I know basic electronics but am totally unable to understand the Emitter-Follower configuration of transistor. Can anybody explain it in easy to understand terms? Consider the following scenario: -I give a NPN transistor a base voltage of +5V. Voltage at collector is +12V and Emitter is connected t…

srnet: One thing to ponder on is that if there is no 'NO LOAD' there is no current flow. In that case, why does current flow when I short the terminals of a battery?

Because a short is a MASSIVE load.

Because you have connected a load.

Do you know anything about 'transistor biasing'? The way you have fed voltages to the transistor should have killed it in the mean time. A transistor has three zones of operation: active zone (amplification zone), cut off zone, and saturation zone. A transistor has to be biased first to set the q…

Voltage at collector is +12V and Emitter is connected to common ground. If the emitter is connected to ground then the voltage at the emitter will be 0V, how can it ever be anything else? You need a resistor between the emitter and ground, then you will get your expected 4v2 on the emitter. Try …

If the Emitter is connected to "Ground" [i.e. the *Negative Supply*], then it's NOT the Emitter Follower configuration. Have a look at this: [CommonEmitter_vs_EmitterFollower_01.png] Notice how, in the Emitter Follower configuration, the Emitter voltage [the voltage across R2], is always one VBE …

For this sort of learning, I recommend that you download LTSpice. It is a free software simulator where you can build small circuits and test them with voltage and current probes. There is a bit of a learning curve, but you'll find some getting started videos such as Getting Started with LTspice - S…

Take the left hand circuit of reply #8. That is an emitter follower. The instant you apply a voltage to the base, current starts to flow from the base to the emitter and causes a bigger current to flow from collector to the emitter. The size of this current is the base current times the gain of the…

Can anybody explain Emitter-Follower easily?

Other Hardware General Electronics

srnet October 18, 2019, 10:12am 2

One thing to ponder on is that if there is no 'NO LOAD' there is no current flow.

Topic		Replies	Views
Boosting Signal with Transistor General Electronics	7	5833	May 6, 2021
Controlled Input Impedance for Op-Amp Circuit General Electronics	3	62	November 28, 2025
Piloter un transistor et transférer du +12 ou 24 volts... Français	30	5737	February 11, 2026
The terms "common emitter" and "emitter follower" General Electronics	5	1229	May 6, 2021
Something I don't understand about transistors General Electronics	6	2136	May 6, 2021

Can anybody explain Emitter-Follower easily?

Related topics