JPH0324726U - - Google Patents
Info
- Publication number
- JPH0324726U JPH0324726U JP8531689U JP8531689U JPH0324726U JP H0324726 U JPH0324726 U JP H0324726U JP 8531689 U JP8531689 U JP 8531689U JP 8531689 U JP8531689 U JP 8531689U JP H0324726 U JPH0324726 U JP H0324726U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- circuit
- power supply
- switching power
- main
- 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
- 230000005669 field effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 2
- 238000009499 grossing Methods 0.000 description 1
Landscapes
- Dc-Dc Converters (AREA)
- Electronic Switches (AREA)
Description
第１図は本考案によるスイツチング電源の主ト
ランジスタ駆動回路の一実施例を示す回路図、第
２図は本考案の他の実施例を示す回路図、第３図
は従来回路を示す回路図、第４図は本考案の実施
例および従来回路の動作を説明する波形図、第５
図Ａ，Ｂは波形の急峻度と損失量および雑音レベ
ルとの関係を示す図である。
１……主トランス、４……主トランジスタ、４
……コンデンサ、５……整流平滑化回路、６，７
……二次整流ダイオード、８……チヨークコイル
、９……コンデンサ、１０……制御回路、１１…
…駆動用トランス、１２……ダイオード、１４…
…駆動回路、１７……補助トランジスタ、１８，
１９……抵抗器。
FIG. 1 is a circuit diagram showing one embodiment of the main transistor drive circuit of a switching power supply according to the present invention, FIG. 2 is a circuit diagram showing another embodiment of the present invention, and FIG. 3 is a circuit diagram showing a conventional circuit. Figure 4 is a waveform diagram explaining the operation of the embodiment of the present invention and the conventional circuit;
Figures A and B are diagrams showing the relationship between waveform steepness, loss amount, and noise level. 1... Main transformer, 4... Main transistor, 4
... Capacitor, 5 ... Rectification and smoothing circuit, 6, 7
...Secondary rectifier diode, 8...Chiyoke coil, 9...Capacitor, 10...Control circuit, 11...
...Drive transformer, 12...Diode, 14...
...Drive circuit, 17...Auxiliary transistor, 18,
19...Resistor.
Claims (1)
たスイツチング電源において、前記主トランジス
タのオフ時にゲートに残留している電荷を引抜く
回路として、補助トランジスタと抵抗器との直列
接続回路を設けたことを特徴とするスイツチング
電源のトランジスタ駆動回路。 A switching power supply using a field effect transistor as the main transistor, characterized in that a series connection circuit of an auxiliary transistor and a resistor is provided as a circuit for extracting the charge remaining in the gate when the main transistor is turned off. Transistor drive circuit for switching power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8531689U JPH0324726U (en) | 1989-07-19 | 1989-07-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8531689U JPH0324726U (en) | 1989-07-19 | 1989-07-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0324726U true JPH0324726U (en) | 1991-03-14 |
Family
ID=31634390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8531689U Pending JPH0324726U (en) | 1989-07-19 | 1989-07-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0324726U (en) |
-
1989
- 1989-07-19 JP JP8531689U patent/JPH0324726U/ja active Pending
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