Invention Grant
- Patent Title: Multiple strike ballast with lamp protection for electrodeless lamp
- Patent Title (中): 多重镇流器,带无极灯灯管保护
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Application No.: US14064837Application Date: 2013-10-28
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Publication No.: US09301375B2Publication Date: 2016-03-29
- Inventor: Nitin Kumar , Markus Ziegler , Shashank Bakre , Ayan Choudhury
- Applicant: OSRAM SYLVANIA Inc.
- Applicant Address: US MA Wilmington
- Assignee: OSRAM SYLVANIA INC.
- Current Assignee: OSRAM SYLVANIA INC.
- Current Assignee Address: US MA Wilmington
- Agent Shauna P. Montana
- Main IPC: H05B37/02
- IPC: H05B37/02 ; H05B41/16 ; H05B41/28 ; H01J65/04

Abstract:
A multi-strike ballast to ignite an electrodeless lamp is disclosed, and includes an inverter circuit, a protection circuit, and a controller. The inverter circuit, upon activation, sends an ignition pulse to the lamp. The inverter circuit shuts down upon receiving a deactivation signal, and activates upon receiving an activation signal, triggering another ignition pulse. The protection circuit senses a change in a voltage associated with the lamp. The sensed changed may indicate that the lamp has not yet ignited or that the lamp is broken. The controller receives the sensed change in voltage and, in response, sends a deactivation signal to the inverter circuit. The controller waits a predetermined time and then sends an activation signal to the inverter circuit. The controller repeats until a change in voltage associated with the lamp is not sensed, or until a predefined number of repeats occur, providing multiple ignition pulses to the lamp.
Public/Granted literature
- US20140049159A1 MULTIPLE STRIKE BALLAST WITH LAMP PROTECTION FOR ELECTRODELESS LAMP Public/Granted day:2014-02-20
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