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LAMP_SURGE_SUPPRESSOR

2016-08-02 15:16  
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LAMP_SURGE_SUPPRESSOR
Circuit limits turn-on current through cold filament, which is major cause of lamp failure but provides normal current when filament reaches operating temperature. Developed primarily for use with lamps in locations where replacement is extremely difficult. Values shown a re primarily for low-voltage pilot lamps such as No. 44 and No.47 but can be applied to any lamp within voltage and current ratings of transistors used,-J. A.Sandier, 11 Projects under $11, Modern Electronics, June 1978, p 54-58.