JPS60123017U - power circuit - Google Patents
power circuitInfo
- Publication number
- JPS60123017U JPS60123017U JP939784U JP939784U JPS60123017U JP S60123017 U JPS60123017 U JP S60123017U JP 939784 U JP939784 U JP 939784U JP 939784 U JP939784 U JP 939784U JP S60123017 U JPS60123017 U JP S60123017U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- output terminal
- transistor
- secondary output
- power transformer
- 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
Links
Landscapes
- Control Of Electrical Variables (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第1図はこの考案の一実施例の電源回路の回路図、第2
図は入力される電源電圧と出力電圧との関係を示す特性
図、第3図は第1図の具体回路図、第4図はこの考案の
他の実施例の回路図である。
E・・・・・・商用電源、Vト・・・・・電源トランス
、D□〜D11−−−−−7ダイオート、sw、Sw′
・・・・・・スイッチ回路、DT、 DT’・・・・・
・電圧検出回路、C□・・・・・・平滑コンデンサ、T
r、1.Tr2.Tr3・・・・・・トランジスタ、R
1〜R5・・・・・・抵抗、C2・・・・・・コンデン
サ、b・・・・・・ツェF43CMD5 −
u 100V 200V −□電源tf
EFigure 1 is a circuit diagram of a power supply circuit according to an embodiment of this invention;
The figure is a characteristic diagram showing the relationship between the input power supply voltage and the output voltage, FIG. 3 is a specific circuit diagram of FIG. 1, and FIG. 4 is a circuit diagram of another embodiment of the invention. E...Commercial power supply, Vt...Power transformer, D□~D11---7 diode, sw, Sw'
...Switch circuit, DT, DT'...
・Voltage detection circuit, C□...Smoothing capacitor, T
r, 1. Tr2. Tr3...Transistor, R
1~R5...Resistor, C2...Capacitor, b...Tse F43CMD5 - u 100V 200V -□Power supply tf
E
Claims (3)
に所望電圧を生じる第1の2次出力端子と、高電圧の商
用電源電圧が1字側に入力されたときに前記所望電圧を
生じる第2の2次出力端子とを有する電源トランスと、
前記電源トラ−ンスの1次側に入力される電圧が前記低
電圧と高電圧の中間の電圧より高いときに出力を発生す
る電圧検出回路と、前記電源トランスの第1の2次出力
端子に一端が接続され、前記電圧検出回路の無出力時に
導通するとともに前記電圧検出回路の有出力時に遮断す
るスイッチ回路、 と、前記スイッチ回路の他端と前記
負荷との間に接続され第1の全波整流器と、前記電源ト
ランスの第2の2次出力端子と前記負荷との間に接続さ
れた第2の全波整流器とを備えた電源回路。(1) A first secondary output terminal that generates a desired voltage when a low-voltage commercial power supply voltage is input to the primary side, and a first secondary output terminal that generates the desired voltage when a high-voltage commercial power supply voltage is input to the character 1 side. a power transformer having a second secondary output terminal that produces a voltage;
a voltage detection circuit that generates an output when the voltage input to the primary side of the power transformer is higher than an intermediate voltage between the low voltage and the high voltage, and a first secondary output terminal of the power transformer; a first switch circuit connected between the other end of the switch circuit and the load, the switch circuit being connected at one end and being conductive when the voltage detection circuit is not outputting, and being cut off when the voltage detection circuit is outputting an output; a second full-wave rectifier connected between a second secondary output terminal of the power transformer and the load.
1の2次出力端子と前記第1の全波整流器との間に一対
の交流入力端間を接続したダイオードブリッジと、この
ダイオードブリッジの一対の直流出力端間に接続した第
1のトランジスタと、この第1のトランジスタにベース
電流を流す抵抗と、導電時に前記ベース電流をバイパス
するホトカプラの受光部とからなり、前記電圧検出回路
は前記電源トランスの第1の2次出力端子の電圧を整流
および平滑する整流平滑回路と、この整流平滑回路の出
力電圧が所定値より高いときに導電するツェナーダイオ
ードと、このツェナーダイオードに流れる電流がベース
電流として与えられる第2のトランジスタと、この第2
のトランジスタのオン時に点灯するホトカプラの発光部
とで構成している実用新案登録請求の範囲第(1)項記
載の電源回路。(2) The switch circuit includes a diode bridge connected between a pair of AC input terminals between the first secondary output terminal of the power transformer and the first full-wave rectifier; The voltage detection circuit includes a first transistor connected between DC output terminals, a resistor that allows a base current to flow through the first transistor, and a photocoupler light receiving section that bypasses the base current when conducting. A rectifying and smoothing circuit that rectifies and smoothes the voltage at the first secondary output terminal of the , a Zener diode that conducts when the output voltage of this rectifying and smoothing circuit is higher than a predetermined value, and a current that flows through this Zener diode as a base current. a second transistor given and this second
and a photocoupler light-emitting section that lights up when the transistor is turned on.
2次出力端子と前記第1の全波整流器との間に一対の交
流入力端間を接続したダイオードブリッジと、このダイ
オードブリッジの一対の直流出力端間に接続したホトカ
プラの受光部とで構成し、前記電圧検出回路は、前記電
源トランスの第1の2次出力端子の電圧を整流および平
滑する整流平滑回路と、この整流平滑回路の出力電圧が
所定値より高いときに導通ずるツェナーダイオードと、
このツェナーダイオードに流れる電流がベース電流とし
て与えられる第1のトランジスタと、この第1のトラン
ジスタのオンオフに対応してオンオフとなる第2のトラ
ンジスタと、この第2のトランジスタのオン時に点灯す
るホトカプラめ発光部とで構成している実用新案登録請
求の範囲第(1)項記載の電源回路。(3) The switch circuit includes a diode bridge connected between a pair of AC input terminals between the first secondary output terminal of the power transformer and the first full-wave rectifier; The voltage detection circuit includes a rectifying and smoothing circuit that rectifies and smoothes the voltage at the first secondary output terminal of the power transformer, and a photo-receiving section of a photocoupler connected between the DC output terminals. a Zener diode that conducts when the output voltage is higher than a predetermined value;
A first transistor to which the current flowing through the Zener diode is given as a base current, a second transistor that turns on and off in response to the on and off of this first transistor, and a photocoupler that lights up when the second transistor is turned on. A power supply circuit according to claim (1) of the utility model registration claim, which comprises a light emitting section.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP939784U JPS60123017U (en) | 1984-01-25 | 1984-01-25 | power circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP939784U JPS60123017U (en) | 1984-01-25 | 1984-01-25 | power circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS60123017U true JPS60123017U (en) | 1985-08-19 |
Family
ID=30489573
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP939784U Pending JPS60123017U (en) | 1984-01-25 | 1984-01-25 | power circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60123017U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01321860A (en) * | 1988-06-01 | 1989-12-27 | Internatl Business Mach Corp <Ibm> | Electric source circuit |
-
1984
- 1984-01-25 JP JP939784U patent/JPS60123017U/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01321860A (en) * | 1988-06-01 | 1989-12-27 | Internatl Business Mach Corp <Ibm> | Electric source circuit |
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