JPS6289839U - - Google Patents
Info
- Publication number
- JPS6289839U JPS6289839U JP18235585U JP18235585U JPS6289839U JP S6289839 U JPS6289839 U JP S6289839U JP 18235585 U JP18235585 U JP 18235585U JP 18235585 U JP18235585 U JP 18235585U JP S6289839 U JPS6289839 U JP S6289839U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- reverse bias
- bias winding
- resistor
- transformer
- 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 8
- 230000000903 blocking effect Effects 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 1
Description
第１図は本考案によるブロツキング発振回路の
一実施例を示す回路図、第２図は本考案による回
路のトランジスタオン期間のベース電流の変化を
示す図、第３図は従来のブロツキング発振回路を
示す回路図、第４図は従来による回路のトランジ
スタオン期間のベース電流の変化を示す図である
。
１……直流電源、２……スイツチ、３……トラ
ンス、３１……リセツト巻線、３２……駆動巻線
、３３……ベース制御巻線、３４……出力巻線、
３５……逆バイアス用巻線、４……リセツト用ダ
イオード、５……起動用抵抗器、６……トランジ
スタ、７……逆バイアス電圧保護用ダイオード、
８……ベース電流制限用抵抗器、９……ベース回
路用コンデンサ、１０……負荷抵抗、１１……電
流制限用抵抗器、１２……逆バイアス回路動作電
圧バイアス用ツエナーダイオード、１３……リセ
ツト時電流ブロツク用ダイオード。
FIG. 1 is a circuit diagram showing an embodiment of the blocking oscillator circuit according to the present invention, FIG. 2 is a diagram showing changes in base current during the transistor on period of the circuit according to the present invention, and FIG. 3 is a circuit diagram showing a conventional blocking oscillator circuit. The circuit diagram shown in FIG. 4 is a diagram showing changes in base current during the transistor on period of a conventional circuit. 1... DC power supply, 2... Switch, 3... Transformer, 31... Reset winding, 32... Drive winding, 33... Base control winding, 34... Output winding,
35... Reverse bias winding, 4... Reset diode, 5... Starting resistor, 6... Transistor, 7... Reverse bias voltage protection diode,
8... Base current limiting resistor, 9... Base circuit capacitor, 10... Load resistor, 11... Current limiting resistor, 12... Zener diode for reverse bias circuit operating voltage bias, 13... Reset Diode for current block.
Claims (1)
ロツクキング発振回路において、前記トランスに
逆バイアス用巻線を設け、前記トランジスタがオ
ン状態のときに前記逆バイアス用巻線の負極性が
現われる側の端子に、ダイオードとツエナーダイ
オードと抵抗器を直列に接続し、該抵抗器の他端
を前記トランジスタのベースに接続すると共に、
前記逆バイアス用巻線の正極性が現われる側の端
子を直流電源の負極側に接続するようにしたこと
を特徴とするブロツキング発振回路。 In a blocking oscillation circuit configured by combining a transformer and a transistor, the transformer is provided with a reverse bias winding, and a diode is connected to a terminal on the side where the negative polarity of the reverse bias winding appears when the transistor is in an on state. A Zener diode and a resistor are connected in series, and the other end of the resistor is connected to the base of the transistor,
A blocking oscillation circuit characterized in that the terminal on the side where the positive polarity of the reverse bias winding appears is connected to the negative electrode side of a DC power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18235585U JPS6289839U (en) | 1985-11-27 | 1985-11-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18235585U JPS6289839U (en) | 1985-11-27 | 1985-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6289839U true JPS6289839U (en) | 1987-06-09 |
Family
ID=31128075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18235585U Pending JPS6289839U (en) | 1985-11-27 | 1985-11-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6289839U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5870627A (en) * | 1981-10-23 | 1983-04-27 | Hitachi Ltd | Self-oscillating circuit |
-
1985
- 1985-11-27 JP JP18235585U patent/JPS6289839U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5870627A (en) * | 1981-10-23 | 1983-04-27 | Hitachi Ltd | Self-oscillating circuit |