12 September 2001 Cool design When it comes to cooling, every application has its own requirement. So how do you specify a fan to cool a power supply? By Andy Bryars and Ian Macleod. A power supply is the very heart – the engine – of a circuit or system. Without it, other parts of the circuit will not function properly or, generally, not at all. It is therefore essential that the power supply operates reliably. A major factor in reducing power supply (psu) failure is to ensure that it runs well within its upper temperature limit for safe operation. For some applications, natural convection is sufficient to take heat away from the psu. However, for most applications, the use of an efficient, quiet fan is the best way to maintain a safe working temperature within the power supply. Click here to request this article by email Author Graham Pitcher Comment on this article This material is protected by MA Business copyright See Terms and Conditions. One-off usage is permitted but bulk copying is not. For multiple copies contact the sales team. What you think about this article: Add your comments Name Email Comments Your comments/feedback may be edited prior to publishing. Not all entries will be published. Please view our Terms and Conditions before leaving a comment.