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we can draw an equivalent circuit for UJT USING a DIODE and two resistors.draw a diode in emitter lead ..draw the two resistors in series.As rb1 in base 1 lead ..and rb2 in base 2 lead ..draw rb1 as variable resistor.And put a voltage to the ujt in order to get a positive voltage in base two lead.
What else can I help you with?
Why UJT triggering circuit is superior?
DPE?
Why ujt used as an oscillator?
why ujt used as amplifier
Is a UJT a voltage controlled or current controlled device?
voltageCurrent between the two bases of the UJT sets up a voltage gradient in the semiconductor. When the voltage on the emitter of the UJT rises high enough to forward bias the emitter-base junction at the voltage of the interbase gradient where the emitter is located, the UJT "turns on".
What is inter base resistance in UJT?
The bulk resistance between the two bases, which will be different for different types of UJT. Consult the datasheet for the value.
Characteristiccs of UJT?
The characteristics of a UJT are: stable triggering voltage, negative resistance, high pulse current capability and low value of triggering current.
Why UJT's equivalent circuit has a diode?
A UJT is a special type of diode with a long resistive base having 2 contacts and acting as a voltage divider. The diode junction is created at a point on this base selected to set the trigger voltage of the UJT at which it will conduct. Therefore the equivalent circuit has a diode because the actual circuit has a diode.
Why UJT triggering circuit is superior?
DPE?
What is an UJT timer?
UJT is an abbreviation for (Unijunction Transistor) the electronic component that is at the heart of a simple timing circuit. A UJT timer is a circuit used in an electonic system to deliver a specific time. For instance, a 30 second UJT timer might be used to turn on a Green traffic signal for 30 seconds, then turn off. UJT is a specifically cheap way of doing this type of timed signal. Timers using UJTs have largely be superseded by timers based on a 555 integrated circuit.
How do you draw thevinin equivalent circuit of common emitter amplifier?
bbc
Why ujt used as an oscillator?
why ujt used as amplifier
Operation of UJT and block diagram?
Explaine operation of UJT .
How does a ujt relaxation oscillator work?
The operation of the circuit is as follows: C1 charges through R1 until the voltage across it reaches the peak point. The emitter current then rises rapidly, discharging C1 through the base 1 region and R3. The sudden rise of current through R3 produces the voltage pulse. When the current falls to IV the UJT switches off and the cycle is repeated.
Is ujt is a uni polar transistor?
UJT is known as Uni Junction Transistor
How to genrate sawtooth wave by using ujt?
by connecting the ujt with proper biasing resistors
In ujt what does the j stand for?
For many people the letters UJT stand for Unitary Junction Transistor.
Why the arrow mark in emitter is base in ujt?
In a Unijunction Transistor (UJT), the arrow mark in the emitter symbol indicates the direction of conventional current flow when the device is forward-biased. The emitter (E) is the terminal where current flows out, and its arrow points toward the base region, which is the junction where the UJT operates. This configuration helps identify the emitter as the terminal that controls the device's operation, distinguishing it from the base and preventing confusion in circuit diagrams.
Why ujt called current controlled negative resistance device?
The On/OFF action in UJT is controlled by emitter current
