EP0224227B1 - Commande de découpage de phase pour mettre en oeuvre une charge ohmique branchée sur un réseau alternatif - Google Patents

Commande de découpage de phase pour mettre en oeuvre une charge ohmique branchée sur un réseau alternatif Download PDF

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Publication number
EP0224227B1
EP0224227B1 EP86116222A EP86116222A EP0224227B1 EP 0224227 B1 EP0224227 B1 EP 0224227B1 EP 86116222 A EP86116222 A EP 86116222A EP 86116222 A EP86116222 A EP 86116222A EP 0224227 B1 EP0224227 B1 EP 0224227B1
Authority
EP
European Patent Office
Prior art keywords
series
phase
chopping control
capacitor
voltage
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
EP86116222A
Other languages
German (de)
English (en)
Other versions
EP0224227A2 (fr
EP0224227A3 (en
Inventor
Joachim Arlt
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of EP0224227A2 publication Critical patent/EP0224227A2/fr
Publication of EP0224227A3 publication Critical patent/EP0224227A3/de
Application granted granted Critical
Publication of EP0224227B1 publication Critical patent/EP0224227B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
    • H05B39/04—Controlling
    • H05B39/08—Controlling by shifting phase of trigger voltage applied to gas-filled controlling tubes also in controlled semiconductor devices
    • H05B39/083—Controlling by shifting phase of trigger voltage applied to gas-filled controlling tubes also in controlled semiconductor devices by the variation-rate of light intensity

Definitions

  • the invention is based on a phase gating control for operating an ohmic load on AC line voltage, consisting of a triac connected in series with the ohmic load, an RC element parallel to the triac with a capacitor and a resistance block, the resistance block consisting of at least two lying in series Resistors is formed, and a diac, which is connected on the one hand to the connection point between the capacitor and the resistor block, and on the other hand to the grid of the triac.
  • a phase gating control is known from DE-A-2 611 553, in which the relative fluctuations in the effective voltage applied to the ohmic consumer do not at least exceed the relative fluctuations in the mains voltage. This is essentially achieved by additional components which are connected in parallel to the RC element and have the same voltage behavior as the RC element.
  • Another arrangement is known from US-A-4 535 025 in which an additional control circuit is connected in series to the RC element.
  • timing element formed from the capacitor and the resistor of the RC element adjacent to it is connected in parallel with a compensation element which has a voltage behavior opposite to that of the capacitor of the timing element, whereby the compensation element is connected directly to the AC mains voltage via a series-connected circuit for determining the impedance.
  • This circuit is characterized by a low heat loss. The fluctuations in the ignition timing are corrected very precisely by a relatively uncomplicated, inexpensive and space-saving measure.
  • the diac is a relatively simple component which is distinguished by a negative voltage behavior which is opposite to the capacitor of the timing element.
  • the compensation element In order for the compensation element to function reliably, it is necessary to connect two diacs in series, which ensures that the voltage built up on the capacitor of the timing element reaches the breakdown voltage of the diacs used to trigger the triacs.
  • the circuit for determining the impedance advantageously consists of the series connection of a series resistor and two Zener diodes which are poled in opposite directions to one another, since the required low-impedance impedance alone cannot be achieved with a series resistor.
  • the circuit arrangement according to the invention is particularly suitable for incandescent lamps, where a constant effective output voltage is sought when a constant light intensity and a constant color temperature are of interest.
  • the components of the circuit according to the invention enable, in particular, use in the control of incandescent lamps which are originally designed for voltages lower than the available mains voltage with a usual tolerance range of ⁇ 10%.
  • a conventional phase control is shown in FIG. 1; circuit parts which are insignificant to the functional principle, such as interference suppression filters or overvoltage protection filters, have been omitted.
  • a triac Tr is connected in series to an ohmic consumer Ro, the ignition timing of which is determined by an RC element lying parallel to it and the switching behavior of which is determined by a trigger diac DT together with the capacitor of the RC element.
  • the capacitor C is charged via the resistor block R, formed from the two series resistors R 1 (controllable) and R2, with the time constant RC in each half-wave of the AC mains voltage present. If the charging voltage reaches the breakover voltage of the Diacs DT, the Diac DT switches through suddenly. As a result, a control current flows to the gate of the triac Tr, whereupon the triac Tr also switches through, so that voltage is present at the ohmic consumer Ro, here an incandescent lamp, until the end of the half-wave.
  • a 120 V / 300 W halogen incandescent lamp was operated at 220 V.
  • the RC element is composed of the capacitor C and the resistor block R, formed from the resistors R 1 (consisting of two partial resistors, one of which is adjustable) and R2.
  • the diac DT triggers the triac Tr according to the same principle as already described in FIG. 1.
  • the resistor R3 only serves to limit the ignition current.
  • the effective output voltage is stabilized via a compensation element K, which consists of two triacs D 1, D2, which are connected in parallel with the capacitor C via R1. This simple circuit arrangement can be made very compact and can therefore be integrated directly into the lamp.
  • the effect of the compensation element is based on the known negative voltage behavior of a diac, compared to the charging process of the timing element R1C that can be characterized as a positive voltage behavior.
  • a defined change in current via D1, D2 is required to compensate for changes in the mains voltage.
  • the control loop impedance determined from this is realized by the series connection of the compensation element K with a circuit Z which consists of a series resistor R4 corresponding to the impedance and two oppositely polarized Zener diodes Z1, Z2.
  • the magnitude of the Zener voltage is determined by the requirement that the necessary current for the center of the control range should flow via the nominal voltage and the nominal output power via K and Z.
  • the circuit arrangement according to FIG. 2 results in excellent stabilization of the luminous flux of the 120 V / 300 W halogen incandescent lamp, as shown in Table 2.
  • the components listed in Table 3 were used for the leading edge control. With a fluctuation in the mains voltage of ⁇ 10%, the fluctuation in the luminous flux is now significantly less than 1%.

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)

Claims (5)

1. Dispositif de commande à découpage de phase utilisé pour faire fonctionner un appareil d'utilisation ohmique raccordé à la tension alternative du réseau, et constitué par un triac (Tr) branché en série avec l'appareil d'utilisation ohmique (Ro), un circuit RC branché en parallèle avec le triac (Tr) et comportant un condensateur (C) et un ensemble de résistances (R) - formé par au moins deux résistances (R1, R2) branchées en série - et un diac (DT), qui est raccordé d'une part au point de liaison entre le condensateur (C) et l'ensemble de résistances (R) et d'autre part à la grille du triac (Tr), caractérisé par le fait qu'en parallèle avec le circuit de temporisation, formé par le condensateur (C) et par la résistance (R1 ), voisine de ce condensateur, est branché un circuit de compensation (K), qui possède un comportement en tension opposé à celui du condensateur (C) du circuit de temporisation, le circuit de compensation K étant raccordé directement à la tension alternative du réseau par l'intermédiaire d'un circuit (Z) branché en série avec le circuit de compensation et servant à déterminer l'impédance.
2. Dispositif de commande à découpage de phase suivant la revendication 1, caractérisé par le fait que le circuit de compensation (K) est constitué par au moins deux diacs (D1, D2) branchés en série.
3. Dispositif de commande à découpage de phase suivant la revendication 1, caractérisé par le fait que le circuit (Z) servant à déterminer l'impédance est constitué par le circuit série formé d'une résistance additionnelle (R4) et de deux diodes Zener (Z1, Z2), qui sont polarisées en sens inverse l'un par rapport à l'autre.
4. Dispositif de commande à découpage de phase suivant l'une des revendications 1 à 3, caractérisé par le fait que l'appareil d'utilisation ohmique (Ro) est une lampe à incandescence.
5. Dispositif de commande à découpage de phase suivant la revendication 4, caractérisé par le fait que la lampe à incandescence est conçue à l'origine pour fonctionner avec une tension inférieure à la tension disponible du réseau.
EP86116222A 1985-11-26 1986-11-22 Commande de découpage de phase pour mettre en oeuvre une charge ohmique branchée sur un réseau alternatif Expired EP0224227B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853541771 DE3541771A1 (de) 1985-11-26 1985-11-26 Phasenanschnittsteuerung zum betrieb eines ohmschen verbrauchers an netzwechselspannung
DE3541771 1985-11-26

Publications (3)

Publication Number Publication Date
EP0224227A2 EP0224227A2 (fr) 1987-06-03
EP0224227A3 EP0224227A3 (en) 1987-10-14
EP0224227B1 true EP0224227B1 (fr) 1989-05-03

Family

ID=6286881

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86116222A Expired EP0224227B1 (fr) 1985-11-26 1986-11-22 Commande de découpage de phase pour mettre en oeuvre une charge ohmique branchée sur un réseau alternatif

Country Status (2)

Country Link
EP (1) EP0224227B1 (fr)
DE (2) DE3541771A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2322945A (en) * 1997-03-08 1998-09-09 Appliance Control Technology E A power supply for an electrical appliance control
DE10014932C1 (de) * 2000-03-20 2002-01-17 Spectrometrix Optoelectronic S Vorrichtung und Verfahren zum Pulsbetrieb von Glühwendellampen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51109452A (fr) * 1975-03-20 1976-09-28 Olympus Optical Co
US4353025A (en) * 1980-12-08 1982-10-05 Hybrinetics, Inc. Phase controlled voltage reducing circuit having line voltage compensation

Also Published As

Publication number Publication date
EP0224227A2 (fr) 1987-06-03
DE3541771A1 (de) 1987-05-27
EP0224227A3 (en) 1987-10-14
DE3663217D1 (en) 1989-06-08

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