Hello! Can someone please test this circuit and tell me the results. Theoretically it should work and its with minimum components. I do not get along with my simulator later (Orcad).
The idea is simple: when the 5VDC source is connected, that switches the PMOS transistor off and the 9VDC battery power soucrce. When the 5VDC is disconnected, the resistor on the PMOS gate grounds it and the transistor should conduct, connecting the load to the 9VDC battery.
The idea is simple: when the 5VDC source is connected, that switches the PMOS transistor off and the 9VDC battery power soucrce. When the 5VDC is disconnected, the resistor on the PMOS gate grounds it and the transistor should conduct, connecting the load to the 9VDC battery.
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