jagspaul
Junior Member level 2
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I have made one 12 volt 2 amp smps using uc3844 pwm controller with MOSFET switching frequency 100 Khz. When I measure the output with digital and analog multimeter the output is stable for both meters. But when I connected the output to oscilloscope (2volt/dev and 2us/dev) high ripple voltage is showing on the CRT screen.
Please find the CRT image file attach here with.
Somebody please come forward to solve this problem and explain why this ripple has come. (I have used TL431 in control loop.)
regards
jagspaul
Please find the CRT image file attach here with.
Somebody please come forward to solve this problem and explain why this ripple has come. (I have used TL431 in control loop.)
regards
jagspaul