I'm building a battery-based wireless weather monitor for hobby project.
for longer battery life, I want to control the power of each subsystem separately.
Let's take a NRF24 modem for example: Previously, I have configured a separate Power regulator for modem. regulator had an EN pin, which could be switched on or off by changing pin level. (High-side control) this method was easy and worked well.
now, I wanted to control power the module using MOSFET instead of EN pin of regulator. I thought of using N-channel MOSFET to control the power. like this:
(Note: DMG2302UK was N-channel MOSFET)
so, My question is:
- Is this a good method? I've tried running fans and heaters in this way, but I don't know what's going to happen to modules with ICs.
- it seems that there is a pull-up resistor inside the module, but can this cause harmful operation?
- I don't have much experience in electronics. is there any other problem I didn't expect in this regard?