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Old 10-23-2017, 06:19 PM
madlabs madlabs is offline
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Tom, you got that backwards - Two equal resistors in parallel halves the resistance and doubles the wattage. Two equal resistors in series adds the resistance and the wattage remains the same.

So Jon, no problem with the two resistors in parallel. I would make sure there is a little air gap between them for heat dissipation

Last edited by madlabs; 10-23-2017 at 06:26 PM.
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Old 10-23-2017, 07:59 PM
old_coot88 old_coot88 is offline
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Quote:
Originally Posted by madlabs View Post
Two equal resistors in series adds the resistance and the wattage remains the same.
The wattage rating for the pair would double, wouldn't it? For example, with two equal-value half-watters in series, the wattage rating for the pair would be 1 watt, seems like (since the working voltage across each will be halved).

Whereas a pair of half-watters in parallel also has a 1 watt rating because the current through each is halved.
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