Abstract: The instant invention relates to an ignitor turn-off switch for ballasts for high intensity discharge (HID) lamps to prevent damage to ballasts by disconnecting the ignitor if a lamp has failed or is missing. The ignitor turn-off switch circuit comprises an AC power source, a full-wave bridge rectifier circuit, a voltage regulator circuit, a first solid state integrated circuit as a timer circuit, and a second solid state integrated circuit as a switch circuit. The second solid state integrated circuit comprises an optically-coupled triac and light emitting diode wherein the optically-coupled triac is driven by a beam generated by the light emitting diode.

Abstract: The invention comprises an auxiliary lamp controller and related circuits to operate an auxiliary lamp and circuit to light auxiliary lamps at 120 VAC and 50-60 Hz current connected to an electronic HID ballast operating at a frequency of 50-60 Hz to over 400 kHz and voltages of 120-277 VAC or connected to a magnetic HID ballast operating at 120-277 VAC and 50-60 Hz, as provided by a multitap transformer and related circuitry wherein the auxiliary lamp is illuminated during HID lamp phases of being extinguished from loss of power or other reasons, and during cool-down, start-up and warm-up phases of the HID lamp, and the auxiliary lamp is extinguished upon the HID lamp reaching full illumination phase.

Abstract: A method and electronic circuit operate a quartz auxiliary lamp lighting lamp and circuit to light a quartz auxiliary lamp at 120 Vac and 50-60 Hz current connected to an electronic HID ballast operating at a frequency of 100 Hz to over 400 kHz and voltages of from 120 Vac, as provided by a multitap transformer and related circuitry.

Abstract: The instant invention relates to an HID ballast and lamp tester, which provides visual indication of failure of either the ballast or lamp by continuously monitoring the status of the HID lighting system. The HID ballast and lamp tester detects and utilizes the voltage difference between the open circuit voltage and the operating voltage of the ballast to trigger visual indication of the open circuit voltage output of the ballast when the HID lamp has failed. The tester circuit comprises the ballast source, a full wave bridge rectifier and filter capacitor circuit, a voltage divider network circuit, a trigger circuit of a diac bi-directional silicon switch and a light emitting diode.

Abstract: The invention comprises an auxiliary lamp controller and related circuits to operate an auxiliary lamp and circuit to light auxiliary lamps at 120 VAC and 50-60 Hz current connected to an electronic HID ballast operating at a frequency of 50-60 Hz to over 400 kHz and voltages of 120-277 VAC or connected to a magnetic HID ballast operating at 120-277 VAC and 50-60 Hz, as provided by a multitap transformer and related circuitry wherein the auxiliary lamp is illuminated during HID lamp phases of being extinguished from loss of power or other reasons, and during cool-down, start-up and warm-up phases of the HID lamp, and the auxiliary lamp is extinguished upon the HID lamp reaching full illumination phase.

Abstract: The instant invention relates to an ignitor turn-off switch for ballasts for high intensity discharge (HID) lamps to prevent damage to ballasts by disconnecting the ignitor if a lamp has failed or is missing. The ignitor turn-off switch circuit comprises an AC power source, a full-wave bridge rectifier circuit, a voltage regulator circuit, a first solid state integrated circuit as a timer circuit, and a second solid state integrated circuit as a switch circuit. The second solid state integrated circuit comprises an optically-coupled triac and light emitting diode wherein the optically-coupled triac is driven by a beam generated by the light emitting diode.

Abstract: The invention comprises a method and electronic circuit to operate a quartz auxiliary lamp lighting lamp and circuit to light a quartz auxiliary lamp at 120 Vac and 50-60 Hz current connected to an electronic HID ballast operating at a frequency of 100 Hz to over 400 kHz and voltages of from 120 Vac, as provided by a multitap transformer and related circuitry.