Re: RF Module Soft Power Switch for AR9x, Skyboard, 9XR-PRO
Posted: Thu Nov 15, 2018 12:27 am
That's true, I'm probably very close to that limit, just kept inside by the diode in the battery circuit and the voltage drop across the transistor and R6. The circuit components were chosen for the bluetooth module and 3.3V supply.
So a MOSFET with a higher Vgs would be better if the radio battery is more than around 8V.
I'll need to see what other MOSFETs I have!
Edit: The AR9X uses a IRML6401 MOSFET, with a Vgs of 12V and a low gate threshold voltage.
Mike
So a MOSFET with a higher Vgs would be better if the radio battery is more than around 8V.
I'll need to see what other MOSFETs I have!
Edit: The AR9X uses a IRML6401 MOSFET, with a Vgs of 12V and a low gate threshold voltage.
Mike