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Hitachi Ltd
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Hitachi Ltd
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Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP1709576ApriorityCriticalpatent/JPS52100771A/en
Publication of JPS52100771ApublicationCriticalpatent/JPS52100771A/en
PURPOSE:To limit the number of production of high kick voltage due to separation of contacts of both electrodes of a starter lamp glow switch to minimum required for firing a lamp with a structure that an easily electron emissive substance is not coated on the contacts of both the electordes of the glow switch.