High pressure electric discharge lamp employing a metal spiral w
High pressure metal halide lamp with electron collector
High pressure metal vapor discharge lamp
High pressure metal vapor discharge lamp
High pressure metal vapor discharge lamp
High pressure metal vapor discharge lamp
High pressure metal vapor discharge lamp
High pressure series arc discharge lamp construction with simpli
High pressure sodium lamp starting aid
High pressure sodium lamp with bimetallic starting aid and ignit
High pressure sodium vapor discharge lamp
High pressure sodium vapor lamp having resistance heater means
High pressure sodium vapor lamp having resistance heater means
High pressure sodium vapor lamp having resistance heater means
High pressure sodium vapor lamp with voltage rise compensator
High pressure vapor discharge lamp with a built-in igniter
High PRF high current switch
High reliability incandescent portable illumination system
High RF isolation crossed-field amplifier
High voltage generating device