Hello! I just wanted to make sure i get this right. So we prefer to use pnp transistors for low side switch because since then we basicaly connect the load to the collector we dont have to worry that the load(say a dc motor) will influence the base voltage and by influence the base voltage i mean that the load will decrease the current and force us to use higher voltage or lower resistance. Something that is inevitable if you use an npn where a low side switch means to connect the load to the emitter. Is that right? To be clear we are talking about stuff that can cause a large voltage drop on them.