JP2003043092A - Apparatus for confirming polarity of winding type transformer - Google Patents

Apparatus for confirming polarity of winding type transformer

Info

Publication number
JP2003043092A
JP2003043092A JP2001227937A JP2001227937A JP2003043092A JP 2003043092 A JP2003043092 A JP 2003043092A JP 2001227937 A JP2001227937 A JP 2001227937A JP 2001227937 A JP2001227937 A JP 2001227937A JP 2003043092 A JP2003043092 A JP 2003043092A
Authority
JP
Japan
Prior art keywords
transformer
polarity
winding
capacitor
led
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
JP2001227937A
Other languages
Japanese (ja)
Inventor
Hideto Oki
秀人 大木
Hitoshi Nakai
仁志 中井
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.)
Nissin Electric Co Ltd
Original Assignee
Nissin Electric 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 Nissin Electric Co Ltd filed Critical Nissin Electric Co Ltd
Priority to JP2001227937A priority Critical patent/JP2003043092A/en
Publication of JP2003043092A publication Critical patent/JP2003043092A/en
Pending legal-status Critical Current

Links

Landscapes

  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for confirming the polarity of winding type transformer which can reliably confirm the polarity and is made compact and cheap. SOLUTION: A switch 3, a diode 4 and a capacitor 5 are connected to one winding 2 of the transformer 1 and anti-parallel-connected light emitting diodes(LED) 10 are connected to the other wiring 9 of the transformer. After charging up the capacitor, the switch 3 is closed to flow a discharge current of the capacitor to the winding of the transformer. At this time the polarity is checked, based on which LED connected to the other winding of the transformer lights. The discharge current of the capacitor flows in the wiring of the transformer at a high current density enough, even for a short time, to use the LED for checking the polarity. This allows the size and the cost of the apparatus to be reduced.

Description

【発明の詳細な説明】 【0001】 【発明の属する技術分野】本発明は、巻線形変成器の極
性の確認を行うための装置に関する。 【0002】 【従来の技術】図1を用いて、従来の変成器における極
性確認方法を説明する。 【0003】極性確認の対象となる変成器1の1次側
に、直流電源6とスイッチ3を配置し、2次側に直流電
圧計13を配置する。図示の回路において、スイッチ3
を閉じると、1次巻線2に急激に立ち上がる1次電流が
流れる。 【0004】1次電流が立ち上がっている間、2次巻線
9に電圧が誘起し、直流電圧計13の指針が、電圧値及
び電圧極性に応じて振れる。このときの直流電圧計13
の指針が触れる方向を見ることによって、変成器1の極
性が確認される。 【0005】 【発明が解決しようとする課題】上記の極性確認方法で
は、スイッチ3を閉じた瞬間に1次巻線2に流れる電流
が、直流電源6が持つインピーダンスにより制限される
ため、変成器1の1次側巻線2に大電流を流すことが困
難である。このため、直流電圧計13の指針が振れる量
が十分に得られず、極性の確認がしにくいという問題が
生じる。 【0006】また、2次巻線9に誘起される電圧の極性
を確認するためには、直流電圧計13として、比較的大
型で高価な永久磁石可動コイル形の電圧計が必要とな
る。 【0007】本発明は、巻線形変成器の極性確認を行う
装置を、確実に極性の確認ができ、かつ、小型で安価な
ものとすることを目的とするものである。 【0008】 【課題を解決するための手段】本発明は、上記目的を達
成するためになされたものである。本発明の極性確認装
置においては、変成器の一方の巻線側に、コンデンサと
スイッチが接続される。変成器の他方の巻線には、逆並
列に接続された発光ダイオード(LED)が接続され
る。極性の確認をする時には、コンデンサを充電した後
にスイッチを閉じることにより、コンデンサの放電電流
が変成器の巻線に流される。このとき、変成器の他方の
巻線に接続されたLEDの一方が発光する。何れのLE
Dが発光するかを識別することによって、極性が確認さ
れる。 【0009】本発明の極性確認装置によれば、コンデン
サの放電電流を変成器の巻線に流すことにより、短時間
ながら大電流を流すことができ、極性の確認を確実に行
うことができる。また、電圧計の代わりにLEDを使用
することにより、装置を小型化、低価格化することがで
きる。 【0010】 【発明の実施の形態】本発明の実施形態について図を用
いて説明する。 【0011】図2は、本発明を適用した極性確認装置の
回路構成を示す。 【0012】変成器1の1次巻線2に、スイッチ3及び
ダイオード4を介してコンデンサ5が接続される。な
お、図示の変成器1は、1次巻線2が1ターンの貫通形
変流器であるが、1次側巻線が複数ターンあっても良
く、又、変流器だけではなく変圧器にも適用可能であ
る。さらに、コンデンサ5は、耐電圧及びコンデンサ容
量を考慮して、適宜、直列又は並列に接続される。 【0013】コンデンサ5の充電回路として、電池等の
直流電源6が、スイッチ7、ダイオード8を介して接続
される。なお、抵抗11、12は、それぞれ充電電流、
放電電流を制限するためのものであり、必要に応じて設
けられる。 【0014】2つのLED10が逆並列に接続され、変
圧器1の2次巻線9に接続される。 【0015】なお、変成器1の1次側と2次側を置き換
えることが可能である。すなわち、コンデンサ5を2次
巻線9に接続し、LED10を1次巻線2に接続するこ
とができる。また、変成器1が極性試験巻線を有する場
合には、コンデンサ5を極性試験巻線に接続することも
できる。 【0016】次に、図2の回路の動作を説明する。 【0017】最初に、スイッチ3を開放した状態でスイ
ッチ7を閉じる。これにより、直流電源6から、ダイオ
ード8を通して充電電流が流れ、コンデンサ5が充電さ
れる。 【0018】コンデンサ5の充電が終了すると、スイッ
チ7を開放してからスイッチ3を閉じる。これにより、
1次巻線2に、急激に立ち上がるコンデンサ5の放電電
流Ihが流れる。放電電流IhはL,C共振により振動
しようとするが、ダイオード4により、逆方向の電流が
流れることは阻止される。このとき流れる放電電流Ih
は、通電時間は短いが大電流となる。 【0019】1次巻線2に電流Ihが流れることによ
り、2次巻線9側に瞬時に電流iが流れ、2つのLED
10の内いずれかが瞬時点灯する。 【0020】図3を用いて、LED10の発光により極
性を確認する原理を説明する。 【0021】図3(A)と(B)に示す変成器1は、2
次巻線9の巻き方向が異なっており、異なる極性となっ
ている。したがって、放電電流Ihの方向が同じであれ
ば、2次巻線9に流れる電流iの方向は、(A)と
(B)とでは逆になる。2つのLED10の内、その陽
極が2次巻線9の(+)極側に接続されたものが発光を
し、陰極が(−)極側に接続されたものは発光をしな
い。したがって、発光したLED10を特定することに
より、変成器1の極性を確認することができる。 【0022】以上説明した例によれば、コンデンサ5を
直流電源とするという簡単な構成により、変成器1の1
次側に大きな電流を流すことができる。したがって、2
次電流iとしてLED10を発光させるのに十分な電流
が得られる。また、LED10は、小型かつ安価なもの
であるので、装置を小型化、低価格化することができ
る。 【0023】 【発明の効果】本発明によれば、巻線形変成器の極性確
認を行う装置を、確実に極性の確認ができ、かつ、小型
で安価なものとすることができる。
Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for confirming the polarity of a wound transformer. 2. Description of the Related Art Referring to FIG. 1, a description will be given of a polarity confirmation method in a conventional transformer. [0003] A DC power supply 6 and a switch 3 are arranged on the primary side of a transformer 1 whose polarity is to be checked, and a DC voltmeter 13 is arranged on the secondary side. In the circuit shown, switch 3
, A rapidly rising primary current flows through the primary winding 2. While the primary current is rising, a voltage is induced in the secondary winding 9 and the pointer of the DC voltmeter 13 fluctuates according to the voltage value and the voltage polarity. DC voltmeter 13 at this time
By observing the direction in which the pointer touches, the polarity of the transformer 1 is confirmed. In the above polarity checking method, the current flowing through the primary winding 2 at the moment when the switch 3 is closed is limited by the impedance of the DC power supply 6, so that the transformer It is difficult to flow a large current through the primary winding 2 of the first. For this reason, a sufficient amount of movement of the pointer of the DC voltmeter 13 cannot be obtained, and there is a problem that it is difficult to confirm the polarity. In order to confirm the polarity of the voltage induced in the secondary winding 9, a relatively large and expensive permanent magnet moving coil type voltmeter is required as the DC voltmeter 13. SUMMARY OF THE INVENTION It is an object of the present invention to provide a device for confirming the polarity of a wound transformer, which can surely confirm the polarity, and which is small and inexpensive. [0008] The present invention has been made to achieve the above object. In the polarity confirmation device of the present invention, a capacitor and a switch are connected to one winding side of the transformer. A light emitting diode (LED) connected in anti-parallel is connected to the other winding of the transformer. When checking the polarity, by closing the switch after charging the capacitor, the discharge current of the capacitor flows through the winding of the transformer. At this time, one of the LEDs connected to the other winding of the transformer emits light. Which LE
By identifying whether D emits light, the polarity is confirmed. According to the polarity confirmation apparatus of the present invention, a large current can be supplied in a short time by flowing the discharge current of the capacitor to the winding of the transformer, and the polarity can be confirmed reliably. In addition, by using an LED instead of a voltmeter, the device can be reduced in size and cost. Embodiments of the present invention will be described with reference to the drawings. FIG. 2 shows a circuit configuration of a polarity confirmation device to which the present invention is applied. A capacitor 5 is connected to a primary winding 2 of the transformer 1 via a switch 3 and a diode 4. The illustrated transformer 1 is a through-type current transformer in which the primary winding 2 has one turn. However, the primary winding 2 may have a plurality of turns, and not only the current transformer but also a transformer may be used. Is also applicable. Further, the capacitors 5 are connected in series or in parallel as appropriate in consideration of withstand voltage and capacitor capacity. As a charging circuit for the capacitor 5, a DC power source 6 such as a battery is connected via a switch 7 and a diode 8. The resistors 11 and 12 are respectively a charging current,
This is for limiting the discharge current, and is provided as needed. Two LEDs 10 are connected in anti-parallel and connected to the secondary winding 9 of the transformer 1. The primary and secondary sides of the transformer 1 can be replaced. That is, the capacitor 5 can be connected to the secondary winding 9 and the LED 10 can be connected to the primary winding 2. If the transformer 1 has a polarity test winding, the capacitor 5 can be connected to the polarity test winding. Next, the operation of the circuit shown in FIG. 2 will be described. First, the switch 7 is closed with the switch 3 opened. As a result, a charging current flows from the DC power supply 6 through the diode 8, and the capacitor 5 is charged. When the charging of the capacitor 5 is completed, the switch 7 is opened and then the switch 3 is closed. This allows
The discharge current Ih of the capacitor 5 that rises rapidly flows through the primary winding 2. The discharge current Ih tends to oscillate due to the L and C resonances, but the diode 4 prevents the reverse current from flowing. The discharge current Ih flowing at this time
Means that the current is short but the current is large. When the current Ih flows through the primary winding 2, a current i instantaneously flows to the secondary winding 9 side, and the two LEDs
Any one of 10 lights up instantly. The principle of confirming the polarity by the light emission of the LED 10 will be described with reference to FIG. The transformer 1 shown in FIGS. 3A and 3B
The winding direction of the next winding 9 is different and has different polarities. Therefore, if the direction of the discharge current Ih is the same, the direction of the current i flowing through the secondary winding 9 is opposite between (A) and (B). Of the two LEDs 10, one whose anode is connected to the (+) pole side of the secondary winding 9 emits light, and one whose cathode is connected to the (-) pole side does not emit light. Therefore, the polarity of the transformer 1 can be confirmed by specifying the LED 10 that has emitted light. According to the example described above, the transformer 1 has a simple configuration in which the capacitor 5 is used as a DC power supply.
A large current can flow to the next side. Therefore, 2
A current sufficient to cause the LED 10 to emit light is obtained as the next current i. Further, since the LED 10 is small and inexpensive, the size and cost of the device can be reduced. According to the present invention, an apparatus for confirming the polarity of a wound transformer can be surely confirmed, and can be made small and inexpensive.

【図面の簡単な説明】 【図1】従来の巻線形変成器極性確認装置の回路図であ
る。 【図2】本発明を適用した巻線形変成器極性確認装置の
回路図である。 【図3】図2の回路における極性確認の原理を示す図で
ある。 【符号の説明】 1…変成器 2…1次巻線 3…スイッチ 4…ダイオード 5…コンデンサ 6…直流電源 7…スイッチ 8…ダイオード 9…2次巻線 10…LED 11、12…抵抗 13…直流電圧計
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a circuit diagram of a conventional wound transformer polarity checking device. FIG. 2 is a circuit diagram of a winding type transformer polarity checking device to which the present invention is applied. FIG. 3 is a diagram showing the principle of polarity confirmation in the circuit of FIG. 2; [Description of Signs] 1 ... Transformer 2 ... Primary winding 3 ... Switch 4 ... Diode 5 ... Capacitor 6 ... DC power supply 7 ... Switch 8 ... Diode 9 ... Secondary winding 10 ... LED 11, 12 ... Resistance 13 ... DC voltmeter

Claims (1)

【特許請求の範囲】 【請求項1】 コンデンサと、 このコンデンサを充電する充電部と、 前記コンデンサと変成器の一方の巻線との間に接続され
るスイッチと、 逆並列に接続されたLEDであって、前記変成器の他方
の巻線に接続されるLEDと、 を具備する巻線形変成器の極性確認装置。
Claims: 1. A capacitor, a charging unit for charging the capacitor, a switch connected between the capacitor and one winding of a transformer, and an LED connected in anti-parallel. An LED connected to the other winding of the transformer, and a polarity confirmation device for the wound transformer.
JP2001227937A 2001-07-27 2001-07-27 Apparatus for confirming polarity of winding type transformer Pending JP2003043092A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001227937A JP2003043092A (en) 2001-07-27 2001-07-27 Apparatus for confirming polarity of winding type transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001227937A JP2003043092A (en) 2001-07-27 2001-07-27 Apparatus for confirming polarity of winding type transformer

Publications (1)

Publication Number Publication Date
JP2003043092A true JP2003043092A (en) 2003-02-13

Family

ID=19060523

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001227937A Pending JP2003043092A (en) 2001-07-27 2001-07-27 Apparatus for confirming polarity of winding type transformer

Country Status (1)

Country Link
JP (1) JP2003043092A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102393497A (en) * 2011-09-09 2012-03-28 陕西电力科学研究院 Portable polarity calibrator for electronic mutual inductor
CN103389439A (en) * 2013-07-29 2013-11-13 国家电网公司 CT (computed tomography) polarity detecting instrument
CN104865494A (en) * 2015-05-06 2015-08-26 国家电网公司 Portable current transformer polarity testing device and use method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102393497A (en) * 2011-09-09 2012-03-28 陕西电力科学研究院 Portable polarity calibrator for electronic mutual inductor
CN103389439A (en) * 2013-07-29 2013-11-13 国家电网公司 CT (computed tomography) polarity detecting instrument
CN104865494A (en) * 2015-05-06 2015-08-26 国家电网公司 Portable current transformer polarity testing device and use method thereof

Similar Documents

Publication Publication Date Title
US8581512B2 (en) Light source module, lighting apparatus, and illumination device using the same
US10679797B2 (en) Ripple current generating circuit
US20120181952A1 (en) Drive circuit for light-emmiting diode array
TW200913786A (en) LED outage detection circuit
US7894717B2 (en) Control circuit for self exciting DC/DC converter
JP2003043092A (en) Apparatus for confirming polarity of winding type transformer
JPS6029156Y2 (en) Electromagnetic relay remote control circuit
CN105636260A (en) Lighting device and lighting fixture using same
JP2576169B2 (en) Battery with remaining amount display function
US10257903B1 (en) Signal detecting device and light-emitting apparatus using the same
JP2018066661A (en) Battery deterioration diagnosis device, charger, and battery deterioration diagnosis method
JPH0236731A (en) Operation confirming device for emergency lamp circuit
RU222867U1 (en) SINGLE POLE HIGH VOLTAGE INDICATOR WITH BUILT-IN TEST DEVICE
CN203455419U (en) Phase sequence detecting device
RU59909U1 (en) AC GENERATOR IN Inductance Coil
Alden et al. An electromagnetic induction flashlight experiment
RU2096794C1 (en) Indicator of polarity of windings
TWI290010B (en) Discharge lamp lighting device
JP2006278054A (en) Lighting device and illumination device
JPH0216291Y2 (en)
JP2576149B2 (en) Battery with remaining amount display function
JPS631823B2 (en)
JP2006262148A (en) Pulse generation circuit and electric fence using the same
JPH01258396A (en) Lighting device for fluorescent lamp
CN117837074A (en) Current booster