Hello,
I am building my first PIC circuit.. for the power supply I am using a cheap wall-wart (rated 500mA) and setting the input to be 12V.
This feed a 7805 but when I check the output with no load I get ~1.45V.. So I have the following questions now:
Have I managed to fry the 7805? (I might have connected it wrong way first.. hence the doubt)
Based on the circuit attached.. how can I calculate the current required, The reason I am asking is, I want to calculate what kind of battery life I would get if i were to abandon the 7805 and go with a battery pack.. I really don't want to do this as I realize the potential of the 7805 but I also want to get my first circuit working )
PS: Ic(min)=500 mA for the BC301
I am building my first PIC circuit.. for the power supply I am using a cheap wall-wart (rated 500mA) and setting the input to be 12V.
This feed a 7805 but when I check the output with no load I get ~1.45V.. So I have the following questions now:
Have I managed to fry the 7805? (I might have connected it wrong way first.. hence the doubt)
Based on the circuit attached.. how can I calculate the current required, The reason I am asking is, I want to calculate what kind of battery life I would get if i were to abandon the 7805 and go with a battery pack.. I really don't want to do this as I realize the potential of the 7805 but I also want to get my first circuit working )
PS: Ic(min)=500 mA for the BC301
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