| 摘要 |
A circuit for starting, operating and instant hot restarting of high intensity gaseous discharge lamps utilizes a conventional ballast, an ignition transformer and a pulse transformer. The ignition transformer is connected across the ballast output and is in circuit with a storage capacitor and a spark gap device which, in combination, provide high frequency, high voltage pulses to a pulse transformer which is in circuit with the high intensity gasesous discharge lamp. There are means to limit the duration during which the high frequency, high voltage pulses are applied to ignite the lamp and there is a current sensitive timing circuit breaker to protect the lamp and ignition circuit.
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