GB662473A - Improvements in and relating to condenser-charging regulators for electric circuits of photoflash equipment - Google Patents

Improvements in and relating to condenser-charging regulators for electric circuits of photoflash equipment

Info

Publication number
GB662473A
GB662473A GB1187249A GB1187249A GB662473A GB 662473 A GB662473 A GB 662473A GB 1187249 A GB1187249 A GB 1187249A GB 1187249 A GB1187249 A GB 1187249A GB 662473 A GB662473 A GB 662473A
Authority
GB
United Kingdom
Prior art keywords
condenser
voltage
relay
charging
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
Application number
GB1187249A
Inventor
Peter Stanley Britton
Roger Frederic Laurence
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.)
LAURENCE IND INSTR AND CONTROL
Original Assignee
LAURENCE IND INSTR AND CONTROL
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 LAURENCE IND INSTR AND CONTROL filed Critical LAURENCE IND INSTR AND CONTROL
Priority to GB1187249A priority Critical patent/GB662473A/en
Publication of GB662473A publication Critical patent/GB662473A/en
Expired legal-status Critical Current

Links

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
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/30—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp
    • H05B41/32—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp for single flash operation

Landscapes

  • Stroboscope Apparatuses (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)

Abstract

662,473. Systems of charging condensers. LAURENCE INDUSTRIAL INSTRUMENT & CONTROL CO., Ltd. Jan. 13, 1950 [May 4 1949], No. 11872/49. Class 38 (iv). The voltage to which a condenser 5 for operating a photo flashlamp is charged is rendered independent of voltage variations of the charging source by a relay A which is controlled by a circuit responsive to the condenser voltage and which disconnects the condenser from the charging source upon the attainment of a predetermined voltage. The relay may be of the electrostatic or electromagnet type and, in the latter case, preferably has its iron circuit formed of low remanence material, such as Swedish iron. As shown in Fig. 1, a potential divider 1, 2 applies to an auxiliary condenser 6 and a discharge tube 7, 8, a voltage proportional to that across the main condenser 5 and when this has attained the predetermined value the tube strikes and discharges the auxiliary condenser through the relay which picks up, locks in over contacts a1 and opens the charging circuit of the main condenser at contacts a2. Due to current taken by the potential divider and relay, the voltage across condenser 5 starts to fall, so that the relay eventually drops out, closing contacts a2 to initiate re-charging of the condenser. In a modified circuit, the relay drops out under time control instead of voltage control. A further arrangement uses a moving- coil relay as the voltage-sensitive means.
GB1187249A 1949-05-04 1949-05-04 Improvements in and relating to condenser-charging regulators for electric circuits of photoflash equipment Expired GB662473A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1187249A GB662473A (en) 1949-05-04 1949-05-04 Improvements in and relating to condenser-charging regulators for electric circuits of photoflash equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1187249A GB662473A (en) 1949-05-04 1949-05-04 Improvements in and relating to condenser-charging regulators for electric circuits of photoflash equipment

Publications (1)

Publication Number Publication Date
GB662473A true GB662473A (en) 1951-12-05

Family

ID=9994207

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1187249A Expired GB662473A (en) 1949-05-04 1949-05-04 Improvements in and relating to condenser-charging regulators for electric circuits of photoflash equipment

Country Status (1)

Country Link
GB (1) GB662473A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1059111B (en) * 1957-12-12 1959-06-11 Metz Transformatoren & App Electronic flash unit with glow lamp display for the state of charge of the storage capacitor
DE1060046B (en) * 1958-02-21 1959-06-25 Multiblitz Geraete Dr Ing D A Tube flash unit with a storage capacitor and a relay-controlled auxiliary circuit
DE1089480B (en) * 1956-04-09 1960-09-22 Siemens Edison Swan Ltd Circuit arrangement for electronic flash discharge lamps
DE1161642B (en) * 1961-02-27 1964-01-23 Frako Kondensatoren Und Appbau Circuit arrangement for charging a storage capacitor, in particular an electrolytic capacitor
DE1168563B (en) * 1963-03-30 1964-04-23 Leitz Ernst Gmbh Electronic flash unit with adjustable flash energy

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1089480B (en) * 1956-04-09 1960-09-22 Siemens Edison Swan Ltd Circuit arrangement for electronic flash discharge lamps
DE1059111B (en) * 1957-12-12 1959-06-11 Metz Transformatoren & App Electronic flash unit with glow lamp display for the state of charge of the storage capacitor
DE1060046B (en) * 1958-02-21 1959-06-25 Multiblitz Geraete Dr Ing D A Tube flash unit with a storage capacitor and a relay-controlled auxiliary circuit
DE1161642B (en) * 1961-02-27 1964-01-23 Frako Kondensatoren Und Appbau Circuit arrangement for charging a storage capacitor, in particular an electrolytic capacitor
DE1168563B (en) * 1963-03-30 1964-04-23 Leitz Ernst Gmbh Electronic flash unit with adjustable flash energy

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