Flashcards in ITEC 320 Exam 3 Deck (139)
A transistor controlled by voltage rather than by current. The flow of current is controlled by the effects of an electric field.
An element in a FET. It is the control element of the devices. It corresponds to the base of a bipolar transistor.
The terminal of a FET that is the drain for charge carriers from the FET channel.
In general, the origin of the electrical energy supplied to a device. In FET's, it is one of the electrodes.
The FET is a semiconductor device in which output current is controlled by
An electric field or gate
The control element in a FET is the
The point at which an increase in voltage from source to drain no longer produces an increase in current is called
When the negative gate voltage (VGS) stops the current flow from source to drain, the FET has reached its
Does the FET have a high or low input impedance
An amplifier in which an FET is the active device. The source of the FET is common to the input and output circuits. Input is applied to the gate and the output is applied to the drain
Does the common-source FET amplifier require complicated bias arrangements, why or why not
No, because we do not need reverse bias and its self-biased.
Common-source FET amplifiers have a high input
How many degrees is the phase shift between input and output signals in a common-source amplifier
What type of input signal does a common-source FET amplifier require to produce a large output signal
Powerful input signal (4/10v)
An amplifier where the drain is common to the input and output circuits. Input is applied to the gate. Output occurs at the source. Voltage gain is less than 1
A transistor stage in which the collector is common to the input and output circuits. Input is applied to the base. Output occurs at the emitter. Voltage gain is less than 1
In a source-follower circuit, how many degrees is the output inverted from the input
Its not, they follow one another or zero
Does a source-follower have a high or low output impedance
The voltage gain of a source-follower is less than
The source-follower has a fairly poor what
Does the source-follower circuit have a high or low input impedance
The FET is a semiconductor device in which an electrical field within the device controls
You can increase or decrease the electric field within a FET with the amount of voltage applied to the
The electric field in a FET determines the amount of current flowing from the
Source to drain
An advantage of a FET is its
High input impedance
FET's use what as part of their circuitry
FET's need what to produce a large output at the load
A small amount of input power
A common-source amplifier accepts and amplifies a
Fairly wide range of frequencies
Voltage gain formula
Output voltage/input voltage