JPS61121027U - - Google Patents
Info
- Publication number
- JPS61121027U JPS61121027U JP453485U JP453485U JPS61121027U JP S61121027 U JPS61121027 U JP S61121027U JP 453485 U JP453485 U JP 453485U JP 453485 U JP453485 U JP 453485U JP S61121027 U JPS61121027 U JP S61121027U
- Authority
- JP
- Japan
- Prior art keywords
- feedback
- transformer
- winding
- self
- voltage
- 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.)
- Granted
Links
- 238000004804 winding Methods 0.000 claims description 7
- 230000005669 field effect Effects 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図は本考案に係るＦＥＴ自励スイツチング
回路の一実施例を示す回路図、第２図はその動作
波形の説明図、第３図および第４図はそれぞれ本
考案の他の実施例を示す回路図、第５図は従来技
術を示す回路図である。
１……帰還回路、２……オン時間制限回路、３
……定電圧安定化回路、Ｑ１……電界効果トラン
ジスタ、Ｎ１……一次巻線、ＮＧ１……帰還巻線
、ＮＧ２……巻線、Ｄ３……ダイオード。
Fig. 1 is a circuit diagram showing one embodiment of the FET self-excited switching circuit according to the present invention, Fig. 2 is an explanatory diagram of its operating waveforms, and Figs. 3 and 4 respectively show other embodiments of the present invention. FIG. 5 is a circuit diagram showing a conventional technique. 1...Feedback circuit, 2...On time limit circuit, 3
... Constant voltage stabilization circuit, Q 1 ... Field effect transistor, N 1 ... Primary winding, NG 1 ... Feedback winding, NG 2 ... Winding, D 3 ... Diode.
Claims (1)
子である電界効果トランジスタを接続し、そのゲ
ートに前記トランスの帰還巻線を含む帰還回路を
接続してその帰還電圧を利用して自励発振させ、
トランスの二次巻線から出力を取り出すようにし
た自励スイツチング回路において、トランスに形
成した前記帰還巻線以外の巻線に誘起する電圧を
ダイオードを介して、前記帰還電圧に対して加算
的に前記電界効果トランジスタのゲートに印加す
るよう接続したことを特徴とするＦＥＴ自励スイ
ツチング回路。 A field effect transistor, which is a main switching element, is connected in series with the primary winding of the transformer, a feedback circuit including a feedback winding of the transformer is connected to the gate thereof, and the feedback voltage is used to cause self-oscillation,
In a self-excited switching circuit that extracts output from the secondary winding of a transformer, a voltage induced in a winding other than the feedback winding formed in the transformer is added to the feedback voltage through a diode. A FET self-excited switching circuit, characterized in that the FET self-excited switching circuit is connected to apply voltage to the gate of the field effect transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP453485U JPH0349476Y2 (en) | 1985-01-17 | 1985-01-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP453485U JPH0349476Y2 (en) | 1985-01-17 | 1985-01-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61121027U true JPS61121027U (en) | 1986-07-30 |
| JPH0349476Y2 JPH0349476Y2 (en) | 1991-10-22 |
Family
ID=30480202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP453485U Expired JPH0349476Y2 (en) | 1985-01-17 | 1985-01-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0349476Y2 (en) |
-
1985
- 1985-01-17 JP JP453485U patent/JPH0349476Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0349476Y2 (en) | 1991-10-22 |
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