EP0735804B1 - Electrificateur de clÔture - Google Patents
Electrificateur de clÔture Download PDFInfo
- Publication number
- EP0735804B1 EP0735804B1 EP96400374A EP96400374A EP0735804B1 EP 0735804 B1 EP0735804 B1 EP 0735804B1 EP 96400374 A EP96400374 A EP 96400374A EP 96400374 A EP96400374 A EP 96400374A EP 0735804 B1 EP0735804 B1 EP 0735804B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- terminal
- resistor
- diode
- thyristor
- circuit
- 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 - Lifetime
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05C—ELECTRIC CIRCUITS OR APPARATUS SPECIALLY DESIGNED FOR USE IN EQUIPMENT FOR KILLING, STUNNING, OR GUIDING LIVING BEINGS
- H05C1/00—Circuits or apparatus for generating electric shock effects
- H05C1/04—Circuits or apparatus for generating electric shock effects providing pulse voltages
Definitions
- the present invention relates to energizers of fence supplied from an alternative network of distribution of electrical energy and intended to keep animals or to protect places against intrusions by animals or people.
- the devices offered on the market include general a diode voltage doubler charging a storage capacitor. This capacitor discharges, with a period of about 1.2 s, in the primary of a transformer, thanks to the conduction of one or several thyristors.
- French patent 2,553,972 describes such a device.
- the conduction of the or thyristors by applying a pulse of trigger trigger usually occurs with a random phase with respect to the voltage alternative of the network supplying the energizer, this which has a drawback.
- An object of the present invention is to provide a assembly which avoids transmission to the network of this parasitic pulse without using a circuit filtering.
- the subject of the invention is a fence energizer. powered by an alternative network between a first terminal and a second terminal, supplying a capacitor storage through a doubler of tension including, in series from the first terminal, a capacitor, a first resistor, a first diode and a second resistor, and, in parallel between the second terminal and the point common to the first resistor and at the first diode a second diode, the storage capacitor being able be brutally discharged, in the primary of a transformer whose secondary feeds said fence, by means of a thyristor whose trigger is controlled by a trip circuit, characterized in that the trigger circuit includes a input connected to the common point at the first resistance and at the two diodes, and in that the conduction thyristor is triggered when the first terminal is in the vicinity of its most negative potential by compared to that of the second terminal, so as not to disrupt the network by a spurious signal.
- Figure 1 shows an embodiment of a fence energizer according to the state of the art.
- Figure 2 shows a second embodiment fence energizer according to the state of the art.
- Figure 3 shows the supply voltage of the energizer, disturbed by the impulse of discharge in the case of Figures 1 and 2.
- Figure 4 shows schematically an energizer fence according to the invention.
- Figure 5 shows schematically a partial view of another embodiment of the invention.
- FIG. 6 presents a detailed view of a mode of preferential embodiment of the invention.
- Figure 7 shows a detailed view of another mode of preferred embodiment of the invention.
- Figure 1 shows the electrical diagram of a Current type fence energizer, powered by an alternative network.
- AC voltage power is applied to input terminals 1 and 2 of the assembly.
- diode 3 is conductive.
- a current flows through the diode 3, the resistor 4 and capacitor 5 by charging it to the peak value of the AC supply voltage with the polarity shown in figure 1.
- diode 6 is conductive.
- Part of the charge of the capacitor 5 is transferred to the storage capacitor 7 through resistor 4, diode 6 and resistor 8.
- the process continues until capacitor 7 either charged, with the polarity indicated in figure 1, under a voltage equal to twice the peak value of the AC supply voltage.
- a thyristor principal 9 when it enters conduction, discharge suddenly the capacitor 7 through the primary of a transformer 10.
- the trip circuit generating the trigger pulse in a known manner, with a period of approximately 1.2 s, includes a diac 11, a resistor 12, another resistor 13, a capacitor 14. This tripping circuit has the disadvantage of randomly generate a trigger pulse with respect to the phase of the alternating voltage applied between terminals 1 and 2.
- the energizer manufacturer must then widely dimension resistors 4 and 8 so let them dissipate the power due to this current.
- the impulse current flowing through the capacitor 5, the resistor 4, diode 6, resistor 8 crosses also the power supply network connected to terminals 1 and 2 which generally leads to a level of electromagnetic disturbances above the level limit imposed by standards.
- the manufacturer must then install a very expensive filter to comply with these standards.
- Figure 2 shows the electrical diagram of a fence energizer with a circuit protection against accelerated cadences.
- This protection circuit described in the French patent 2,553,972 includes with respect to the current circuit of the figure 1 several additional elements, one thyristor 15, a diode 16, a diac 17, a resistor 18, a resistor 19 and a capacitor 20.
- the two thyristors 9 and 15 are conductive. It is necessary so that when the thyristor trigger pulse main 9 arrives, capacity 20 is charged to a sufficient level for ignition of thyristor 15 to occur happen simultaneously. This condition ensures that priming close to the main thyristor 9 does not lead to the creation of pulses at the output of the transformer 10 at a high rate incompatible with security.
- the circuit of Figure 2 has drawbacks similar to those encountered with the circuit of figure 1 since the pulse arriving on the trigger of the main thyristor is also random with respect to the voltage phase alternative applied between terminals 1 and 2.
- the figure 3 gives the appearance of alternating voltage applied between terminals 1 and 2 and shows the disturbance 21 existing when the impulse of trigger of main thyristor 9 arrives at the time of maximum of positive alternation.
- the invention proposes to eliminate the two disadvantages of the circuits of FIGS. 1 and 2 by fixing appropriately the phase of the pulse of trigger in relation to the applied alternating voltage between terminals 1 and 2.
- the trigger 22 of the main thyristor 9 receives from trigger circuit 23, via a output 24, a conduction pulse from the main thyristor 9, with a period of about 1.2 s.
- the operating energy of the circuit trigger 23 is taken from the capacitor storage 7 through transformer 10 by via two inputs 25 and 26.
- the voltage at common point between resistor 4, diode 3 and diode 6 is applied to an input 27 of the circuit trigger 23.
- the latter uses the voltage on its input 27 to impose the appearance of a pulse of conduction of the main thyristor 9, on its exit 24 at a time close to the time when the negative alternation of the voltage applied between the terminals 1 and 2 reaches its minimum, i.e. at a instant close to the instant when terminal 1 reaches its most negative potential compared to terminal 2.
- FIG 6 we find the diagram of a energizer with a detailed view of a preferential implementation of the trigger circuit 23 of the main thyristor 9.
- This main thyristor 9 can be connected directly to transformer 10, as in figure 1 or through a thyristor additional 15 as in Figure 2 without the operation of the invention is not changed. Thanks at inputs 25 and 26 of trigger circuit 23 on capacitor 14 charges through resistor 13 in taking energy from the storage capacitor 7 through transformer 10. As long as the voltage across capacitor 14 is less than the threshold voltage of diac 11 the charge of the capacitor 14 continues since no current can flow in the diac 11, the resistor 12, and the pnp transistor 28.
- a main thyristor 9 trigger pulse may appear on exit 24 towards the trigger 22, provided that transistor 28, of the type pnp, be conductive, so that a current crosses its based.
- the current which crosses this junction is fixed by resistance 29 which is subjected to the voltage across the capacitor 14 minus the sum of the voltage across the base / emitter junction of transistor 28, voltage across the Zener diode 30 and the aux voltage diode 31 terminals.
- the choice of the Zener 30 diode forces the transistor 28 to turn on only around a time corresponding to the maximum negative of negative alternation of voltage applied between terminals 1 and 2.
- Diode 31 protects transistor 28 during the positive half-waves of the voltage applied between terminals 1 and 2.
- FIG. 7 we partially find the diagram of an energizer with a detailed view of another preferred embodiment of the circuit.
- Point of energy draw is the only difference existing between the circuit of figure 6 and the circuit of figure 7.
- the energy is taken on terminal 1 through a diode 32 thanks to the input 25 of the trigger circuit 23.
- the capacitor 14 cannot charge and see the voltage at its limits increase only during the alternations positive of the voltage applied between terminals 1 and 2.
- the temporal stability of the trigger is then better than in the case of FIG. 6 since the voltage across capacitor 14 cannot evolve during negative alternations of voltage applied between terminals 1 and 2.
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- Life Sciences & Earth Sciences (AREA)
- Insects & Arthropods (AREA)
- Electronic Switches (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Magnetic Heads (AREA)
- Soil Working Implements (AREA)
- Gas-Insulated Switchgears (AREA)
- Rectifiers (AREA)
- Catching Or Destruction (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Polyesters Or Polycarbonates (AREA)
- Revetment (AREA)
Description
- le circuit de déclenchement du thyristor comporte un transistor dont le collecteur est relié à la gâchette du thyristor, dont l'émetteur est relié au point milieu d'un circuit à résistance et capacité, et dont la base est reliée à ladite entrée, et en ce que ledit transistor est rendu conducteur lorsque la première borne est au voisinage de son potentiel le plus négatif par rapport à celui de la deuxième borne ;
- la gâchette du thyristor est reliée au collecteur du transistor par l'intermédiaire d'un diac et d'une résistance ;
- la base du transistor est reliée à ladite entrée du circuit de déclenchement par l'intermédiaire d'une résistance d'une diode Zener et d'une diode ;
- le circuit à résistance et capacité est monté entre la première borne et la deuxième borne ;
- entre la première borne et la résistance est prévue une diode pour assurer la charge de la capacité pendant les alternances positives de l'alimentation ;
- le circuit à résistance et capacité est monté entre le primaire du transformateur et la deuxième borne.
Claims (7)
- Electrificateur de clôture alimenté par un réseau alternatif entre une première borne (1) et une deuxième borne (2), alimentant un condensateur de stockage (7) par l'intermédiaire d'un doubleur de tension comprenant, en série à partir de la première borne (1), un condensateur (5), une première résistance (4), une première diode (6) et une deuxième résistance (8), et, en parallèle entre la deuxième borne (2) et le point commun à la première résistance (4) et à la première diode (6), une deuxième diode (3), le condensateur de stockage (7) pouvant être brutalement déchargé, dans le primaire d'un transformateur (10) dont le secondaire alimente ladite clôture, au moyen d'un thyristor (9) dont la gâchette est commandée par un circuit de déclenchement (23), caractérisé en ce que le circuit de déclenchement (23) comporte une entrée (27) reliée au point commun à la première résistance (4) et aux deux diodes (3, 6), et en ce que la mise en conduction du thyristor (9) est déclenchée lorsque la première borne (1) est au voisinage de son potentiel le plus négatif par rapport à celui de la deuxième borne (2), de façon à ne pas perturber le réseau par un signal parasite.
- Electrificateur selon la revendication 1, caractérisé en ce que le circuit de déclenchement (23) du thyristor (9) comporte un transistor (28) dont le collecteur est relié à la gâchette du thyristor (9), dont l'émetteur est relié au point milieu d'un circuit à résistance (13) et capacité (14), et dont la base est reliée à ladite entrée (27), et en ce que ledit transistor (28) est rendu conducteur lorsque la première borne (1) est au voisinage de son potentiel le plus négatif par rapport à celui de la deuxième borne (2).
- Electrificateur selon la revendication 2, caractérisé en ce que la gâchette du thyristor (9) est reliée au collecteur du transistor (28) par l'intermédiaire d'un diac (11) et d'une résistance (12).
- Electrificateur selon la revendication 2, caractérisé en ce que la base du transistor (28) est reliée à ladite entrée (27) du circuit de déclenchement (23) par l'intermédiaire d'une résistance (29) d'une diode Zener (30) et d'une diode (31).
- Electrificateur selon la revendication 2, caractérisé en ce que le circuit à résistance (13) et capacité (14) est monté entre la première borne (1) et la deuxième borne (2).
- Electrificateur selon la revendication 5, caractérisé en ce qu'entre la première borne (1) et la résistance (13) est prévue une diode (32) pour assurer la charge de la capacité (14) pendant les alternances positives de l'alimentation.
- Electrificateur selon la revendication 2, caractérisé en ce que le circuit à résistance (13) et capacité (14) est monté entre le primaire du transformateur (10) et la deuxième borne (2).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9503798A FR2732543B1 (fr) | 1995-03-31 | 1995-03-31 | Electrificateur de cloture |
FR9503798 | 1995-03-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0735804A1 EP0735804A1 (fr) | 1996-10-02 |
EP0735804B1 true EP0735804B1 (fr) | 1998-04-15 |
Family
ID=9477610
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96400374A Expired - Lifetime EP0735804B1 (fr) | 1995-03-31 | 1996-02-23 | Electrificateur de clÔture |
Country Status (7)
Country | Link |
---|---|
US (1) | US5742469A (fr) |
EP (1) | EP0735804B1 (fr) |
AT (1) | ATE165205T1 (fr) |
AU (1) | AU692352B2 (fr) |
DE (1) | DE69600236T2 (fr) |
FR (1) | FR2732543B1 (fr) |
NZ (1) | NZ286080A (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NZ272112A (en) * | 1995-05-12 | 1997-10-24 | Stafix Electric Fencing Ltd | Electric fence pulse generator: pulse height maintained while duration varied according to fence load |
DE19909837A1 (de) * | 1999-03-05 | 2000-09-07 | Ako Agrartech Gmbh & Co Kg | Vorrichtung zur Spannungsversorgung eines Elektrozauns |
CA2906713A1 (fr) | 2013-03-15 | 2014-09-18 | Electric Guard Dog, Llc | Systemes et procedes de fourniture de diagnostics de cloture electrique ameliores |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2087146A5 (fr) * | 1970-05-06 | 1971-12-31 | Creb | |
US4114185A (en) * | 1975-04-14 | 1978-09-12 | Gallagher Electronics Limited | Electric fence controllers |
GB2004426B (en) * | 1977-09-13 | 1982-06-16 | Gallagher Electronics Ltd | Electric fence energisers |
FR2553972B1 (fr) * | 1983-10-28 | 1986-07-11 | Hamm Jean Jacques | Dispositif ameliorant la securite des clotures electriques |
DE3437953A1 (de) * | 1984-10-17 | 1986-04-24 | AKO-Werke GmbH & Co KG, 7988 Wangen | Schaltungsanordnung zur erzeugung von impulsen fuer ein weidezaungeraet |
-
1995
- 1995-03-31 FR FR9503798A patent/FR2732543B1/fr not_active Expired - Fee Related
-
1996
- 1996-02-23 AT AT96400374T patent/ATE165205T1/de not_active IP Right Cessation
- 1996-02-23 EP EP96400374A patent/EP0735804B1/fr not_active Expired - Lifetime
- 1996-02-23 DE DE69600236T patent/DE69600236T2/de not_active Expired - Fee Related
- 1996-02-27 AU AU45779/96A patent/AU692352B2/en not_active Ceased
- 1996-02-27 NZ NZ286080A patent/NZ286080A/en unknown
- 1996-03-26 US US08/621,968 patent/US5742469A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
NZ286080A (en) | 1997-07-27 |
AU692352B2 (en) | 1998-06-04 |
AU4577996A (en) | 1996-10-10 |
FR2732543A1 (fr) | 1996-10-04 |
DE69600236T2 (de) | 1998-08-27 |
DE69600236D1 (de) | 1998-05-20 |
EP0735804A1 (fr) | 1996-10-02 |
US5742469A (en) | 1998-04-21 |
FR2732543B1 (fr) | 1997-06-27 |
ATE165205T1 (de) | 1998-05-15 |
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