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16. START PULSE GENERATOR (SPG) R763512
16.1 General Info
View of the SPG
Image 16-1
View of the SPG
Purpose of the SPG
The purpose of the Start Pulse Generator (SPG) is to ignite the lamp with a burst of high voltage peaks. The SPG superimposes
high voltage peaks onto the normal dc start-up voltage of the lamp supplied by the Lamp Power Supply. Once the lamp is started
up and burning the high voltage is removed and the lamp voltage drops to the arc voltage.
The high voltage peaks are added to the lamp voltage by a superimposing transformer which is in series with the positive connection
from the LPS to the lamp. The negative connection from LPS to lamp is direct and is connected to the chassis at the lamp side. The
full lamp current passes through the secondary of the superimposing transformer.
R5976820 SLM R12+ PERFORMER 08/03/2005
Start Pulse Generator Driver R7632245S
16. Start Pulse Generator (SPG) R763512
Start Pulse Generator Complete R763512
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