FR2402966A2 - Fluorescent lamp power supply inverter - has two transistors and additional source providing base current necessary for their correct saturation (NL 24.10.78) - Google Patents

Fluorescent lamp power supply inverter - has two transistors and additional source providing base current necessary for their correct saturation (NL 24.10.78)

Info

Publication number
FR2402966A2
FR2402966A2 FR7727492A FR7727492A FR2402966A2 FR 2402966 A2 FR2402966 A2 FR 2402966A2 FR 7727492 A FR7727492 A FR 7727492A FR 7727492 A FR7727492 A FR 7727492A FR 2402966 A2 FR2402966 A2 FR 2402966A2
Authority
FR
France
Prior art keywords
transistors
power supply
fluorescent lamp
base current
current necessary
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.)
Pending
Application number
FR7727492A
Other languages
French (fr)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7727492A priority Critical patent/FR2402966A2/en
Priority to ES468944A priority patent/ES468944A1/en
Priority to JP4717378A priority patent/JPS549727A/en
Priority to BR7802452A priority patent/BR7802452A/en
Priority to NL7804245A priority patent/NL7804245A/en
Priority to IT22504/78A priority patent/IT1094713B/en
Priority to DE19782817319 priority patent/DE2817319A1/en
Publication of FR2402966A2 publication Critical patent/FR2402966A2/en
Pending 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
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/282—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
    • H05B41/2821—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices by means of a single-switch converter or a parallel push-pull converter in the final stage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5383—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a self-oscillating arrangement

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

The inverter has two transistors which have earthed emitters. Their collectors are connected with each other through a capacitor, and through windings to a centre point at the supply DC voltage. Their bases are connected with each other by an inductance coupled with collector winding and forming a base voltage generator. The inverter has an additional current supply for the bases of both transistors. This current supply is used to feed through two suitable resistors a current necessary for correct saturation of the transistors.
FR7727492A 1977-04-21 1977-09-12 Fluorescent lamp power supply inverter - has two transistors and additional source providing base current necessary for their correct saturation (NL 24.10.78) Pending FR2402966A2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
FR7727492A FR2402966A2 (en) 1977-09-12 1977-09-12 Fluorescent lamp power supply inverter - has two transistors and additional source providing base current necessary for their correct saturation (NL 24.10.78)
ES468944A ES468944A1 (en) 1977-04-21 1978-04-19 Static converter
JP4717378A JPS549727A (en) 1977-04-21 1978-04-20 Static converter
BR7802452A BR7802452A (en) 1977-04-21 1978-04-20 CONTINUOUS-ALTERNATE STATIC CONVERTER
NL7804245A NL7804245A (en) 1977-04-21 1978-04-20 STATIC CONVERTER.
IT22504/78A IT1094713B (en) 1977-04-21 1978-04-20 PERFECTED STATIC CONVERTER
DE19782817319 DE2817319A1 (en) 1977-04-21 1978-04-20 Fluorescent lamp power supply inverter - has two transistors and additional source providing base current necessary for their correct saturation (NL 24.10.78)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7727492A FR2402966A2 (en) 1977-09-12 1977-09-12 Fluorescent lamp power supply inverter - has two transistors and additional source providing base current necessary for their correct saturation (NL 24.10.78)

Publications (1)

Publication Number Publication Date
FR2402966A2 true FR2402966A2 (en) 1979-04-06

Family

ID=9195270

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7727492A Pending FR2402966A2 (en) 1977-04-21 1977-09-12 Fluorescent lamp power supply inverter - has two transistors and additional source providing base current necessary for their correct saturation (NL 24.10.78)

Country Status (1)

Country Link
FR (1) FR2402966A2 (en)

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