CN1089707A - Adopt the driving circuit for electromagnetic valve of thermistor - Google Patents
Adopt the driving circuit for electromagnetic valve of thermistor Download PDFInfo
- Publication number
- CN1089707A CN1089707A CN 93112161 CN93112161A CN1089707A CN 1089707 A CN1089707 A CN 1089707A CN 93112161 CN93112161 CN 93112161 CN 93112161 A CN93112161 A CN 93112161A CN 1089707 A CN1089707 A CN 1089707A
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- circuit
- electromagnetic valve
- driving circuit
- driving
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Abstract
A kind of driving circuit for electromagnetic valve that adopts PTC belongs to drive circuit.This circuit adopts a PTC element and a capacitor to be in parallel, and serial connection is gone in the AC power circuit, removes to drive solenoid valve after rectification becomes direct current.This circuit has saved the starting circuit in the traditional circuit, so saved components and parts, cost can reduce more than 50%; Use this circuit can improve the starting characteristic of circuit, reach energy-conservation purpose, thereby can be used for driving various types of solenoid valves and relay widely.
Description
The present invention relates to the driving circuit for electromagnetic valve of a kind of PTC of employing, specifically is exactly the designed a kind of driving circuit for electromagnetic valve of resistance-temperature characteristics that utilizes the PTC stupalith.
The switch motion of solenoid valve is fixed against the adhesive and the release of electromagnet, and required to keep current ratio less for its electromagnet coil after the general adhesive, but the inrush current of the electromagnet coil of flowing through when adhesive is very big, so need drive circuit to provide startup big electric current.Existing driving circuit for electromagnetic valve adopts two-supply circuit [seeing MQ1-3N type driving circuit for electromagnetic valve] usually, comprises main power circuit and starts power circuit.Start control relay of connection in the power circuit, serial connection is gone in the main power circuit after the contact of this relay and the capacitor parallel connection, and the load in the main power circuit promptly is the electromagnet coil of electromagnetic valve switch.When solenoid valve begins to start, start the at first adhesive of relay in the power circuit, contact switch is the capacitor short-circuit in the main power circuit loop, thereby offers the big driving current of electromagnet coil in the solenoid valve.This drive circuit has been owing to adopted two-supply circuit, so used components and parts are more, the cost height, is unfavorable for integral miniaturization; The control relay that adopts in the circuit is a contact switch in addition, makes that the starting characteristic of circuit is bad.
It is few that the object of the invention provides a kind of used element, simple in structure and driving circuit for electromagnetic valve that starting characteristic is good.
The present invention adopts novel semi-conductor pottery functional material-PTC element, has utilized its special R-T characteristic.Under the normal temperature situation, the PTC element is low-resistance, and along with temperature is elevated to certain certain value (material Curie temperature), its resistance is step and raises, but a transition 3-5 order of magnitude.This invention drive circuit is to be in parallel by a PTC element and a capacitor, and serial connection is gone in the AC power circuit, behind bridge rectifier interchange is become direct current, connects in DC loop as the electromagnet coil on the solenoid valve of load.
The present invention simplifies circuit greatly, thereby has saved components and parts owing to adopting the PTC element to save starting circuit, and cost can reduce more than 50% than originally, and can reduce overall volume.Because the PTC element is the contact of non-contact, makes starting characteristic improve, and then reaches energy-conservation purpose.Fig. 1 is drive circuit figure of the present invention: capacitor 1 and semiconductive ceramic functional element 2 are in parallel and seal in the ac power supply circuit, become direct current after bridge rectifier 3 rectifications, and the electromagnet coil 4 on the solenoid valve inserts in the DC loop as load.
Embodiment 1: C=5 μ F in the circuit; The Curie temperature of PTC element is 240 ℃, and the normal temperature resistance is 300 Ω; Be used for driving MQ1-3N type solenoid valve.
Embodiment 2: C=1.5 μ F in the circuit; The Curie temperature of PTC element is 180 ℃, and the normal temperature resistance is 1K Ω; Be used for driving GDC-J type solenoid valve.
Claims (1)
1, a kind of driving circuit for electromagnetic valve that adopts PTC, after rectification, become DC loop by ac power supply circuit, be serially connected with electromagnet winding in the DC circuit, after it is characterized by a PTC element and a capacitor and being in parallel, be serially connected in the ac power supply circuit as the solenoid valve of load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93112161 CN1030621C (en) | 1993-09-14 | 1993-09-14 | Driving circuit for electromagnetic valve making use of thermosensitive resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93112161 CN1030621C (en) | 1993-09-14 | 1993-09-14 | Driving circuit for electromagnetic valve making use of thermosensitive resistor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1089707A true CN1089707A (en) | 1994-07-20 |
| CN1030621C CN1030621C (en) | 1996-01-03 |
Family
ID=4989891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93112161 Expired - Fee Related CN1030621C (en) | 1993-09-14 | 1993-09-14 | Driving circuit for electromagnetic valve making use of thermosensitive resistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1030621C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291384A (en) * | 2013-06-06 | 2013-09-11 | 杭州和利时自动化有限公司 | Driving circuit of electromagnetic valve |
| CN103322275A (en) * | 2013-06-26 | 2013-09-25 | 中国人民解放军军事交通学院 | Pulse electromagnetic valve control circuit based on electromagnetic valve |
-
1993
- 1993-09-14 CN CN 93112161 patent/CN1030621C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291384A (en) * | 2013-06-06 | 2013-09-11 | 杭州和利时自动化有限公司 | Driving circuit of electromagnetic valve |
| CN103322275A (en) * | 2013-06-26 | 2013-09-25 | 中国人民解放军军事交通学院 | Pulse electromagnetic valve control circuit based on electromagnetic valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1030621C (en) | 1996-01-03 |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |