Sunday 12 March 2017

step by step installation universal oscillation circuit in power supply

processes of installing universal oscillation circuit 


  1. first check the sorting on secondary side main capacitor 100uf 160v OR 220uf 160v
  • if sorting is there then solve it 
  • if sorting is not there then remove EHT SUPPLY 
  • then after connect the 100W  bulb on the main capacitor of secondary side ie. 100uf 160v
  • then come in primary side fist remove the transistor or STR 
  • after removing STR or transistor check the voltage in primary side main capacitor 300V ok or not 
  • if 300V is not come primary side main capacitor then fist correct the 300V voltage 
  • if 300V OK  then connect the RED WIRE on transistor collector and BLACK WIRE  on ground power supply 
  • GREEN WIRE connect optocoupler  show in fig .


  • secondary side voltage is adjust by using variable resistance in side oscillation circuit
  • pad is use to avoid the body connection to the circuit this is place back side of FET  

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