8/31/2023 0 Comments Uc3843 24v 3aThe UC3843 is a fixed frequency-mode PWM controller, it is specially designed for Off-Line and DC to DC converter applications with minimum external components. UC3843 Based Power Supply Design Specification This tutorial will take you through the complete circuit and will also explain how to build your transformer for the UC3843 circuit. In this project, we will build another 12V 2.2A SMPS circuit using the UC3843 Current Mode PWM Controller IC, which is a popular low-cost SMPS driver IC. We even did a project on how to build our own SMPS transformer that could be used in our SMPS designs along with the driver IC. We have already built a few SMPS circuits earlier like 5V 2A SMPS circuit and 12V 1A TNY268 SMPS circuit. This type of AC-DC converter takes in the 230V/110V AC mains voltage as input and converts it to low-level DC voltage with the help of the switching process, hence the name switch mode power supply. Switched-mode power supply circuits (SMPS) are most often required in many electronic designs to convert the AC mains voltage to a suitable level of DC voltage for the device to operate. ![]() ![]() Switching Mode Power Supply or simply SMPS is a type of Power Supply Unit (PSU) that uses a switching device (such as transistor or MOSFET) to convert the source that can be AC or DC to a constant DC voltage.
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