JPH01123482U - - Google Patents
Info
- Publication number
- JPH01123482U JPH01123482U JP1959488U JP1959488U JPH01123482U JP H01123482 U JPH01123482 U JP H01123482U JP 1959488 U JP1959488 U JP 1959488U JP 1959488 U JP1959488 U JP 1959488U JP H01123482 U JPH01123482 U JP H01123482U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- power supply
- capacitor
- secondary winding
- supply device
- 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
Landscapes
- Protection Of Static Devices (AREA)
- Dc-Dc Converters (AREA)
Description
第１図は本考案に係る直流電源装置の一実施例
の要部の回路図、第２図は従来の直流電源装置の
要部の回路図、第３図は直流電源装置の出力電圧
―電流特性図、第４図は本考案と従来とを比較し
た直流電源装置の各部の電圧―時間特性図である
。
１：出力トランスの二次巻線、２：ダイオード
、４：抵抗器、６：放電抵抗器、８：第１のトラ
ンジスタ、１１：第２のトランジスタ、１３：起
動用コンデンサ、２１：外部スイツチ。
Figure 1 is a circuit diagram of the main parts of an embodiment of the DC power supply according to the present invention, Figure 2 is a circuit diagram of the main parts of a conventional DC power supply, and Figure 3 is the output voltage vs. current of the DC power supply. FIG. 4 is a voltage-time characteristic diagram of each part of a DC power supply device comparing the present invention with a conventional one. 1: Secondary winding of output transformer, 2: Diode, 4: Resistor, 6: Discharge resistor, 8: First transistor, 11: Second transistor, 13: Starting capacitor, 21: External switch.
Claims (1)
する第１のトランジスタと、外部スイツチのＯＮ
によつて、起動用コンデンサの充電電流で、起動
しかつ上記第１のトランジスタをＯＮさせる第２
のトランジスタを具備してなる直流電源装置にお
いて、出力トランスの二次巻線の一端に接続した
ダイオードと抵抗器の直列回路および上記出力ト
ランスの二次巻線の他端に接続した放電抵抗器に
上記コンデンサを接続し、スイツチング電源部の
発信停止と同時に上記コンデンサの電荷を上記放
電抵抗器を通じて放電させることを特徴とする直
流電源装置。 A first transistor with a cutoff function for output short circuit or overcurrent protection, and an external switch ON
The second transistor is activated by the charging current of the starting capacitor and turns on the first transistor.
In a DC power supply device comprising a transistor, a series circuit of a diode and a resistor connected to one end of the secondary winding of the output transformer, and a discharge resistor connected to the other end of the secondary winding of the output transformer. A DC power supply device, characterized in that the capacitor is connected and the electric charge of the capacitor is discharged through the discharge resistor at the same time as the switching power supply section stops transmitting power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1959488U JPH0649112Y2 (en) | 1988-02-17 | 1988-02-17 | DC power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1959488U JPH0649112Y2 (en) | 1988-02-17 | 1988-02-17 | DC power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01123482U true JPH01123482U (en) | 1989-08-22 |
| JPH0649112Y2 JPH0649112Y2 (en) | 1994-12-12 |
Family
ID=31235242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1959488U Expired - Lifetime JPH0649112Y2 (en) | 1988-02-17 | 1988-02-17 | DC power supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0649112Y2 (en) |
-
1988
- 1988-02-17 JP JP1959488U patent/JPH0649112Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0649112Y2 (en) | 1994-12-12 |
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