JPS583581A - Transistor inverter - Google Patents

Transistor inverter

Info

Publication number
JPS583581A
JPS583581A JP56098744A JP9874481A JPS583581A JP S583581 A JPS583581 A JP S583581A JP 56098744 A JP56098744 A JP 56098744A JP 9874481 A JP9874481 A JP 9874481A JP S583581 A JPS583581 A JP S583581A
Authority
JP
Japan
Prior art keywords
transistor
base current
power source
output
pace
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
JP56098744A
Other languages
Japanese (ja)
Inventor
Shunichi Morimoto
俊一 森本
Hiroyoshi Yamazaki
山崎　広義
Kazutaka Shimizu
清水　和崇
Kazuhiko Tsugita
次田　和彦
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP56098744A priority Critical patent/JPS583581A/en
Publication of JPS583581A publication Critical patent/JPS583581A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5383—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a self-oscillating arrangement
    • H02M7/53832—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a self-oscillating arrangement in a push-pull arrangement
    • H02M7/53835—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a self-oscillating arrangement in a push-pull arrangement of the parallel type

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)

Abstract

PURPOSE:To prevent the erroneous operation of a transistor by applying a base current from base current supplying auxiliary means including bidirectional switching element when the output of the base current supplying means becomes lower than the prescribed value. CONSTITUTION:A DC power source 1 is connected to a transistor inverter 2, thereby firing a discharge lamp 3. At this time, the output of a base power source A including the coil 8K of a transformer 8 is connected to the bases of transistors 4a, 4b through resistors 6a, 6b, base current auxiliary power source B having voltage dividing resistors 11, 12 of the power source 1, a capacitor 13 and a bidirectional switching element 14 is provided, and is connected to the resistors 6a, 6b. Accordingly, when normal base current cannot be obtained from the power source A due to the flow discharge state of a discharge lamp 3, the base current can be supplied from the power source B, thereby preventing the erroneous operations of the transistors 4a, 4b due to the insufficient base current.

Description

【発明の詳細な説明】 この発明は例えば放電灯の点灯装置などに用いられるト
ランジスタインバータに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transistor inverter used, for example, in a lighting device for a discharge lamp.

第１図はそのような従来＠置の回路内で１図におｈで１
１）は直流電源、　＋２１＃′ｉ自励定電流式プツシニ
ブル形トランジスタインバータ、（３）はインバータ（
２）により点灯される放電灯、（４ａバ４ｂ）　Ｆｉ電
源（υにより付勢される一対のトランジスタ。Figure 1 shows that in such a conventional circuit, h is 1.
1) is a DC power supply, +21#'i self-excited constant current type pushinable transistor inverter, (3) is an inverter (
2) A discharge lamp lit by (4a and 4b) a pair of transistors energized by the Fi power source (υ).

（５ａ）　（５ｂ）は一対の第１のペース抵抗、　　（
６ａ）　（６ｂ）は一対の第２のペース抵抗、（７ｊは
インバータは）の入力電路に設けられた高調波チョーク
フィル。(5a) (5b) is a pair of first pace resistances, (
6a) (6b) is a pair of second pace resistors, (7j is a harmonic choke filter provided in the input circuit of the inverter).

（８）は出カドランスで、一対の１次巻１１ｊ　（８Ｎ
）　＜８Ｎ）　。(8) is an output lance with a pair of primary windings 11j (8N
) <8N).

励振手段である第１の帰還巻線（ＢＢ）０２１１２の帰
還巻線（８Ｋ）及び２次巻線（８Ｓ）により構成されて
いる。（Ａ）はベース電、流供給手段であるペース電源
で１巻線（８８）Ｋよるトランジスタ（４ａ）　（４ｂ
）の交流出力の一部を検出する巻線（８Ｋ）１巻線（８
Ｋ）の出力を整流するダイオードＯＩ及び高周波成分の
バイパスコンデンサ（９）により構成されている。It is composed of a feedback winding (8K) of a first feedback winding (BB) 02112, which is an excitation means, and a secondary winding (8S). (A) is a pace power supply which is a means for supplying base current, and transistors (4a) (4b) each have one winding (88)K.
) 1 winding (8K) that detects a part of the AC output of
It is composed of a diode OI that rectifies the output of K) and a bypass capacitor (9) for high frequency components.

上記のような構成のものにおいて、インバータ＋２１に
電源１１＋が印加されると抵抗（５ａ）　（５ｂ）を介
してトランジスタ（４ａ）　（４ｂ）にはベース電流が
流ｎ＃　巻Ｍ　（８Ｂ）　　の作用によりインバータ（
２）は自励発振を開始し、放電灯＋３１　＃′ｉ点灯す
る。この１うなものにおいてはトランジスタ（４ａ）　
（４ｂ）のベース電流の大巾な電源（勾に工９供給され
る。In the above configuration, when the power supply 11+ is applied to the inverter +21, the base current flows to the transistors (4a) (4b) through the resistors (5a) (5b) of n# turns M (8B). Due to the action, the inverter (
2) starts self-excited oscillation and lights up the discharge lamp +31 #'i. In this one, the transistor (4a)
(4b) A wide power supply with a base current of 9 is supplied.

しかしこのように電源（５）を有するインバータ（２）
におｉては、放電灯（３）の始動時、特に電源ｉｌ＋の
電圧が比較的低いときに放電灯１３）が放′＃Ｍを開始
すると電源（ＡＪの出力電圧が不足し、充分なベース電
流が供給できず、放電灯（３１はグロー放電からアーク
放電に移行できなｉことがある。一度、この状態になる
と、トランジスタ（４ａ）　（４ｂ）が正規のスイッチ
ング動作ができず、トランス（８）の各巻線（８Ｎ）　
（８ＢＪ　（８ＫＪ　（８力の′電圧が低下するため、
電源（１）の電圧が正規の値になっても電源（５）から
正規のベース電流が供給できなくなる。But in this way the inverter (2) with the power supply (5)
In i, when starting the discharge lamp (3), especially when the voltage of the power supply il+ is relatively low, when the discharge lamp 13) starts to emit light, the output voltage of the power supply (AJ) is insufficient, and there is insufficient The discharge lamp (31) may not be able to transition from glow discharge to arc discharge because the base current cannot be supplied. Once this condition occurs, the transistors (4a) (4b) cannot perform normal switching operations, and the (8) Each winding (8N)
(8BJ (8KJ (8KJ) Because the voltage of 8 power decreases,
Even if the voltage of the power source (1) reaches a normal value, the normal base current cannot be supplied from the power source (5).

その結果トランジスタ（４ａ）　（４ｂ）　　の損失が
異常に増加し、急激な温度上昇を招くので、トランジス
タ（４ａ）　（４ｂ）の劣化や破壊を起こすという欠点
があった。　　　　　“□ この発明は上記欠点を改讐することを目的とするもので
ある。As a result, the loss in the transistors (4a) (4b) increases abnormally, leading to a rapid temperature rise, resulting in deterioration or destruction of the transistors (4a) (4b). “□ The purpose of this invention is to remedy the above-mentioned drawbacks.

第２図はこの発明の一実施例を示す回路図で。FIG. 2 is a circuit diagram showing one embodiment of this invention.

両図と同一符号は同一または相当部分を示す。The same reference numerals in both figures indicate the same or corresponding parts.

脂におｉて抵抗ａυα２は電源山の分圧抵抗、　ｆ１３
１は抵抗■と並列に接続されたコンデンサ、　（１４１
はシリコ７双方向スイツチング素子（以下８ＢＳと呼ぶ
）で、　５ｔａｓａ＃を介して抵抗Ｕは゛電源（ＡＪの
出力端と並列に接続されている。この場合抵抗ｔｌＵ（
１２１ｔコンデ／すａ３及び８８８ｒＪ４）によりベー
ス電流供給補助手段（Ｂ）が形成される。なお５Ｂ８ｕ
４１はその端子間に印加さｎる電圧がブレークオー／（
電圧ＶＢＯを越えると導通し、その後、素子を流ｎる電
流が保持電流以下になると再び蓮断状励に戻る特性を有
する。Resistance aυα2 is the voltage dividing resistance of the power source, f13
1 is a capacitor connected in parallel with a resistor ■, (141
is a silicon 7 bidirectional switching element (hereinafter referred to as 8BS), and the resistor U is connected in parallel with the output terminal of the power supply (AJ) via 5tasa#. In this case, the resistor tlU (
The base current supply auxiliary means (B) is formed by 121t conde/sa3 and 888rJ4). Furthermore, 5B8u
41, the voltage applied between its terminals is break-off/(
It has a characteristic that it becomes conductive when the voltage exceeds VBO, and then returns to the lotus-shaped excitation when the current flowing through the element becomes less than the holding current.

いま放電灯１３）が正常に点灯し、インバータ（２）が
正常に発振しているものとする。その場合は電源（５）
の出力゛ｑ圧信号値と抵抗口の端子電圧値との差電圧が
ブレークオーバ電圧ＶＢＧ以下になるように設足されて
−るので、抵抗（６ａ）　（６ｂ）を介してトランジス
タ（４ａ）　（４ｂ）に供給されるベース’４ＥＩ５！
は電ｅｔ四からのみ与えられる。It is now assumed that the discharge lamp 13) is lit normally and the inverter (2) is oscillating normally. In that case, power supply (5)
Since the voltage difference between the output q pressure signal value and the terminal voltage value of the resistor port is set to be less than the breakover voltage VBG, the transistor (4a) is connected via the resistors (6a) and (6b). Base '4EI5 supplied to (4b)!
is given only from Et4.

しかし前記のように放電灯（３１がグロー放電状態に停
り、トランジスタ（４ａ）　（４ｂ）が正規のスイッチ
ング動作をお仁なわ竜い場合には巻線（８Ｋ）の誘起電
圧が低下し、″電源（４）の出力電圧も低下する。電源
（Ｎの出力電圧信号が所定値以下になると、抵抗ａ２の
端子電圧値と電源（Ａ）の出力電圧信号値との差電圧が
ブレークオーバ電圧ＶＢＯを越え、　　８Ｈ８Ｑ４Ｊは
導通する。ひの際８Ｂ８１１４Ｊにはコンデンサ［１３
の放電電流が付加さｎるので５ｎｓ１４１の導通をＬり
確実なものとする。上記のように８８８　ａ４Ｊ−ＪＥ
導通すると、電源は）から抵抗［１１１，（６ａ）（６
ｂ）ｔ−介してトランジスタ（４ａＪ　（４ｂ）に充分
なベース電流が供給されるため、トランジスタ（４ａ）
（４ｂ）　ＦｉＥ規なスイッチング動作をおこなうよう
になり１巻線（８８）には充分高い電圧の発生して放電
灯（３）はアーク放電に移行する。またそれと同時に巻
ａ　（８Ｋ）にも正規な電圧が誘起され。However, as mentioned above, if the discharge lamp (31) remains in the glow discharge state and the transistors (4a) (4b) do not perform normal switching operations, the induced voltage in the winding (8K) decreases. "The output voltage of the power supply (4) also decreases. When the output voltage signal of the power supply (N) becomes less than a predetermined value, the difference voltage between the terminal voltage value of the resistor a2 and the output voltage signal value of the power supply (A) becomes the breakover voltage. VBO is exceeded, and 8H8Q4J becomes conductive.At this time, 8B8114J has a capacitor [13
Since a discharge current of n is added, the conduction of 141 for 5 ns is ensured. 888 a4J-JE as above
When conductive, the power source changes from ) to resistor [111, (6a) (6
b) Since enough base current is supplied to transistor (4aJ (4b)) through t-, transistor (4a)
(4b) FiE standard switching operation is performed, a sufficiently high voltage is generated in the first winding (88), and the discharge lamp (3) shifts to arc discharge. At the same time, a normal voltage is induced in winding a (8K).

電源（４）の出力電圧信号が所足＠を越えて５ＢＳ（１
４１を流れる電流が保持電流以下となり、　　８Ｂ８Ｑ
４１は運断状恣に戻る、その結果インバータ（２）は正
規な動作を持続する。The output voltage signal of the power supply (4) exceeds the required @5BS (1
The current flowing through 41 becomes less than the holding current, and 8B8Q
41 returns to its normal state, and as a result, the inverter (2) continues to operate normally.

第３崗は異なる実施例を示す要部回路図で。The third diagram is a main circuit diagram showing a different embodiment.

電源（５）の出力端にダイオード（１５１が設けられて
いる。このＬうな構成のものはコンデンサ（１３の存置
が小さくとも、　　５ｎｓ（１４の導通開始時に、抵抗
（６ａ）　（６ｂ）を介して有効にベース電流が供給で
きトランジスタ＜４ｍ）　（４ｂ）のスイッチング動作
を早急に正規なものに是正できるという利点がある。A diode (151) is provided at the output end of the power supply (5). Even if the presence of the capacitor (13) is small, the diode (151) is connected to the output terminal of the power supply (5). This has the advantage that a base current can be effectively supplied to the transistor <4m) and the switching operation of the transistor (4b) can be quickly corrected to normal operation.

第４図は更に異なる実施例を示す要部回路図で、電源山
が不平滑な直流である場合などに有効である。電源（１
）がリップルの大きな場合、第２因のような回路では８
Ｂ８α４１を安定に動作させることが困難である。しか
し図のように、抵抗（Ｉｌｌ　１２１　ｔダイオード（
１６１を介して電源Ｉｌ＋に接続するとともに抵抗［１
１１［１２＋と並列にコンデンサａ９を設けることにエ
リ、コンデンサα３の゛磁圧リップルを非常に減するこ
とができ、　　８８８Ｇ４１を安定に動作させることが
できる。またダイオードａｅｈ抵抗α２とコンデンサａ
３との間に、コンデンサα３の゛電荷が抵抗■を介して
放電しない向きに設けても同様の効果が得られる。FIG. 4 is a circuit diagram of a main part showing a further different embodiment, which is effective when the power source is an uneven direct current. Power supply (1
) has a large ripple, in a circuit like the second factor, 8
It is difficult to operate B8α41 stably. But as shown in the figure, the resistor (Ill 121t diode (
161 to the power supply Il+ and the resistor [1
By providing the capacitor a9 in parallel with 11 [12+, the magnetic pressure ripple of the capacitor α3 can be greatly reduced, and the 888G41 can be operated stably. Also, diode aeh resistor α2 and capacitor a
A similar effect can be obtained even if the capacitor α3 is provided between the capacitor α3 and the resistor α3 in such a direction that the electric charge is not discharged through the resistor α3.

上記実施例ではペース電流供給補助手段（Ｈ）は電源込
）の出力電圧信号の低下、復帰に、ｃＤ動作。In the above embodiment, the pace current supply auxiliary means (H) performs cD operation to lower and restore the output voltage signal of the power supply included.

復帰するようなものであったが、出力電流信号により動
作、復帰させても同様の効果が得られる。Although it was described above as a reset operation, the same effect can be obtained even if the output current signal is used to operate and reset the output current signal.

また、上記実施例では巻線（８Ｋ）は出カドランス（８
）Ｋ設けたが、トランジスタ（４ａ）（４りの交流出力
の一部を帰還するようなものであｎば、この発明は同様
に適用できる。In addition, in the above embodiment, the winding (8K) is the output voltage (8K).
)K is provided, but the present invention can be similarly applied if the transistor (4a) (4a) is one that feeds back part of the AC output.

インバータ（２）はまた自励定電流式プッシュプル形の
ものに限定されるものではなく、ペース供給手段（勾を
有するものであれば、他励式や一方式のものなどにも適
用できる。The inverter (2) is not limited to a self-excited constant current push-pull type, but can also be applied to a separately excited type or one-way type pace supply means (as long as it has a gradient).

なお８ＢＳＱ４Ｊと類以な動作をおこなうスイッチング
素子としてはユニジャ／ダシｗ　７　）う／ジスタ等が
あるが、ペース電流供給補助手段（Ｂ）の回路構成は種
々な変形が考えられる。Note that switching elements that perform operations similar to those of 8BSQ4J include Unijar/Dashiw7)U/Jister, etc., but various modifications of the circuit configuration of the pace current supply auxiliary means (B) are conceivable.

上記実施例の負荷（３）は放電灯であったが、動作初期
に突入電流の流れる白熱電球等の他の負荷：３）に対し
てもこの発明は適用できるものである・　　　　　　　
　　　　特開昭５８−３５８１　（３）この発明は以上
説明したとおり、ペース噸流供給手段の出力信号が７９
ｉ足値以下になると直流電源からペース奄Ｒ，を供給し
、上記出力信号が所定値を越えると上記ペース電流を線
断するペース電流供給補助手段１！を設けることにエリ
、ペース電流不足に起因するトランジスタの誤動作を是
正することができ、トランジスタの劣化や破壊が防止で
きるという効果が得られる。Although the load (3) in the above embodiment was a discharge lamp, the present invention can also be applied to other loads (3) such as incandescent light bulbs through which inrush current flows in the initial stage of operation.
JP-A-58-3581 (3) As explained above, this invention provides an output signal of 79
Pace current supply auxiliary means 1 which supplies pace current R from the DC power supply when the value falls below the i foot value, and disconnects the pace current when the output signal exceeds a predetermined value! By providing this, it is possible to correct malfunction of the transistor due to insufficient pace current, and it is possible to prevent deterioration and destruction of the transistor.

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

第１図は従来装置の回路−，第２図はこの発明の一実施
例を示す回路図、第３図は異なる実施例を示す要部回路
図、第４図は更に異なる実施例を示す要部回路図である
。 図においてｉｌ＋は直流電源、（２；はトランジスタイ
ンバータ、（３）は負荷、　　（４ａ）　（４りはトラ
／ジスタ、　　（８Ｂ）は励振手段、（ＡＪｔ；ｔペー
ス電流供給手段。 （Ｈ）はペース４流供給補助手段である。 なお、各図中同一符号は同一または相当部分を示す。 代理人　葛野信−Fig. 1 is a circuit diagram of a conventional device, Fig. 2 is a circuit diagram showing an embodiment of the present invention, Fig. 3 is a main circuit diagram showing a different embodiment, and Fig. 4 is a circuit diagram showing a further different embodiment. FIG. In the figure, il+ is a DC power supply, (2; is a transistor inverter, (3) is a load, (4a) (4 is a transistor/transistor, (8B) is an excitation means, (AJt; t pace current supply means. (H) is the pace 4 flow supply assisting means. In addition, the same reference numerals in each figure indicate the same or corresponding parts. Agent Makoto Kuzuno -

Claims (1)

【特許請求の範囲】[Claims] １１）直Ｒ電源で付勢されるトランジスタ、このトラン
ジスタ励振する励振手段、及び上記トランジスタの交流
出力の一部を検出、整流して上記トランジスタのペース
にＳａするペース電流供給手段を備えたものにおいて、
上記ペース電流供給手段の出力信号が所定Ｍ以下になる
と、上記直ｆｌｉｔｉ！源から上記トランジスタにペー
ス−流を供給し、上記出力信号が所定値を越えると上記
ペース電流をＲ曲するペース電流供給補助手段を設けた
ことを特徴とするトランジスタインバータ。11) A transistor energized by a direct R power source, an excitation means for exciting the transistor, and a pace current supply means for detecting and rectifying a part of the AC output of the transistor and supplying it to the pace of the transistor. ,
When the output signal of the pace current supply means becomes equal to or less than the predetermined value M, the direct fliti! A transistor inverter comprising pace current supply auxiliary means for supplying a pace current from a source to the transistor, and bending the pace current in an R direction when the output signal exceeds a predetermined value.
JP56098744A 1981-06-25 1981-06-25 Transistor inverter Pending JPS583581A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56098744A JPS583581A (en) 1981-06-25 1981-06-25 Transistor inverter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56098744A JPS583581A (en) 1981-06-25 1981-06-25 Transistor inverter

Publications (1)

Publication Number Publication Date
JPS583581A true JPS583581A (en) 1983-01-10

Family

ID=14227981

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56098744A Pending JPS583581A (en) 1981-06-25 1981-06-25 Transistor inverter

Country Status (1)

Country Link
JP (1) JPS583581A (en)

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