METAL-AND-HALOGEN LAMP Russian patent published in 1996 - IPC

FIELD: manufacture of metal-and-halogen lamps. SUBSTANCE: metal-and-halogen lamp includes discharge tube with two key and at least one igniting electrodes electrically connected to opposite key electrode through resistor and element disconnecting igniting electrode after ignition of discharge tube connected in series. Glow discharge device is used as disconnecting element and relation U₁<U₂, U₃>U₄ is realized , where U₁ is voltage of glow discharge in glow discharge device and discharge gap between key and ignition electrodes connected in series; U₂ is voltage of no-load run of start and control equipment or amplitude of igniting pulse used to ignite lamp; U₃ is voltage of ignition of glow discharge in glow discharge device; U₄ is operational voltage across lamp. Glow discharge device placed into circuit of starting electrode is source of ultraviolet radiation. EFFECT: enhanced operational efficiency and reliability. 2 cl, 2 dwg