4. Electric lamp and discharge devices: systems
  5. Periodic switch in the supply circuit
  6. Periodic switch cut-out
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Detection and protection circuit for fluorescent lamps operating

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out
Patent

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Device for accurately detecting end of usage lifetime of a disch

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out
Patent

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Device for protecting a ballast circuit from excess voltage

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out
Patent

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Dimmer having a power supply monitoring circuit

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out
Reissue Patent

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Dimmer having a power supply monitoring circuit

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out
Reexamination Certificate

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Discharge lamp circuit which limits ignition voltage across a se

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out
Patent

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