JPS6215943U - - Google Patents
Info
- Publication number
- JPS6215943U JPS6215943U JP10779185U JP10779185U JPS6215943U JP S6215943 U JPS6215943 U JP S6215943U JP 10779185 U JP10779185 U JP 10779185U JP 10779185 U JP10779185 U JP 10779185U JP S6215943 U JPS6215943 U JP S6215943U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- base
- transistor
- switching transistor
- resistor
- 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
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Dot-Matrix Printers And Others (AREA)
- Impact Printers (AREA)
- Control Of Electrical Variables (AREA)
- Continuous-Control Power Sources That Use Transistors (AREA)
Description
第１図は本考案の実施例を示す回路図、第２図
は実施例の各部の波形を示すタイミングチヤート
である。
主な図番の説明、１……マグネツトコイル、２
……駆動トランジスタ、４……バツフア、７……
第１スイツチングトランジスタ、９……ツエナー
ダイオード、１２……第２スイツチングトランジ
スタ、１４……第３スイツチングトランジスタ。
FIG. 1 is a circuit diagram showing an embodiment of the present invention, and FIG. 2 is a timing chart showing waveforms of various parts of the embodiment. Explanation of main drawing numbers, 1...Magnetic coil, 2
...Drive transistor, 4...Buffer, 7...
1st switching transistor, 9... Zener diode, 12... second switching transistor, 14... third switching transistor.
Claims (1)
、該マグネツトコイルに直列に接続された駆動ト
ランジスタと、第２電源を動作電源とし、入力さ
れる制御信号を前記駆動トランジスタのベースに
印加するバツフアとを備え、該バツフアの動作保
障電圧が前記駆動トランジスタのスレシヨルド電
圧より高いマグネツト駆動回路において、エミツ
タコレクタ路が抵抗と直列に前記第２電源の電源
端子に接続され、エミツタベース間が抵抗により
接続され、該ベースには定電圧素子が接続された
第１スイツチングトランジスタと、エミツタコレ
クタ路が負荷抵抗を介して前記第２電源の電源端
子に接続され、前記第１スイツチングトランジス
タの出力によりオンオフ制御される第２スイツチ
ングトランジスタと、前記負荷抵抗に接続された
前記第２スイツチングトランジスタの出力端がベ
ースに接続され、エミツタコレクタ路が前記駆動
トランジスタのベースに接続された第３スイツチ
ングトランジスタとを設けたことを特徴とするマ
グネツト駆動回路。 A magnet coil to which a first power supply voltage is supplied, a drive transistor connected in series to the magnet coil, and a buffer that uses a second power supply as an operating power supply and applies an input control signal to the base of the drive transistor. In the magnet drive circuit, the emitter collector path is connected to the power supply terminal of the second power supply in series with a resistor, and the emitter-base is connected by the resistor. A first switching transistor has a constant voltage element connected to its base, and an emitter collector path is connected to the power supply terminal of the second power supply via a load resistor, and the output of the first switching transistor a second switching transistor that is controlled on and off; and a third switch, the output terminal of the second switching transistor connected to the load resistor being connected to the base, and the emitter collector path being connected to the base of the driving transistor. 1. A magnet drive circuit characterized by being provided with a magnetic transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10779185U JPS6215943U (en) | 1985-07-15 | 1985-07-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10779185U JPS6215943U (en) | 1985-07-15 | 1985-07-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6215943U true JPS6215943U (en) | 1987-01-30 |
Family
ID=30984392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10779185U Pending JPS6215943U (en) | 1985-07-15 | 1985-07-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6215943U (en) |
-
1985
- 1985-07-15 JP JP10779185U patent/JPS6215943U/ja active Pending
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