WO2001022461A1 - Circuit source de commande par impulsions - Google Patents

Circuit source de commande par impulsions Download PDF

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Publication number
WO2001022461A1
WO2001022461A1 PCT/CN2000/000277 CN0000277W WO0122461A1 WO 2001022461 A1 WO2001022461 A1 WO 2001022461A1 CN 0000277 W CN0000277 W CN 0000277W WO 0122461 A1 WO0122461 A1 WO 0122461A1
Authority
WO
WIPO (PCT)
Prior art keywords
control unit
thermal element
source circuit
voltage
drive source
Prior art date
Application number
PCT/CN2000/000277
Other languages
English (en)
Chinese (zh)
Inventor
Rongqi Li
Shaohua Wang
Original Assignee
Beijing Hi-Tone Technology Co., Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beijing Hi-Tone Technology Co., Ltd. filed Critical Beijing Hi-Tone Technology Co., Ltd.
Priority to AU72669/00A priority Critical patent/AU7266900A/en
Publication of WO2001022461A1 publication Critical patent/WO2001022461A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil

Definitions

  • the present invention relates to a pulse drive source circuit, and more particularly to a circuit for driving a magnetic holding relay.
  • Many actuators such as magnetic latching relays, need to be driven by low-voltage pulsed current sources.
  • a known method is to use a transformer to reduce the voltage to produce a low-voltage and high-power power supply, which is then powered by a drive circuit and generates a high-current pulse drive source through a drive circuit to drive the actuator. This method requires a low-voltage, high-current power supply. It not only increases the cost, but also increases the power consumption and volume.
  • the object of the present invention is to invent a pulse drive source circuit that consumes little or no electrical energy when the actuator is not driven, does not require a low-voltage power source when driving, and can directly obtain driving energy from a higher-voltage power source.
  • Simple and reliable pulse drive source circuit The present invention is implemented as follows: a positive temperature coefficient thermal element Rt (hereinafter referred to as a "thermal element" Rt) that is connected in series with the driven actuator A and meets the voltage requirements and can provide sufficient driving power at room temperature Control unit S.
  • Thermal element" Rt, the driven actuator A and the control unit S are connected in series directly to the power input terminals a and b.
  • the position of the "thermal element” Rt, the driven actuator A, and the control unit S in series can be arbitrary.
  • the control circuit S is just turned on, the "thermosensitive element” Rt is at room temperature, and its own resistance is a small resistance value at room temperature. Through the resistance drop at room temperature, sufficient low-voltage drive current is provided to the driven actuator. Thereafter, as the driving current flows through the "thermosensitive element” Rt, the “thermosensitive element” Rt is heated, the temperature rises, the self resistance increases, and the driving current will decrease.
  • the "thermal element” Rt parameter By selecting the “thermal element” Rt parameter, it is ensured that the voltage drop through the “thermal element” Rt under normal temperature resistance can provide sufficient driving current.
  • the control unit S After the control unit S is turned on, the "thermal element” can be passed.
  • the resistance of the component "RT” at normal temperature, and the pulse drive current generated after the resistance is stepped down in a time increment, effectively and reliably complete the driving task.
  • This model of driving current initially provided, followed by a reduced driving current model meets the driving requirements of general actuators. The reason is that from the initial speed From zero to speed, the acceleration at the beginning is the largest, so the required force is the largest.
  • the actuator with electromagnetic action as the main body has the largest action distance of the electromagnet at the beginning of the action and the largest driving power.
  • the control unit S After the circuit finishes driving, the control unit S is turned off, and the "thermal element" Rt returns to the normal temperature state, preparing for the next driving. If the control unit S- is directly connected due to the failure of the drive circuit, then the temperature increases due to the current flowing through the "thermal element” Rt, the resistance increases, and the current decreases until it finally reaches the temperature, resistance and current balance. At this time, the actual The current flowing will be small, as long as the control unit S resumes normal shutdown, the circuit can still work safely and reliably. When the temperature of the "Thermal Element" Rt rises and the resistance increases, the voltage drop across the "Thermal Element” Rt will increase.
  • a pulse drive source circuit especially a circuit for driving a magnetic holding relay, has a thermal element Rt and a control unit S, which are characterized by-a.
  • the thermal element Rt is connected in series with the control unit S and the driven actuator A After that, directly add to the power supply,
  • the thermal element Rt is a positive temperature coefficient thermal element that meets the requirements of withstand voltage and can provide sufficient driving current at room temperature.
  • the thermal element Rt since the "thermal element" Rt, the driven actuator A, and the control unit S are connected in series, when the control unit S starts, no current flows through the entire circuit, so it consumes little or little Power consumption.
  • the entire circuit When driving, the entire circuit is directly connected to a higher voltage power source to obtain a driving source through the "thermosensitive element" Rt voltage step-down. No additional device is required, so the entire circuit is simple and the cost is low.
  • thermo element Rt is a positive temperature coefficient thermistor, even if the control unit S fails, it can automatically warm itself by outputting sufficient drive current through the current and greatly increase its resistance during the heating process, making the circuit in a small In the current protection state, and after the control unit S is turned off, it returns to normal, so the pulse drive source is safe and reliable, thereby achieving and completing the object of the present invention.
  • the circuit of the present invention is simple, safe and reliable, it can be widely used in fields that require a pulse source to drive less frequently, which require high power consumption, volume and cost. Combined use, especially when the magnetic holding relay needs to be installed in the watt-hour meter
  • Figure 1 is a schematic circuit diagram of the present invention.
  • Fig. 2 is an embodiment of the present invention.
  • Fig. 3 is a third embodiment of the present invention.
  • Fig. 4 is an embodiment of the present invention. The invention is further described below with reference to the drawings.
  • Rt is a positive temperature coefficient thermal element that can provide sufficient driving current at room temperature that meets the requirements of withstand voltage requirements.
  • A is the driven actuator
  • S is the control unit
  • a, b are higher voltage power input terminals, and can be DC. You can also communicate.
  • the control unit S is turned on, the driven actuator A provides a driving current source through the temperature drop of the "thermal element" Rt at room temperature. Thereafter, the "thermal element” Rt will heat up and increase its own resistance value, thereby continuously reducing the driving current. After the control unit S is turned off, the "thermal element” Rt will return to the resistance value at normal temperature and prepare for the next drive.
  • FIG. 2 is an embodiment in which the power supply terminals a and b of the two circuits are directly connected to the AC power source.
  • the control unit S has a control unit S E only in the forward direction and a control only in the reverse direction.
  • Unit S £ control when the control unit S E is turned on, a forward pulse drive source is provided, and when the control unit S is turned on, a reverse pulse drive source is provided.
  • FIG. 3 is another embodiment.
  • the control unit S ⁇ is composed of a unidirectional thyristor (unidirectional thyristor) which is turned on only in the positive half cycle, and the control unit S s is composed of a bidirectional thyristor (triac).
  • FIG. 4 is a third embodiment.
  • the driven actuator A has a voltage stabilizing component Pv and a filtering element C connected in parallel at both ends.

Landscapes

  • Relay Circuits (AREA)

Abstract

Un circuit source de commande par impulsions comporte une résistance autochauffante à coefficient de température positif, connectée en série au circuit commandé. Par la connexion d'un élément unidirectionnel au circuit commandé, une source de commande positive ou négative peut être obtenue. Un circuit spécial réduisant la tension n'est pas requis. Le circuit de l'invention peut notamment être utilisé dans des relais.
PCT/CN2000/000277 1999-09-20 2000-09-15 Circuit source de commande par impulsions WO2001022461A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU72669/00A AU7266900A (en) 1999-09-20 2000-09-15 A pulse driving source circuit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN99119188.9 1999-09-20
CN 99119188 CN1129929C (zh) 1999-09-20 1999-09-20 一种脉冲驱动源电路

Publications (1)

Publication Number Publication Date
WO2001022461A1 true WO2001022461A1 (fr) 2001-03-29

Family

ID=5280751

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2000/000277 WO2001022461A1 (fr) 1999-09-20 2000-09-15 Circuit source de commande par impulsions

Country Status (3)

Country Link
CN (1) CN1129929C (fr)
AU (1) AU7266900A (fr)
WO (1) WO2001022461A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102214536A (zh) * 2010-04-07 2011-10-12 张洪彬 一种节能交流接触器
DE102011050536A1 (de) * 2011-05-20 2012-11-22 Phoenix Contact Gmbh & Co. Kg Steckverbinder
CN103065872B (zh) * 2012-12-20 2015-04-15 华为技术有限公司 控制磁保持接触器的装置
CN105206475B (zh) * 2015-10-28 2017-07-11 哈尔滨工业大学 一种开关控制的磁保持继电器驱动电路

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3916264A (en) * 1974-07-01 1975-10-28 Texas Instruments Inc Time delay apparatus
US4234904A (en) * 1978-07-19 1980-11-18 Lgz Landis & Gyr Zug Ag Process and device for the protection of electrical energy supply systems controlled by means of audio-frequency
US5722632A (en) * 1995-04-20 1998-03-03 Borg-Warner Automotive, Inc. Temperature-compensated exhaust gas recirculation system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3916264A (en) * 1974-07-01 1975-10-28 Texas Instruments Inc Time delay apparatus
US4234904A (en) * 1978-07-19 1980-11-18 Lgz Landis & Gyr Zug Ag Process and device for the protection of electrical energy supply systems controlled by means of audio-frequency
US5722632A (en) * 1995-04-20 1998-03-03 Borg-Warner Automotive, Inc. Temperature-compensated exhaust gas recirculation system

Also Published As

Publication number Publication date
CN1129929C (zh) 2003-12-03
CN1289138A (zh) 2001-03-28
AU7266900A (en) 2001-04-24

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