{195} SDC2921 Voltage Mode PWM Controller for ATX power supplies

SDC2921 Voltage Mode PWM Controller for ATX power supplies. in this video i discussed layout of SDC2921 IC Most Common configuration as voltage mode PWM controller in maximum ATX power supplies, this microcircuit is basic component to generate different voltages in at or atx power supplies, it generates pulse width modulation and monitors the output of power supply for proper function.
#electronics #atx #repair

after watching this lesson we will able to"-
how to change increase decrease the output voltage of any PWM controller
how to bypass over voltage protection
how to disable feedback circuit
how to recover or repair a dead computer power supply or any atx which turn on and then OFF automatically
To watch ATX power supply using SDC2921    • #192 How to repair Computer Power Sup...  
To watch ATX power supply with AT2005 IC    • #189 How to repair Computer Power Sup...  
i explained practical How to repair computer ATX switch mode power supply SMPS very easy. this PSU is using SDC2921 IC which is PWM and intelligent power supply monitor. 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. how to troubleshoot input electromagnet induction filter, EMI, bridge rectifier and capacitor. we get 330 VDC at main capacitor. after hat the +330 volts are applied to standby power, which is SMPS and makes +5V SB, these stand by voltage are applied to motherboard which pull down the PS ON green wire to zero level, so the ENABLE OR REMOTE ON or CONTROL pin of smps will go low that will enable pulse width modulation. and also i discussed smps basics. after watching this video you can capable to:-
understanding atx power supply basics circuit diagram schematic with complete tutorial
working of atx smps
if computer power supply does not on, or fan runs and stops, fluctuation, turns on goes off again or fail to start
short circuit, or fuse blows burns again and again
how to repair smps
how to repair computer power supply atx
fuse keeps blowing
how to repair switch mode power supply when short circuit at input
if SMPS is dead or no output
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
To watch ATX power supply using SDC2921    • #192 How to repair Computer Power Sup...  

To watch ATX power supply with AT2005 IC    • #189 How to repair Computer Power Sup...  

ATX power circuit diagram / schematic explained    • #168 ATX POWER SUPPLY CIRCUIT DESCRIP...  
   • #178 ATX POWER SUPPLY CIRCUIT DESCRIP...  

71 ATX Power Supply Circuit Description in Urdu / Hindi    • #171 ATX Power Supply Circuit Descrip...  
   • Видео  

how to increase output of SMPS    • #150 How to increase output of the SM...  

short in put of SMPS and fuse burns again and again    • {145} Fuse Keeps Blowing in SMPS || S...  

fluctuations in output of power supply    • #144 Fluctuations in output or Fluctu...  

smps basics tutorial and testing    • #141 SMPS Switching Mode Power Supply...  

feedback in smps    • #142 FEEDBACK in Switch Mode Power Su...  

how to repair troubleshoot smps    • Видео  

How to repair switch mode power supply SMPS practical troubleshooting    • How to repair switch mode power suppl...  

SMPS / PWM basics circuit description with practical switch / switching mode power supply    • SMPS / PWM basics circuit description...  

SMPS Switching switch Mode Power Supply repair Basics & Troubleshooting    • SMPS Switching switch Mode Power Supp...  

SMPS practical tutorial    • SMPS Switching switch Mode Power Supp...  
   • Видео  

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