Forum Discussion
wopachop
Jun 18, 2018Explorer
(email from Noctua regarding fans in an RV getting over 12v. i trust landYacht's real world experience over what a rep can say. its nice they replied noctua got my money i bought a 140mm 3000k and 40mm for the fridge)
Dear Tony,
thank you for your interest in our products.
The general rule for 12V fans is +10%, which means 13.2V is the maximum allowed voltage.
PWM does not influence the height of the input voltage, thus it won't make a difference.
In practice 13.5V won't make the fan burn so I guess it should be ok but it is on your own risk.
If you want to be sure that you are within spec you can use a resistor on the input line.
Kind regards,
Andreas Karner
Noctua support team
Dear Tony,
thank you for your interest in our products.
The general rule for 12V fans is +10%, which means 13.2V is the maximum allowed voltage.
PWM does not influence the height of the input voltage, thus it won't make a difference.
In practice 13.5V won't make the fan burn so I guess it should be ok but it is on your own risk.
If you want to be sure that you are within spec you can use a resistor on the input line.
Kind regards,
Andreas Karner
Noctua support team
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