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Robertson SP2 ballast
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My latest find from an old late 70s cooking range. It may be a replacement since non-Frost/CLF fluorescent ballasts are rather uncommon inside appliances. I didn't find any particular form of date coding on the ballast, so if it's not original it could be a 1990s replacement.
Not tested but ohmeter reads 24 ohms, it's a little low but it sounds OK.
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