JPH0337221Y2

JPH0337221Y2 -

Info

Publication number: JPH0337221Y2
Application number: JP2865385U
Authority: JP
Priority date: 1985-02-28
Filing date: 1985-02-28
Publication date: 1991-08-07
Also published as: JPS61144625U

Description

【考案の詳細な説明】（産業上の利用分野）本考案は、１次側のタツプ切替えによつて巻線
比が変るトランス部と、該１次側のタツプ切替え
に応じてオン・オフする接点でもつて２次側のタ
ツプ切替えが行われ、巻線比が一定に保持される
トランス部を備えるトランス回路に関する。[Detailed description of the invention] (Field of industrial application) The present invention consists of a transformer whose winding ratio changes by switching the taps on the primary side, and a transformer that turns on and off according to the switching of the taps on the primary side. The present invention relates to a transformer circuit including a transformer section in which tap switching on the secondary side is performed through contacts and a winding ratio is maintained constant.

（従来の技術）従来のトランス回路として、例えば、第２図に
示すものがある。トランス回路は、トランスT₁
の１次側コイルL₁のタツプａ，ｃ間又はｂ，ｃ
間に所定電圧V_pを出力する電源（図示せず）を
接続し、２次側コイルL₂のタツプｄ，ｇ間又は
ｅ，ｆ間の出力を手動のスイツチ回路SW₁を介し
て回路X₁に接続すると共に、２次側コイルL₃の
タツプｈ，ｉ間の出力回路X₂に与える構成と成
つている。トランスT₁において、１次側コイル
L₁と２次側コイルL₂とで構成するトランス部は、
１次側のタツプａ，ｃ及び２次側のタツプｄ，ｇ
を使用したときの巻線比と、１次側のタツプｂ，
ｃ及び２次側のタツプｅ，ｆを使用したときの巻
線比はともに一定値Ｋを示すように成つている。
又、１次側コイルL₁と２次側コイルL₃とで構成
するトランス部は、１次側のタツプａ，ｃを使用
したときの巻線比は、１次側のタツプｂ，ｃを使
用したときの巻線比よりも小さく成つている。(Prior Art) As a conventional transformer circuit, there is one shown in FIG. 2, for example. Transformer circuit transformer T ₁
Between taps a and c or b and c of primary coil _L1
A power supply (not shown) that outputs a predetermined voltage V _p is connected between the terminals, and the output between taps d and g or e and f of the secondary coil L ₂ is connected to the circuit X via a manual switch circuit SW ₁ . ₁ and is configured to be applied to the output circuit X ₂ between taps h and i of the secondary coil L ₃ . In transformer T ₁ , the primary coil
The transformer section consists of _L1 and secondary coil _L2 ,
Taps a, c on the primary side and taps d, g on the secondary side
The turns ratio when using , and the tap b on the primary side,
When taps c and taps e and f on the secondary side are used, the winding ratios are both set to a constant value K.
In addition, in the transformer section consisting of the primary coil _L1 and the secondary coil _L3 , the turns ratio when using the primary side taps a and c is as follows: The winding ratio is smaller than when used.

尚、回路X₁は、常に、定電圧の電力の供給を
必要とする回路であり、回路X₂は、電圧値の異
なる電力の供給を必要とする回路である。 Note that the circuit X ₁ is a circuit that always requires the supply of power at a constant voltage, and the circuit X ₂ is a circuit that requires the supply of power at different voltage values.

以上の構成において、電源をタツプａ，ｃ間に
接続するとき、予めスイツチ回路SW₁をタツプ
ｄ，ｇ側に接続し、又、電源タツプｂ，ｃ間に接
続するとき、予めスイツチ回路SW₁をタツプｅ，
ｆ間に接続する。これにより、回路X₁には、１
次側のタツプ切替えに関係なく定電圧の電力が供
給され、回路X₂には、トランスT₁の該タツプ切
替えに応じて昇圧又は降圧された電圧が供給され
る。 In the above configuration, when connecting the power supply between taps a and c, the switch circuit SW ₁ is connected in advance to the taps d and g, and when connecting the power supply between power taps b and c, the switch circuit SW ₁ is connected in advance to the taps d and g. Tap e,
Connect between f. As a result, circuit X ₁ has 1
A constant voltage power is supplied regardless of the tap switching on the next side, and a voltage boosted or stepped down is supplied to the circuit _X2 in accordance with the tap switching of the transformer _T1 .

ところで、上記トランス回路において、スイツ
チ回路SW₁は１次側から独立しているので、２次
側のタツプ切替えに必要な配線をトランスT₁の
１・２次間にまたがつて設ける必要がなく電気回
路上好ましい。又、回路X₂の仕様に基づいて２
次側コイルL₃が高圧回路になる場合（回路X₂が
高電圧で駆動される場合）、１次側のタツプを切
替えて回路X₂に所定の電圧を供給する構成とな
つているので、電気回路上好ましい（２次側の高
圧回路での切替えは絶縁上の問題等があつて好ま
しくない）。 By the way, in the above transformer circuit, the switch circuit SW ₁ is independent from the primary side, so there is no need to provide the wiring necessary for switching the taps on the secondary side across the 1st and 2nd sides of the transformer T ₁ . Preferable for electrical circuits. Also, based on the specifications of circuit X ₂
When the secondary coil L ₃ becomes a high voltage circuit (when the circuit X ₂ is driven with high voltage), the configuration is such that the tap on the primary side is switched to supply a predetermined voltage to the circuit X ₂ . This is preferable in terms of electrical circuits (switching in the high-voltage circuit on the secondary side is not preferable due to problems with insulation, etc.).

（考案が解決しようとする問題点）しかし、従来のトランス回路にあつては、１次
側のタツプ切替えと２次側のタツプ切替えを個々
に行うようになつているため、１次側のタツプ切
替え及び２次側のタツプ切替え（スイツチ回路
SW₁の切替え）が正しく行われないと２次側コイ
ルL₂の電圧が高くなつて回路X₁を焼損する恐れ
がある。(Problem that the invention aims to solve) However, in conventional transformer circuits, the taps on the primary side and the taps on the secondary side are switched individually, so the taps on the primary side Switching and tap switching on the secondary side (switch circuit
If the switching of SW ₁ is not performed correctly, the voltage of the secondary coil L ₂ will become high and there is a risk of burning out the circuit X ₁ .

（問題点を解決するための手段）本考案は、上記に鑑みてなされたものであり、
その目的は、１次側のタツプ切替えに対応して２
次側のタツプ切替えを確実に行うトランス回路を
提供するにある。(Means for solving the problem) The present invention was made in view of the above,
The purpose is to
To provide a transformer circuit that reliably performs tap switching on the next side.

上記目的を達成する本考案のトランス回路は、
トランスの２次側電圧で駆動され、１次側のタツ
プの切替えに応じてオン・オフする接点でもつて
２次側のタツプ切替えを行う構成となつている。 The transformer circuit of the present invention that achieves the above purpose is:
The configuration is such that the taps on the secondary side are switched using contacts that are driven by the voltage on the secondary side of the transformer and turn on and off in response to switching of the taps on the primary side.

（実施例）以下、図面を参照し本考案について詳細に説明
する。(Example) Hereinafter, the present invention will be described in detail with reference to the drawings.

第１図は、本考案の一実施例を示す構成図であ
る。第１図において第２図に付した符号と同一の
ものは同じ意味で用いられている。本実施例の特
徴は、２次側コイルL₂のタツプｄ，ｇ間の電圧
で駆動されるリレー回路RC及び該回路RCで作成
される接点r_a及びr_bから成るスイツチ回路SW₂で
２次側コイルL₂のタツプ切替えを行うタツプ切
替え回路を構成した点にある。リレー回路RCは、
２次側コイルのタツプｄ，ｇ間の交流電圧を直流
電圧Ｖに変換する整流回路D₁及びコンデンサC₁
と、この直流電圧Ｖが与えられるリレーRL及び
ツエナーダイオードDZ₁とで構成される。スイツ
チ回路SW₂は、リレーRLのａ接点（リレーが付
勢されるとオンに成る接点）r_aをタツプｅ及びｆ
の出力ラインに、又、ｂ接点（リレーが消勢され
るとオンに成る接点）r_bをタツプｂ及びｇの出力
ラインに設置する構成と成つている。又、電源を
１次側のタツプａ，ｃ間及びタツプｂ，ｃ間夫々
に接続したときの直流電圧ＶをV_ac及びV_bc、リ
レーRLの駆動電圧をV_r1、ツエナーダイオード
DZ₁のツエナー電圧をV_zとしたとき、各電圧間に
次式の関係が成立するように成つている。 FIG. 1 is a block diagram showing an embodiment of the present invention. In FIG. 1, the same reference numerals as in FIG. 2 are used with the same meaning. The feature of this embodiment is that the switch circuit SW ₂ consists of a relay circuit RC driven by the voltage between taps d and g of the secondary coil L ₂ and contacts r _a and r _b created by the circuit RC. The main feature is that a tap switching circuit is configured to switch the taps of the next coil _L2 . Relay circuit RC is
Rectifier circuit D ₁ and capacitor C ₁ that convert AC voltage between taps d and g of the secondary coil into DC voltage V
, a relay RL to which this DC voltage V is applied, and a Zener diode _DZ1 . Switch circuit SW ₂ taps contact a of relay RL (contact that turns on when the relay is energized) r _a and e and f.
In addition, a b contact (a contact that turns on when the relay is de-energized) r _b is installed in the output lines of taps b and g. Also, the DC voltage V when the power supply is connected between taps a and c on the primary side and between taps b and c, respectively, is V _ac and V _bc , the drive voltage of relay RL is V _r1 , and the Zener diode
When the Zener voltage of DZ ₁ is _Vz , the following relationship is established between each voltage.

V_ac＜（V_r1＋V_z）≒V_bc 以上の構成において、１次側のタツプａ，ｃ間
に定格電力を印加したとき、直流電圧ＶはV_acと
なる。このときの電圧V_acは（V_r1＋V_z）より小
さいため、リレーRLは付勢されず、リレーRLの
ｂ接点r_bがオン、ａ接点r_aがオフとなる。従つ
て、回路X₁には、２次側のタツプｄ及びｇを介
して電圧値KV_pの電力が供給される。又、１次側
のタツプｂ，ｃ間に定格電力を印加したとき、直
流電圧ＶはV_bcとなる。このときの直流電圧V_bc
は（V_r1＋V_z）にほぼ等しいため、リレーRLに
電流が流れ付勢され、リレーRLのａ接点r_aがオ
ン、ｂ接点r_bがオフとなる。従つて、回路X₁に
は、２次側のタツプｄ及びｇを介して電圧値KV_p
の電力が供給される。これとは逆に、１次側のタ
ツプをｂ，ｃ間からａ，ｃ間に切替えたときは、
リレーRLが付勢から消勢に変り、回路X₁への接
続が切替えられる。このように１次側コイルL₁
及び２次側コイルL₂から成るトランス部におい
て、１次側のタツプの位置に関係なく巻線比が一
定と成つて回路X₁にほぼ一定の電圧の電力が供
給される。一方、１次側コイルL₁及び２次側コ
イルL₃から成るトランス部においては、１次側
のタツプの位置が変ると巻線比も変り、回路X₂
に１次側のタツプの切替えに応じて昇圧又は降圧
された電力が供給される。 In a configuration where V _ac <(V _r1 +V _z )≈V _bc or more, when rated power is applied between taps a and c on the primary side, the DC voltage V becomes V _ac . Since the voltage V _ac at this time is smaller than (V _r1 +V _z ), the relay RL is not energized, and the b contact r _b of the relay RL is turned on and the a contact r _a is turned off. Therefore, the circuit _X1 is supplied with power of voltage value _KVp via the taps d and g on the secondary side. Furthermore, when the rated power is applied between taps b and c on the primary side, the DC voltage V becomes V _bc . DC voltage at this time V _bc
Since is approximately equal to (V _r1 +V _z ), a current flows through the relay RL, energizing it, and the a contact r _a of the relay RL turns on and the b contact r _b turns off. Therefore, the voltage value KV _p is applied to the circuit X ₁ via the taps d and g on the secondary side.
electricity is supplied. On the contrary, when the tap on the primary side is switched from between b and c to between a and c,
Relay RL changes from energized to de-energized and the connection to circuit X ₁ is switched. In this way, the primary coil L ₁
In the transformer section consisting of the secondary coil L2 and the secondary coil _L2 , the winding ratio is constant regardless of the position of the tap on the primary side, and power at a substantially constant voltage is supplied to the circuit _X1 . On the other hand, in the transformer section consisting of the primary coil _L1 and the secondary coil _L3 , when the position of the tap on the primary side changes, the turns ratio also changes, and the circuit _X2
In response to switching of the tap on the primary side, the voltage is supplied with stepped-up or stepped-down power.

尚、上記実施例において、リレー回路ツエナー
ダイオードを用いているが、本考案は、これに限
定するものではなく、他の電圧依存性素子、例え
ば、バリスタであつてもよい。又、リレー回路の
リレーを無接点で構成するようにしてよい。 Although the relay circuit uses a Zener diode in the above embodiment, the present invention is not limited to this, and other voltage-dependent elements such as varistors may be used. Further, the relay of the relay circuit may be configured as a non-contact type.

（考案の効果）以上、説明の通り、本考案のトランス回路によ
れば、トランスの２次側電圧で駆動され、１次側
のタツプの切替えに応じてオン・オフする接点で
もつて２次側のタツプ切替えを行うようにしたた
め、１次側のタツプ切替えに対応して２次側のタ
ツプ切替えを確実に行うことができる。(Effects of the invention) As explained above, according to the transformer circuit of the invention, the contacts that are driven by the voltage on the secondary side of the transformer and turn on and off according to the switching of the taps on the primary side can also be used on the secondary side. Since the taps are switched, the taps on the secondary side can be reliably switched in response to the taps on the primary side.

[Brief explanation of the drawing]

第１図は、本考案の一実施例を示す構成図、第
２図は、従来例を示す構成図である。 T₁……トランス、RC……リレー回路、SW₂…
…スイツチ回路。 FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional example. T ₁ ...Transformer, RC...Relay circuit, SW ₂ ...
...Switch circuit.

Claims

[Claims for Utility Model Registration] A transformer circuit that connects a plurality of independent circuits on the secondary side, comprising a first transformer section whose winding ratio changes by switching the taps on the primary side, and the tap switching. In a transformer circuit equipped with a second transformer section in which the winding ratio is kept constant by switching taps on the secondary side, the voltage on the secondary side of the second transformer section The circuit is driven by a tap switching circuit that switches the secondary side of the second transformer section using contacts that turn on and off in accordance with the switching of the taps on the primary side. transformer circuit.