Halogen incandescent lamp
High pressure light emitting electric discharge device
High pressure sodium lamp containing barium getter
High pressure, mercury vapor, metal halide discharge lamp
High voltage electric switch with trigger electrodes integral wi
High voltage two stage triggered vacuum gap
High-pressure gas discharge lamp and electron emissive electrode
High-pressure sodium vapor discharge lamp
High-pressure sodium vapor discharge lamp
High-pressure sodium-vapor discharge lamp
Hollow anode optical radiation source
Hollow cathode