P38 

LAST UPDATE: 2006-04-10

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 This is a "Signal Detecting Auto Power-On Unit"  as in Rod Elliotts project 38. It is used to automatically turn on my subamp and EQ 
I have only changed some minor things from Rod's circuit :  R4 to 500 Ohms to make the circuit more sensitive  Added a two colored LED and a switch to discharge C4   A IRFZ22. instead of MTP3055 .
The box is an old modem just like my Sub EQ

             

 

 

 

 

 

 

 

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