No voltage input, why?
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New member Username: RoseljrPost Number: 1 Registered: Oct-21 | Use UC3843 to make DC5V/2.4A switching power supply, but there is no voltage output, please help I am a novice, and I recently learned about switching power supply. I used UC3843 to make DC5V/2.4A switching power supply, but there is no voltage output. Please help me point out the mistake. Physical test result: UC3843's 7th pin voltage: 9.1V The 8th pin voltage 2.0V The second pin voltage: 1.2V, output voltage: 0V  https://www.utmel.com/components/uc3843-pwm-controller-pinout-datasheet-and-uses?id=388 |
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