- #1
Trespaser5
- 19
- 0
Hello,
I've been playing with transistors on a circuit simulator and found that it doesn't matter on an NPN transistor whether I put the load on the collector or emitter side, the load still has the same current flowing through it. The same is true for the PNP transistor, however when I physically wired a pnp inductive sensor up to a relay with the load on the collector side there was not enough current flowing through the relay to activate it, can anyone explain why ?
I have wired up PNP and NPN components in certain ways for years but don't really know why.
Kind regards
Kyle
I've been playing with transistors on a circuit simulator and found that it doesn't matter on an NPN transistor whether I put the load on the collector or emitter side, the load still has the same current flowing through it. The same is true for the PNP transistor, however when I physically wired a pnp inductive sensor up to a relay with the load on the collector side there was not enough current flowing through the relay to activate it, can anyone explain why ?
I have wired up PNP and NPN components in certain ways for years but don't really know why.
Kind regards
Kyle