I'm using the following circuit with a P-channel mosfet to switch the positive line to a transceiver. I want to keep the transceiver grounded and switch it off to stop current draw from the battery.
The circuit gives the desired results and switches the transceiver off, and I get near 0 current draw when the digital pin is high.
My question is in relation with the capacitors on the transceiver. After power is cut from the transceiver if I place a voltmeter across the load (Drain and ground), I get a voltage of ~0.5V which decreases. I'm assuming this is the capacitors discharging when the voltmeter is applied. There is no current drain if I connect an ammeter to the batteries negative side, as you would expect. I'm not sure of the specs for the capacitors but I'm assuming they are typical for filtering noise etc.
Do I need to be at all concerned with this discharge voltage from the capacitors, and can it negatively impact the mosfet?