Re: Lamps for lamp limiters
Traffic signal bulbs used to be 260v, 65w ES. So when used on normal 240v they would be under run and last a long time. (I rarely saw one not working).
I actually found one once in some long grass round a traffic light pole after I had stopped my bike for a red light. I liberated it and took it home where it lasted years and years in my hall. It must have been a vacuum light as the glass gradually blackened with use.
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