JPS619681U - Solenoid valve drive circuit - Google Patents
Solenoid valve drive circuitInfo
- Publication number
- JPS619681U JPS619681U JP9322684U JP9322684U JPS619681U JP S619681 U JPS619681 U JP S619681U JP 9322684 U JP9322684 U JP 9322684U JP 9322684 U JP9322684 U JP 9322684U JP S619681 U JPS619681 U JP S619681U
- Authority
- JP
- Japan
- Prior art keywords
- solenoid valve
- drive circuit
- excitation coil
- electromagnetic valve
- valve drive
- 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
Landscapes
- Magnetically Actuated Valves (AREA)
- Dc-Dc Converters (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の一実施例を示した回路プロツク図、第
２図は第１図の実施例の信号波形および電磁弁ストロー
ク変化を示したタイムチャート、第３図は第１図の実施
例におけるパルス幅変調信号の発生を示したタイムチャ
ート、第４図は従来回路の説明図、第５図は従来回路に
おける信号波形及び電磁弁ストローク変化を示したタイ
ムチャートである。
１０：パルス幅変調回路、１２：電流指令回．路、１３
：三角波発生回路、１４，１５：比較器、１６．１７：
駆動トランジスタ、１８：電磁弁励磁コイル、１９：直
流電源、２０：駆動電流検出抵抗（微小抵抗）、２１，
２２：抵抗、２４：コンデンサ。Fig. 1 is a circuit block diagram showing an embodiment of the present invention, Fig. 2 is a time chart showing signal waveforms and changes in solenoid valve stroke in the embodiment of Fig. 1, and Fig. 3 is an implementation of Fig. 1. FIG. 4 is an explanatory diagram of a conventional circuit, and FIG. 5 is a time chart showing changes in signal waveforms and solenoid valve strokes in the conventional circuit. 10: Pulse width modulation circuit, 12: Current command times. Road, 13
: Triangular wave generation circuit, 14, 15: Comparator, 16.17:
Drive transistor, 18: Solenoid valve excitation coil, 19: DC power supply, 20: Drive current detection resistor (microresistance), 21,
22: Resistor, 24: Capacitor.
Claims (1)
による駆動トランジスタのチョツパ制御で駆動し、前記
電磁弁励磁コイルに直列に挿入した微小抵抗の検出電圧
をフィードバックして電磁弁励磁コイルに流れる駆動電
流を制御する電磁弁駆動回路において、 前記駆動トランジスタと並列に、トランジスタカットオ
フ時に前記電磁弁励磁コイルに逆電圧を印加するコンデ
ンサを接続したことを特徴とする電磁弁駆動回路。[Claims for Utility Model Registration] Using a single power source, a solenoid valve excitation coil is driven by chopper control of a drive transistor using a pulse width modulation signal, and a voltage detected by a microresistance inserted in series with the solenoid valve excitation coil is fed back. In the electromagnetic valve drive circuit that controls the drive current flowing through the electromagnetic valve excitation coil, the electromagnetic valve drive circuit is characterized in that a capacitor that applies a reverse voltage to the electromagnetic valve excitation coil when the transistor is cut off is connected in parallel with the drive transistor. Solenoid valve drive circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9322684U JPS619681U (en) | 1984-06-23 | 1984-06-23 | Solenoid valve drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9322684U JPS619681U (en) | 1984-06-23 | 1984-06-23 | Solenoid valve drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS619681U true JPS619681U (en) | 1986-01-21 |
Family
ID=30650713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9322684U Pending JPS619681U (en) | 1984-06-23 | 1984-06-23 | Solenoid valve drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS619681U (en) |
-
1984
- 1984-06-23 JP JP9322684U patent/JPS619681U/en active Pending
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