected to a bridge rectifier circuit 33 via a third changeover switch 32. Furthermore, the changeover switch 32 is assumed to be interlocked with the changeover switches 26 and 27.
次に、この回路の動作について説明する。例え
ば、AC100V給電を受ける場合、切替スイツチ２
６，２７，３２をそれぞれ端子２０，２１，３０
側へ倒すことにより、トランスの巻線比N1／N2
＝100／30の関係からトランス２次側の端子３０
に得られる電圧は30Vとなり、これがブリツジ整
流回路３３により整流され、端子３４に続く電圧
安定化回路に入力される。次に同軸ケーブルに
RF信号と重畳されたAC30Vがブースタ入力又は
出力端子３５から低域通過濾波器３６を通過して
きた場合は、切替スイツチ２６，２７，３２を端
子２２，２３，２９側へ倒す。トランス巻線比
は、前述したように端子２４−２５間対端子２９
−３１間は、N1対N1の関係から、トランス２次
側端子２９には、AC30Vが出力される。 Next, the operation of this circuit will be explained. For example, when receiving AC100V power supply, selector switch 2
6, 27, and 32 are terminals 20, 21, and 30, respectively.
By tilting it to the side, the turns ratio of the transformer N 1 /N 2
From the relationship =100/30, terminal 30 on the secondary side of the transformer
The voltage obtained is 30V, which is rectified by the bridge rectifier circuit 33 and input to the voltage stabilizing circuit connected to the terminal 34. Next to the coaxial cable
When the AC30V superimposed on the RF signal passes through the low-pass filter 36 from the booster input or output terminal 35, the changeover switches 26, 27, and 32 are turned to the terminals 22, 23, and 29 side. As mentioned above, the transformer winding ratio is between terminals 24 and 25 versus terminal 29.
-31, AC30V is output to the transformer secondary terminal 29 due to the relationship of N1 to N1 .
以上のようにブースタ内蔵の電源トランスの一
次側入力電源の形態が平衡、電圧がAC100V入力
の場合と、入力電源の形態が不平衡、電圧が
AC30V入力の場合と共に関係なく、ブリツジ整
流回路入力電圧は、ほぼ一定になり、いずれの場
合にも、両波整流を受けることになる。従つてこ
の回路は従来のように外部給電の場合、単波整流
にすることなく、しかも単波整流用ダイオードの
省略、外部電源ユニツト内の電源トランスの負荷
の軽減を可能にすることができる。 As shown above, the primary side input power of the power transformer with a built-in booster is balanced and the voltage is 100V AC, and the input power is unbalanced and the voltage is
Regardless of the case of AC30V input, the bridge rectifier circuit input voltage will be approximately constant and will undergo double wave rectification in either case. Therefore, this circuit does not require single-wave rectification in the case of external power supply as in the conventional case, and can omit the single-wave rectifier diode and reduce the load on the power transformer in the external power supply unit.
第３図は、本発明回路をブースタ電源回路に内
蔵した場合の具体回路である。端子４５，５２は
ブースタ入力端子、出力端子である。切替スイツ
チ２７，２６が切替端子２１′−２５間、２０′−
２４間に接続されている場合は、前述通り端子２
１−２０間のAC100Vが電源トランス２８の一次
側に加わり、スイツチ３２の端子３０−３２′間
を介してブリツジ整流回路３３に入力される。次
に外部給電の場合は、スイツチ２７，２６，３２
を端子２３−２５間、２２−２４間、２９−３
２′間に切替える。そして図中では、電源ユニツ
ト４２がブースタの入力側に入つている為、入力
側からの給電を受けるためのスイツチ５０を閉じ
る。このような初期設定後、ブースタ入力端子４
５からRF信号とAC30Vが重畳された信号が入
り、この30Vの電圧はコイル４６、コンデンサ４
８で構成されている低域通過濾波器を介して、電
源トランス２８の一次側に入力される。その後の
動作は前述の通りである。ブースタ出力端子５２
側からAC30Vを給電する場合は、スイツチ５３
を閉じ、スイツチ５０を開くことによつて達成さ
れる。コイル５４，コンデンサ５５は低域通過濾
波器を構成している。また本ブースタに給電し、
しかも、入力端子４５又は出力端子５２に続く、
ブースタに給電する場合は、スイツチ５０，５３
を閉じておく。電源ユニツト４２内の電源トラン
ス１次側端子４０−４１間は、商業用AC100Vに
接続される。そして２次側巻線の一方はアースに
接続され、不平衡の状態にし、入力端子４３から
のRF信号と混合器４４によつて、AC30Vは混合
され、伝送ラインである同軸ケーブルに重畳され
る。 FIG. 3 shows a specific circuit in which the circuit of the present invention is built into a booster power supply circuit. Terminals 45 and 52 are booster input terminals and output terminals. The changeover switches 27 and 26 are connected between the changeover terminals 21'-25 and 20'-
If the terminal is connected between 24 and 24, the terminal 2
AC 100V between 1 and 20 is applied to the primary side of the power transformer 28 and is input to the bridge rectifier circuit 33 via terminals 30 and 32' of the switch 32. Next, in the case of external power supply, switch 27, 26, 32
between terminals 23-25, 22-24, 29-3
Switch between 2'. In the figure, since the power supply unit 42 is connected to the input side of the booster, the switch 50 for receiving power from the input side is closed. After such initial settings, booster input terminal 4
A signal in which the RF signal and AC 30V are superimposed is input from 5, and this 30V voltage is applied to the coil 46 and capacitor 4.
The signal is inputted to the primary side of the power transformer 28 through a low-pass filter composed of 8. The subsequent operations are as described above. Booster output terminal 52
When supplying AC30V from the side, switch 53
This is achieved by closing the switch 50 and opening the switch 50. Coil 54 and capacitor 55 constitute a low-pass filter. It also supplies power to this booster,
Moreover, following the input terminal 45 or the output terminal 52,
When supplying power to the booster, switch 50, 53
Keep it closed. The primary side terminals 40 and 41 of the power transformer in the power supply unit 42 are connected to commercial AC 100V. Then, one side of the secondary winding is connected to the ground, making it unbalanced, and the RF signal from the input terminal 43 is mixed with the AC 30V by the mixer 44, and superimposed on the coaxial cable that is the transmission line. .
第３図において４９はRF増幅部、７３は電圧
安定化回路、７２は安定化電圧出力端子、４７，
５１は直流カツトコンデンサである。 In FIG. 3, 49 is an RF amplification section, 73 is a voltage stabilization circuit, 72 is a stabilized voltage output terminal, 47,
51 is a DC cut capacitor.
以上のように本発明によればブースタへ給電さ
れる電源電圧の差、及びAC100V時の平衡給電と
AC30V時の不平衡給電の場合のように給電の形
態とは無関係にブースタ内蔵のトランスを利用し
てブリツジ整流を可能にし電源ユニツトの負荷を
軽くすることができるものである。 As described above, according to the present invention, the difference in power supply voltage supplied to the booster and the balanced power supply at 100V AC
Regardless of the form of power supply, as in the case of unbalanced power supply at 30V AC, bridge rectification is possible using a transformer with a built-in booster, thereby reducing the load on the power supply unit.
第１図は従来のブースタ電源回路の回路図、第
２図は本発明の一実施例におけるブースタ電源回
路の回路図、第３図は同装置全体の回路図であ
る。
２８……電源トランス、２６，２７，３２……
スイツチ、３３……ブリツジ勢流回路、３６……
低域通過濾波器、３５……ブースタ入力または出
力端子、２０，２１……交流電源電圧入力端子。
FIG. 1 is a circuit diagram of a conventional booster power supply circuit, FIG. 2 is a circuit diagram of a booster power supply circuit according to an embodiment of the present invention, and FIG. 3 is a circuit diagram of the entire device. 28...Power transformer, 26, 27, 32...
Switch, 33... Bridge current circuit, 36...
Low-pass filter, 35... Booster input or output terminal, 20, 21... AC power supply voltage input terminal.
Claims (1)
一方の固定端子および可動端子を介して電源トラ
ンスの一次側巻線の一端に接続し、この第１の切
替スイツチの他方の固定端子を接地し、上記商用
電源端子の他端を第２の切替スイツチの一方の固
定端子および可動端子を介して上記電源トランス
の一次側巻線の他端に接続し、上記第２の切替ス
イツチの他方の固定端子を低域通過濾波器を介し
てブースタの入出力端子に接続し、上記電源トラ
ンスの二次側巻線の中間タツプを設け、第３の切
替スイツチの一方の固定端子を上記二次側巻線の
一端に接続し、上記第３の切替スイツチの他方の
固定端子を上記二次側巻線の中間タツプに接続
し、上記二次側巻線の他端をブリツジ整流回路の
一方の入力端子に接続し、上記第３の切替スイツ
チの可動端子を上記ブリツジ整流回路の他方の入
力端子に接続し、上記第１の切替スイツチ、およ
び第２の切替スイツチのそれぞれの可動端子が上
記一方の固定端子にそれぞれ接続されるとき、上
記第３のスイツチの可動端子が上記中間タツプに
接続されるように上記第１の切替スイツチ、第２
の切替スイツチ、第３の切替スイツチを連動させ
たことを特徴とするブースタ電源回路。1 Connect one end of the commercial power terminal to one end of the primary winding of the power transformer via one fixed terminal and movable terminal of the first changeover switch, and ground the other fixed terminal of the first changeover switch. , the other end of the commercial power supply terminal is connected to the other end of the primary winding of the power transformer via one fixed terminal and a movable terminal of the second changeover switch, and the other end of the second changeover switch is fixed. The terminal is connected to the input/output terminal of the booster through a low-pass filter, an intermediate tap is provided for the secondary winding of the power transformer, and one fixed terminal of the third changeover switch is connected to the secondary winding of the power transformer. The other fixed terminal of the third selector switch is connected to the intermediate tap of the secondary winding, and the other end of the secondary winding is connected to one input terminal of the bridge rectifier circuit. The movable terminal of the third changeover switch is connected to the other input terminal of the bridge rectifier circuit, and the movable terminal of each of the first changeover switch and the second changeover switch is connected to the fixed input terminal of the first changeover switch and the second changeover switch. When connected to the respective terminals, the first changeover switch and the second switch are connected so that the movable terminal of the third switch is connected to the intermediate tap.
A booster power supply circuit characterized by interlocking a changeover switch and a third changeover switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11092179A JPS5634243A (en) | 1979-08-29 | 1979-08-29 | Booster power source circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11092179A JPS5634243A (en) | 1979-08-29 | 1979-08-29 | Booster power source circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5634243A JPS5634243A (en) | 1981-04-06 |
| JPS6134704B2 true JPS6134704B2 (en) | 1986-08-08 |
Family
ID=14547998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11092179A Granted JPS5634243A (en) | 1979-08-29 | 1979-08-29 | Booster power source circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5634243A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59109113A (en) * | 1982-12-13 | 1984-06-23 | 岡本 広司 | Production of culture medium of mushroom |
| DE102004037820A1 (en) * | 2004-08-04 | 2006-03-16 | Epcos Ag | Electrical circuit and component with the circuit |
-
1979
- 1979-08-29 JP JP11092179A patent/JPS5634243A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5634243A (en) | 1981-04-06 |
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