Light bulb switching circuit

Circuit Protection of Light Bulb Switching Circuit

Solutions:

Protection Application:: The light bulb switching circuit controls the action of high-intensity bulb that provides light for the projector. Energy stored in the capacitor (C2) flows through the step-up transformer and ignites the bulb after the GDT fires (breaks over).
Solution Description:: As shown at the left, a switching GDT should be used as the switching device for the circuit. It is selected based upon the breakover level that is required by the storage capacitor and step-up transformer.
Companion Solutions:: The AC mains that supply power to this circuit should also be considered for circuit protection needs (fuse, MOV).
Regulatory Issues:: Does not apply.
Unique Features:: Does not apply.
Application Warnings:: Does not apply.