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Description
Circuit showing a 9 volt power supply . Here we have used a bridge rectifier and 7809 ic for making this circuit.Where the ic regulate the output to 9 v,1 A .This voltage every time constant.Are you interested ?

Circuit diagram with Parts list. 

 


Notes. 
  • If a current of 300 mA or above is required, fit a proper heat sink to the IC 7809.
  • If 1A bridge is not available, make one using four 1N 4007 diodes.
 
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