Hi!
I'd like to power my Garmin eTrex Vista GPS receiver from the PS/2 port, and at the same time connect it to a serial port to allow serial communication without running the Vista on batteries.
The Vista specifications says that power consumption is at most 0.5 W and it operates at 3 V, i.e. max 150 mA at 3 V. Users report a max of 60-80 mA.
My plan is to take +5V and GND from the PS/2 port, connect a LM317 voltage regulator to obtain a 3V output. (R1=240, R2=330, Vout=2.97 V).
Like this example: **broken link removed** **broken link removed**
Is the PS/2 port capable of powering such a load?
Any comment is most welcome.
/Mogens
I'd like to power my Garmin eTrex Vista GPS receiver from the PS/2 port, and at the same time connect it to a serial port to allow serial communication without running the Vista on batteries.
The Vista specifications says that power consumption is at most 0.5 W and it operates at 3 V, i.e. max 150 mA at 3 V. Users report a max of 60-80 mA.
My plan is to take +5V and GND from the PS/2 port, connect a LM317 voltage regulator to obtain a 3V output. (R1=240, R2=330, Vout=2.97 V).
Like this example: **broken link removed** **broken link removed**
Is the PS/2 port capable of powering such a load?
Any comment is most welcome.
/Mogens