Course Edit

This page is for the course ELEC3106 - Electronics and is based on the lectures of Torsten Lehman

Overview Edit

Prerequisites Edit

A basic understanding of circuit theory and heat flow is assumed throught this page. These topics are covered in ELEC1111, ELEC2134 and PHYS1231

Thermal Management Edit

Purpose Edit

Electrical Model of Heat Transfer Edit

A simple application of an analogue to Ohm's law can be employed on a heat sink attached to a transistor. This is given by

$ T_j=P_D\cdot R_{\theta}+T_A $

where $ T_j $ is the maximum transistor junction temperature in units of degrees Celsius; $ P_D $ is the power dissipated in units of watts; $ R_{\theta} $ is the thermal resistance of the heat sink in units of degrees Celsius per watt; and $ T_A $ is the ambient temperature in units of degrees Celsius.

Practical Aspects of Mounting Heat Sinks Edit

Safe Operating Areas (SOA) Edit

Further Reading Edit

It is recommended that the reader visits and reads the lecturers scribbles as an alternative source.

See Also Edit