JPH01147687U - - Google Patents
Info
- Publication number
- JPH01147687U JPH01147687U JP4255988U JP4255988U JPH01147687U JP H01147687 U JPH01147687 U JP H01147687U JP 4255988 U JP4255988 U JP 4255988U JP 4255988 U JP4255988 U JP 4255988U JP H01147687 U JPH01147687 U JP H01147687U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- power supply
- supply circuit
- switching power
- main transistor
- 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
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図は従来例を示す回路図である。
Ｖｉ……入力電圧、Ｑ１……主トランジスタ、
Ｑ２……第２のトランジスタ、Ｌ……コイル。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a circuit diagram showing a conventional example. Vi...Input voltage, Q1 ...Main transistor,
Q2 ...second transistor, L...coil.
Claims (1)
、主トランジスタがオン時にゲート・ドレイン間
またはベース・エミツタ間に蓄積した電荷を主ト
ランジスタのオフ時に放電させる第２のトランジ
スタとを備えたスイツチング電源回路において、
第２のトランジスタのベースを、主トランジスタ
がオンの時に通電されるコイルを介して接地した
ことを特徴とするスイツチング電源回路。 (2) 該コイルと直列に抵抗を挿入した請求項１
のスイツチング電源回路。[Claims for Utility Model Registration] (1) A main transistor that intermittents DC input voltage, and a second transistor that discharges the charge accumulated between the gate and drain or between the base and emitter when the main transistor is turned on, when the main transistor is turned off. In a switching power supply circuit equipped with a transistor,
A switching power supply circuit characterized in that the base of the second transistor is grounded via a coil that is energized when the main transistor is on. (2) Claim 1 in which a resistor is inserted in series with the coil.
switching power supply circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988042559U JPH0619325Y2 (en) | 1988-03-30 | 1988-03-30 | Switching power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988042559U JPH0619325Y2 (en) | 1988-03-30 | 1988-03-30 | Switching power supply circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01147687U true JPH01147687U (en) | 1989-10-12 |
| JPH0619325Y2 JPH0619325Y2 (en) | 1994-05-18 |
Family
ID=31268971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988042559U Expired - Lifetime JPH0619325Y2 (en) | 1988-03-30 | 1988-03-30 | Switching power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0619325Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62140512A (en) * | 1985-12-13 | 1987-06-24 | Yokogawa Electric Corp | Driving circuit for mosfet |
-
1988
- 1988-03-30 JP JP1988042559U patent/JPH0619325Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62140512A (en) * | 1985-12-13 | 1987-06-24 | Yokogawa Electric Corp | Driving circuit for mosfet |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0619325Y2 (en) | 1994-05-18 |