Switching between two parts of a circuit using basic components

Question

I'm designing a circuit in which i need to temporarily switch between different branches of it. I know that it can be done using a relay with coil etc, but I'm wondering if there is a way to do it some other way?

I know that there was similar topic, but unfortunately it was not well answered.

Basically i want to do something like this, but instead of a relay I wanna use some basic components:

^{simulate this circuit – Schematic created using CircuitLab}

Anyone got an idea?

Answer 1

Use nmos and pmos. Add a pullup or pulldown to turn one or the other on during microcontroller config.

^{simulate this circuit – Schematic created using CircuitLab}

Answer 2

Look at a family of devices called transistors. Ofcourse, what type of transistor is appropriate can only be decided once you give more requirements - how quickly are you going to have to switch between the two? What currents and voltages? How are you going to drive the circuit?

^{simulate this circuit – Schematic created using CircuitLab}

Answer 3

Implement the circuit using transistors as Joren suggested, but combine inputs A and B onto one pin with an inverter such that A is selected with the pin is high and B is selected with the pin is low. You could use a standard logic inverter or you could create an inverter with one more transistor.