Mike - K8LH
Well-Known Member
Gentlemen,
Can anyone tell me how much current I might be able to pull from a laptop serial port with this circuit please? The circuit appears to work well on my laptop running 9600 baud firmware on the PIC with 4.76v at the input to the LM2936 regulator and 3.3v at the output... I'm hoping I can pull about 2-3 ma total...
TIA... Regards, Mike
Can anyone tell me how much current I might be able to pull from a laptop serial port with this circuit please? The circuit appears to work well on my laptop running 9600 baud firmware on the PIC with 4.76v at the input to the LM2936 regulator and 3.3v at the output... I'm hoping I can pull about 2-3 ma total...
TIA... Regards, Mike