what is the difference between SMPS and heat sink
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The main difference between the linear power supply and SMPS is that linear power supply converts the high voltage of AC into low voltage AC first then the rectification procedure takes place. On the contrary, the SMPS converts the AC signal into DC signal first then the stepping down of voltage signal takes place.
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Linear power supply use voltage regulator for voltage regulation of the output voltage while SMPS uses feedback circuit for voltage regulation. ... The Linear power supply also dissipates power and thus requires a heat sink, but SMPS do not require heat sink as there is no power dissipation.
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