{272} SMPS Output voltage Fluctuation / Switch Mode Power Supply Output Not Regulated URDU

SMPS Output voltage Fluctuation / Switch Mode Power Supply Output Not Regulated. smps output fluctuation term is used when the output voltage of switch mode power supply are not being regulated properly. not regulated amplitude of the output in any smps is called fluctuation. i explained in urdu hindi language.
it may be due to many reasons
1. main dc capacitor is internally open circuit
2. vcc capacitor of smps ic is open internally
3. vcc circuit / bias circuit / auxiliary circuit is open circuit
4. output circuit have some short circuit capacitor
5. feedback circuit is not working properly, it may be due to reference circuit, TL431 reference, or optocoupler or its related components
#electronicscreators #smps_output #fluctuation
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in this video i demonstrated How To Repair Switch Mode Power Supply SMPS When Low OutPut Voltage & Fluctuation. it is a KA7500 / TL494 based push pull topology power supply, in this power supply that output was 5 volt instead of 12 volt. the output was unregulated and fluctuating. i found both smoothing dc capacitors open circuit. i replaced the capacitors and the supply started working normally.
i explained practical How to repair switch mode power supply SMPS very easy. i shared my easiest and perfect troubleshooting techniques practical troubleshooting. smps concept and troubleshooting repairing or understanding repair switching mode power supply basics and working principle. also i discussed smps basics. after watching this video you can capable to:-
how to #repair #smps
fuse keeps blowing
how to repair switch mode power supply when short circuit at input
if SMPS is dead or no ouput
if SMPS have fluctuating output or output voltage unregulated
if smps have short circuit in output
how to eliminate short circuit
how to troubleshoot PWM SMPS #controller when there is no switching from MOSFET
if SMPS have a whistle sound or excessive noise or excessive heat
how to repair mobile charger
how to repair computer power supply
how to repair laptop charger
how to repair inverter of solar system
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smps, repair, troubleshooting,
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