Why does the voltage in the feedback circuit not change?
We know that the feedback circuit plays an important role in the switching power supplies. There are usually two types of feedback: voltage feedback and current feedback.
The operation speed of voltage feedback is lower than that of current feedback. For this reason, most switching power supplies use current feedback. They do this with the help of shunt resistance.
In this video, we will check the functioning of the voltage feedback circuit momentarily to find out what changes are made in the output of the circuit and the feedback circuit by changing the feedback voltage.
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00:00 Introduction of voltage feedback circuit in switching power supplies
00:55 Schematic of 12V 33A switching power supply
02:13 Video Sponsor – website pcbway.com
02:40 Measuring feedback voltage in practice