# What voltage does a transistor turn on?

## What voltage does a transistor turn on?

around 0.6V
In reality, we need a non-zero forward voltage drop (abbreviated either Vth, Vγ, or Vd) from base to emitter (VBE) to “turn on” the transistor. Usually this voltage is usually around 0.6V.

Is there a voltage drop across a transistor?

A general-purpose transistor will drop about . 1 to . 3 volts across the collector/emitter terminals (VCE(sat); see datasheet) when in saturation mode (fully on).

### How much voltage Approximately should be between the emitter and base?

Since the base-emitter voltage must be 0.7 V for the transistor to be on, the voltage at the base must be 0.56 + 0.7 = 1.26 V above ground, which the biasing voltage divider must provide.

How the transistor works as a switch?

With a zero signal applied to the Base of the transistor it turns “OFF” acting like an open switch and zero collector current flows. With a positive signal applied to the Base of the transistor it turns “ON” acting like a closed switch and maximum circuit current flows through the device.

## How do you calculate voltage drop across a transistor?

Determine the voltage drop between the collector and emitter junctions (Vce) of the transistor using the formula Vce = Vcc – IcRc, where “Vce” is the collector emitter voltage; “Vcc” is the supply voltage; and “IcRc” is the voltage drop across the base resistor (Rb).

What is the minimum voltage required in the base emitter?

That is, minimum input voltage should be minimum of 3.3V to turn on the transistor (T).

### What are the different switching times of a transistor?

Switching Times

• Time delay(td) − The time taken by the collector current to reach from its initial value to 10% of its final value is called as the Time Delay.
• Rise time(tr) − The time taken for the collector current to reach from 10% of its initial value to 90% of its final value is called as the Rise Time.

Can a transistor handle 12v?

yes, you can.