how much power could be used ?
Posted: Sat Jan 08, 2011 6:33 pm
(re) reading post about ECart, HDrive and SD cart on MCD port, a question poped up :
how much power a homemade card could use from the MD ?
I mean, if I connect something on the MCD Port, ext3 port or cart port , it's using the +5V from the MD, but how much without using external AC ?
A backup system like the SMD for ex, isn't using the 5V from MD cart port but an external AC adapter...
My MD1 AC adapt output 10V at 1.2A....I'm pretty sure Sega used this value because it's what MD needed...If I connect a harddrive which use the 5V from the MCD port, perhaps I'm stealing the power from the MD and things will start to stop working...
If I remembered my electronic course, you had to compute the Watts needed...but how could I compute the watts from the entire MD sys + my own stuff ?
(sorry if it's not clear enought but electronic course is far far away!)
how much power a homemade card could use from the MD ?
I mean, if I connect something on the MCD Port, ext3 port or cart port , it's using the +5V from the MD, but how much without using external AC ?
A backup system like the SMD for ex, isn't using the 5V from MD cart port but an external AC adapter...
My MD1 AC adapt output 10V at 1.2A....I'm pretty sure Sega used this value because it's what MD needed...If I connect a harddrive which use the 5V from the MCD port, perhaps I'm stealing the power from the MD and things will start to stop working...
If I remembered my electronic course, you had to compute the Watts needed...but how could I compute the watts from the entire MD sys + my own stuff ?
(sorry if it's not clear enought but electronic course is far far away!)