Ohm resistive load e.g. halogen lamp, energizing circuit, has voltage ripple determining device determining ripple at divider and generating signal from ripple, where signal denotes electrical power that is transferred to load
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Adapter for fluorescent lamp with cold start has control circuit for inverter with integrated circuit with control input to timing capacitor that receives charging current and whose voltage controls lamp preheating, ignition and burn modes
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Ballast for e.g. gas-discharge lamp, has capacitor and resistor forming dim arrangement that reduces lamp current supplied to lamp by receiving failure signal, which indicates failure of supply voltage
DE102004007451A1
An emergency electrical supply for fluorescent lighting from a DC source has a switching arrangement including detection means for the supply waveform
DE10357537A1
Circuit for generating an auxiliary voltage such as for use in a pre-switch for high pressure discharge lamps with a regulator connecting a control input with a bootstrap capacitor
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Screwless fastening device
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Control circuit with data backup and data backup method
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Interface circuit for remote-control input has overvoltage detector controlling switch between signal line(s) and communication circuit
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Dimmer adapter device for gas discharge lamps, especially fluorescent lamps, has heating branch connected to a.c. source to supply electrode heating, voltage limiter in heating branch
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Control device for a lighting device
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Power supply for light emitting diodes for room lighting
