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All colleagues unite and focus their efforts to write a new chapter of developmentThe differences between switch-mode power supplies and linear power supplies in terms of terminal connections!
所属分类： Industry News
发布时间：2020-05-19
In switch-mode power supplies, the regulating transistor operates in saturation and cutoff, resulting in low heat dissipation, high efficiency (exceeding 75%), and the elimination of bulky transformers. However, the DC output of a switch-mode power supply typically contains significant ripple—around 50 mV at a 5 V output under typical conditions—which can be mitigated by paralleling a Zener diode at the output. Additionally, the switching action generates substantial high‑frequency spike interference, necessitating the insertion of ferrite beads in the circuit to suppress such noise. By contrast, linear power supplies do not suffer from these drawbacks, and their output ripple can be kept very low—below 5 mV. For switch-mode power supplies, the most commonly used terminal blocks are barrier-type terminals, such as models 9500, 825, and 611.
