Tag: BJT

An ideal transistor would show 0% distortion in amplifying a signal. Its gain would extend to all frequencies. It would...

Like all electrical and electronic components, transistors are limited in the amount of voltage and current each one...

Bipolar Junction Transistor or BJT Current Mirror An often-used circuit applying the bipolar junction transistor is...

Input impedance varies considerably with the circuit configuration shown in Figure below. It also varies with biasing....

If some percentage of an amplifier’s output signal is connected to the input, so that the amplifier amplifies part of...

To overcome the challenge of creating necessary DC bias voltage for an amplifier’s input signal without resorting to...

Although transistor switching circuits operate without bias, it is unusual for analog circuits to operate without bias....

In the common-emitter section of this chapter, we saw a SPICE analysis where the output waveform resembled a half-wave...

While the C-B (common-base) amplifier is known for wider bandwidth than the C-E (common-emitter) configuration, the low...

The final transistor amplifier configuration (Figure below) we need to study is the common-base amplifiers. This...

Our next transistor configuration to study is a bit simpler for gain calculations. Called the common-collector...

At the beginning of this chapter, it illustrates how transistors could be used as switches, operating in either their...

When a transistor is in the fully-off state (like an open switch), it is said to be cutoff. Conversely, when it is...

Bipolar transistors are constructed of a three-layer semiconductor “sandwich” either PNP or NPN. As such,...

Bipolar junction transistors (Also known as BJTs) can be used as an amplifier, filter, rectifier, oscillator, or even a...