JPS649489U - - Google Patents
Info
- Publication number
- JPS649489U JPS649489U JP1987104342U JP10434287U JPS649489U JP S649489 U JPS649489 U JP S649489U JP 1987104342 U JP1987104342 U JP 1987104342U JP 10434287 U JP10434287 U JP 10434287U JP S649489 U JPS649489 U JP S649489U
- Authority
- JP
- Japan
- Prior art keywords
- zener diode
- primary winding
- transformer
- switching circuit
- winding
- 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
- 238000004804 winding Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Dc-Dc Converters (AREA)
- Power Conversion In General (AREA)
- Electronic Switches (AREA)
Description
第１図はこの考案の一実施例によるスイツチン
グ回路の要部の構成を示す回路図、第２図は従来
のスイツチング回路の構成を示す回路図、第３図
はフライバツク電圧の波形を示す波形図、第４図
は従来のスイツチング回路の他の構成例を示す回
路図である。
Ｒ２……抵抗、ＺＤ……ツエナーダイオード、
Ｔ……トランス、Ｌ１……１次巻線、Ｌ２……２
次巻線、Ｑ１……トランジスタ。
Figure 1 is a circuit diagram showing the configuration of the main parts of a switching circuit according to an embodiment of this invention, Figure 2 is a circuit diagram showing the configuration of a conventional switching circuit, and Figure 3 is a waveform diagram showing the waveform of the flyback voltage. , FIG. 4 is a circuit diagram showing another example of the configuration of a conventional switching circuit. R2 ...Resistor, ZD...Zener diode,
T...Transformer, L1 ...Primary winding, L2 ...2
Next winding, Q1 ...transistor.
Claims (1)
て該トランスの２次巻線に交流電力を得るように
したスイツチング回路において、ツエナーダイオ
ードおよび抵抗の直列回路を、前記トランスの１
次巻線に並列に、かつ、前記ツエナーダイオード
の極性が前記１次巻線に生じるフライバツク電圧
と逆方向になるように挿入したことを特徴とする
スイツチング回路。 In a switching circuit that controls on/off the current of the primary winding of a transformer to obtain AC power to the secondary winding of the transformer, a series circuit of a Zener diode and a resistor is connected to one of the transformers.
A switching circuit characterized in that the Zener diode is inserted in parallel with the primary winding so that the polarity of the Zener diode is in the opposite direction to the flyback voltage generated in the primary winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987104342U JPS649489U (en) | 1987-07-07 | 1987-07-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987104342U JPS649489U (en) | 1987-07-07 | 1987-07-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS649489U true JPS649489U (en) | 1989-01-19 |
Family
ID=31335972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987104342U Pending JPS649489U (en) | 1987-07-07 | 1987-07-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS649489U (en) |
-
1987
- 1987-07-07 JP JP1987104342U patent/JPS649489U/ja active Pending