{824} SMPS Output Is High, Fluctuating and Noise
27.6 هزار بار بازدید -
2 سال پیش
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in this video {824} SMPS
in this video {824} SMPS Output Is High, Fluctuating and Noise. i demonstrated how to repair a switch mode power supply SMPS model number, S-500-12 it is 12v 40 ampere 500 watt industrial power supply,
problem in this power supply that,
1. output voltage were high than the rated voltage. it was providing above 17 volts instead of 12v.
2. output voltage were fluctuating from 17 volt to 20 volt
3. output unregulated and uncontrolled
4. smps was providing tick tick and humming and whistling sound
i found that in this KA7500 / TL494 based half bridge topology power supply, the signal amplifier transistors for isolating pulse transformer damaged. these we 2SC2655 transistors and i replaced with 2N4923 medium power transistors
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00:00 how to repair 12V 40A 500watt SMPS
00:16 smps output fluctuating with high unregulated voltage
01:04 smps tick tick humming noise / sound
01:38 smps output is unregulated and uncontrolled
2 سال پیش
در تاریخ 1401/11/28 منتشر شده
است.
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