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Hi Paul
4 globes at 25W will be the equivalent of a 100W light bulb in terms of heat output - very hot in the confined space of a light box and probably too bright for flat fields?
Unless the globes are cool globes?
I presume if you reduce the voltage in the circuit, the bulbs will illuminate proportionally less brighter that full on, although I’m not sure how the reduced intensity may vary from bulb to bulb? Hopefully the manufacturing process is stable enough to minimize variations?
Cheers
Dennis
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