A
low drop Mosfet Regulator for Gaasfet Pas
The
pad 1 at the Mosfet gate is for connecting a loss of negative supply inhibit.
Connect
a transistor to ground biased from C9 and hold it cut off with the –ve supply
applied thro an R to the base.
Ensure
that resistors are choosen so that loss of the –ve supply brings the transistor
into conduction grounding the Mosfet gate.
If you
use an antenna relay with additional postion confirmation contacts then wiring
these contacts also pad 1 to ground will
inhibit the Tx Supply if the relay is not in the correct Tx position.
PCB layout for printing
below.
Click here to download the layout. File prints correctly when sized to 100pixels/cm in your Graphics programme.
Observe your mirror or normal print mode depending how you produce PCBs.
For importing into another CAD programme resave as .bmp or other file type as required
