EP0086689B1 - Circuit d'alimentation d'un contact de commande et son application à la commande d'une temporisation de repos d'un relais - Google Patents

Circuit d'alimentation d'un contact de commande et son application à la commande d'une temporisation de repos d'un relais Download PDF

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Publication number
EP0086689B1
EP0086689B1 EP83400210A EP83400210A EP0086689B1 EP 0086689 B1 EP0086689 B1 EP 0086689B1 EP 83400210 A EP83400210 A EP 83400210A EP 83400210 A EP83400210 A EP 83400210A EP 0086689 B1 EP0086689 B1 EP 0086689B1
Authority
EP
European Patent Office
Prior art keywords
circuit
diode
resistor
contact
supply
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.)
Expired
Application number
EP83400210A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0086689A1 (fr
Inventor
Philippe Barthelemy
Gilles Baurand
François Roussel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telemecanique SA
Original Assignee
Telemecanique Electrique SA
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 Telemecanique Electrique SA filed Critical Telemecanique Electrique SA
Priority to AT83400210T priority Critical patent/ATE14809T1/de
Publication of EP0086689A1 publication Critical patent/EP0086689A1/fr
Application granted granted Critical
Publication of EP0086689B1 publication Critical patent/EP0086689B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/60—Auxiliary means structurally associated with the switch for cleaning or lubricating contact-making surfaces
    • H01H1/605—Cleaning of contact-making surfaces by relatively high voltage pulses
    • 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
    • H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
    • H01H47/18—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for introducing delay in the operation of the relay

Definitions

  • the present invention relates to a power supply circuit for a control contact and its application to the control of a rest time delay of a relay.
  • control contact K When you want to use a contact K to control a function on a device supplied with AC or DC power, including electronic or non-electronic components requiring a power supply and at least one control and having to work in a wide voltage range (24 V to 240 V for example), in order to have good contact reliability, the control contact K must be traversed by a current of minimum intensity I K of the order of approximately 10 mA for a standard contact.
  • the object of the present invention is to provide a circuit making it possible to supply a control contact K with sufficient current while maintaining a low current of current in the control circuit regardless of the value of the voltage connected to the terminals of the circuit. .
  • Another object of the invention is its application to a rest time delay of a relay.
  • the supply circuit of a contact K controlling a function with at least one delay or a storage in a use circuit U supplied by an alternating voltage on its input terminals E, 44, and of which the output D is controlled by the output of an integrated circuit L also connected to the other terminal 45 of the output of the use circuit, said circuit being controlled by at least one control circuit 24 supplying a constant voltage and being supplied by a supply circuit 23 supplying a practically constant current to the integrated circuit, is characterized in that the control circuit is connected to the network voltage by means of a series circuit formed by a first resistor, a first diode and a contact, while the current supply circuit is connected to the mains voltage either by a second diode mounted in reverse and the contact, or by a first Zener diode, a third diode and a second res istance.
  • FIG. 1 represents a use circuit U connected by its two terminals E, 44 to a voltage source which can vary over a wide range. For example, this range can extend from 24 V to 240 V.
  • the input terminal E is also connected by a switch K to a diode 31 connected by its cathode to a resistor 32 of high ohmic value and a circuit 24 supplying at C a practically continuous and stabilized control voltage Uc.
  • Circuit 24 is connected to terminal 45 of the use circuit.
  • a series circuit constituted by a diode 29 whose cathode is connected to the cathode of a Zener diode 30 which is connected by its anode to the cathode of a diode 26 whose anode is connected to the anode of diode 31.
  • the integrated circuit can be of different kinds, as well as the use circuit.
  • the integrated circuit will consist of an oscillator and a pulse counter serving as a time delay and the use circuit may be a relay, the supply of which is controlled by a static switch triggered by the time delay: this example d 'application is not limiting.
  • the circuit described above makes it possible, from an alternating or direct voltage source varying over a wide range, to control a circuit by a switch K which will always be traversed by a current sufficient to ensure good reliability in contact, while limiting the energy dissipated in the control and supply circuit 24.
  • the circuit of FIG. 1 further comprises a signaling circuit 25 comprising a light-emitting diode 252, connected at 45, a resistor 251, connected to point A, a diode 253 connected to the output 11 of the integrated circuit L and a diode 254 connected at output 2 of circuit L, which is itself connected by an internal inverter to circuit L at point C.
  • a signaling circuit 25 comprising a light-emitting diode 252, connected at 45, a resistor 251, connected to point A, a diode 253 connected to the output 11 of the integrated circuit L and a diode 254 connected at output 2 of circuit L, which is itself connected by an internal inverter to circuit L at point C.
  • the diode 252 only lights up when the contact K is open and the output 11 is at the high level.
  • FIG. 2 represents a rest timer comprising 4 input terminals 41 to 44, among which the terminals 43 and 44 are connected in series by the coil of the relay to be controlled, with a source of alternating or direct voltage.
  • Terminal 42 will be connected directly to one of terminals P of the AC voltage source, while terminal 41 is connected to terminal P of the source by a contact K for timing control.
  • a diode bridge 47, 48, 49, 50 constituting a rectifier intended to make the current unidirectional in the thyristor 51.
  • a thyristor 51 is connected by its anode to the terminal 46 of the diode bridge output and by its cathode to the terminal 45 of the diode bridge output.
  • a series circuit, resistor 52, capacitor 53, is connected in parallel to the thyristor to protect it against high dV / dt at power up.
  • a clipper 54 is also connected in parallel to the thyristor to protect it against excessively high overvoltages, the clipping voltage being of the order of 600 volts.
  • the thyristor trigger is connected, via a resistor 55 in parallel with a capacitor 56, to the cathode of the thyristor connected to terminal 45.
  • this trigger is also connected by a resistor 17 to the output 11 of a circuit 18 CMOS "EFCIS of the type EFB8305, based on the counting of pulses supplied by an adjustable oscillator.
  • the potentiometer allows you to make an initial adjustment of the oscillator frequency.
  • the wiring of the CMOS circuit carried out once and for all during manufacture makes it possible to choose the number of pulses counted, at the end of which counter no longer supplies the trigger of the thyristor.
  • the counting control signal is given.
  • the thyristor 51 after an adjustable time, stops driving, no longer supplying the load to be controlled.
  • the CMOS circuit includes an automatic internal reset of the counting flip-flops each time the supply voltage disappears.
  • Circuit 18 must be connected by its terminals 8, 9, 12 to terminal 45. To operate, circuit 18 must be supplied by a supply circuit whose output A is connected to terminals 16, 13, 10 of circuit 18 , and controlled by a control circuit 24 whose output C is connected to terminals 1, 14, 15 of circuit 18.
  • a resistor 27 for limiting the current in the event of an overvoltage is connected to the terminal 42 on the one hand and, on the other hand, to the terminal 45 of the bridge by a clipper 28 protecting the supply circuit.
  • the point common to the resistor 27 and to the clipper 28 is connected to the anode of a diode 29 carrying out a single alternation rectification whose cathode is connected to a Zener diode 30 mounted in reverse and whose anode is connected, on the one hand, to the cathode of a diode 26 and, on the other hand, to the current supply circuit 23 constituted by the collector of an NPN transistor 234 whose emitter is connected to the collector of a second NPN transistor 233, by a diode 235 for protection against parasites and overvoltages, connected directly.
  • the emitter of the second transistor 233 is connected to terminal 45 by a resistor 237 in series with a diode 238 connected directly, avoiding reverse polarization of the base-emitter junction of transistor 233 when the network is cut off, and a capacitor 239 serving to maintain a stabilized level of supply.
  • the collector of the first transistor 234 is connected by a resistor 230 to its base which is itself connected to the base of the second transistor 233 by a resistor 231.
  • the base of the second transistor 233 is connected to terminal 45 by a Zener stabilization diode 236, mounted in reverse.
  • the common point A to the diode 238 and to the capacitor 239 is connected to the power supply inputs of the CMOS circuit.
  • the anode of the diode 26 is connected, on the one hand, to the terminal 41 and, on the other hand, to the anode of a diode 31, performing a single alternation rectification.
  • the cathode of this rectifier diode is connected by a resistor 32 at point C which is connected to the control input of the CMOS circuit on the one hand, and, on the other hand, to terminal 45 by a circuit 24 providing a voltage stabilized and smoothed control Vc, consisting of a capacitor 243, a Zener diode 244, a resistor 245, connected in parallel.
  • a signaling circuit 25 is connected by a resistor 251 to the supply point A, by the cathode of a light-emitting diode 252 at terminal 45, by two diodes 253 and 254, the cathodes of which are respectively connected to the outputs 11 and 2 of the CMOS circuit and each having the anode connected to the common point of the resistor 251 and the diode 252.
  • circuit 18 is connected via an internal inverter circuit to circuit 18 to terminal 1, on which the control signal arrives.
  • the diodes 29, 30, 26 are mounted so that the diode 29 is under direct voltage and the diode 26 under reverse voltage when the contact K is open, which allows the current passing through the terminal 42 to supply the supply circuit 23, while the control circuit is not supplied.
  • the current which comes from contact K is used to supply on the one hand, the control circuit 24 and, on the other hand, the supply circuit 23 by the diode 26.
  • the thyristor conducts and supplies power to the relay, as long as the contact K remains closed.
  • the CMOS circuit supplied by the supply circuit 23, will count the pulses. After an adjustable time, corresponding to a number. determined by pulses to be counted, the circuit no longer supplies the thyristor trigger and the coil B of the relay, consequently, is no longer supplied.

Landscapes

  • Relay Circuits (AREA)
  • Electronic Switches (AREA)
  • Keying Circuit Devices (AREA)
  • Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
  • Air Bags (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Lifting Devices For Agricultural Implements (AREA)
  • Electric Vacuum Cleaner (AREA)
EP83400210A 1982-02-12 1983-01-31 Circuit d'alimentation d'un contact de commande et son application à la commande d'une temporisation de repos d'un relais Expired EP0086689B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83400210T ATE14809T1 (de) 1982-02-12 1983-01-31 Versorgungsschaltung fuer einen steuerkontakt und deren anwendung bei der steuerung der abfallverzoegerung eines relais.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8202356A FR2521771A1 (fr) 1982-02-12 1982-02-12 Circuit d'alimentation d'un contact de commande et son application a la commande d'une temporisation de repos d'un relais
FR8202356 1982-02-12

Publications (2)

Publication Number Publication Date
EP0086689A1 EP0086689A1 (fr) 1983-08-24
EP0086689B1 true EP0086689B1 (fr) 1985-08-07

Family

ID=9270954

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83400210A Expired EP0086689B1 (fr) 1982-02-12 1983-01-31 Circuit d'alimentation d'un contact de commande et son application à la commande d'une temporisation de repos d'un relais

Country Status (9)

Country Link
US (1) US4480194A (es)
EP (1) EP0086689B1 (es)
JP (1) JPS58147916A (es)
AT (1) ATE14809T1 (es)
CA (1) CA1194588A (es)
DE (1) DE3360485D1 (es)
ES (1) ES8401279A1 (es)
FR (1) FR2521771A1 (es)
NO (1) NO159046C (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2582881B1 (fr) * 1985-05-31 1995-01-06 Commissariat Energie Atomique Relais electronique statique autorisant ou etablissant un courant de sens quelconque ou un courant alternatif dans un circuit d'utilisation.
FR2689258B1 (fr) * 1992-03-26 1996-12-13 Cegelec Module d'entree d'information par contact electrique, pour installation de controle/commande.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3029351A (en) * 1958-12-19 1962-04-10 Ibm Contact driver circuit
US3281829A (en) * 1963-12-20 1966-10-25 Burroughs Corp Contact wetter and encoder
DE1690026C3 (de) * 1967-08-10 1979-02-01 Siemens Ag, 1000 Berlin Und 8000 Muenchen Schaltungsanordnung zur verzögerten Durchführung eines Schaltvorganges
US3814949A (en) * 1972-09-18 1974-06-04 S Weinberg Timing control device
US3784881A (en) * 1972-10-10 1974-01-08 Cutler Hammer Inc Off-delay timing apparatus
DE3009011C2 (de) * 1980-03-08 1983-03-24 Agfa-Gevaert Ag, 5090 Leverkusen Schaltungsanordnung zur Steuerung von Kamerafunktionen
US4415943A (en) * 1982-04-21 1983-11-15 Tii Industries, Inc. Equipment protector and energy saving apparatus

Also Published As

Publication number Publication date
ES519712A0 (es) 1983-12-01
US4480194A (en) 1984-10-30
JPS58147916A (ja) 1983-09-02
NO830473L (no) 1983-08-15
ES8401279A1 (es) 1983-12-01
ATE14809T1 (de) 1985-08-15
FR2521771B1 (es) 1984-04-13
DE3360485D1 (en) 1985-09-12
CA1194588A (fr) 1985-10-01
NO159046B (no) 1988-08-15
NO159046C (no) 1988-11-23
EP0086689A1 (fr) 1983-08-24
FR2521771A1 (fr) 1983-08-19

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