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A Programmable Unijunction Transistor (PUJT) is a type of semiconductor device that functions similarly to a traditional unijunction transistor but offers the ability to adjust its characteristics through external programming techniques. It features a variable resistance that can be controlled by applying a voltage, allowing for different firing points and performance characteristics. This flexibility makes the PUJT suitable for applications such as timing circuits, oscillators, and pulse generation. Its programmability enhances functionality in electronic circuits, enabling more versatile designs.
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Operation of UJT and block diagram?
Explaine operation of UJT .
How to genrate sawtooth wave by using ujt?
by connecting the ujt with proper biasing resistors
Why ujt called current controlled negative resistance device?
The On/OFF action in UJT is controlled by emitter current
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 Timers using UJTs have largely be superseded by timers based on a 555 integrated circuit.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 ujt exhibits negative resistance characteristics?
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Why ujt used as an oscillator?
why ujt used as amplifier
Operation of UJT and block diagram?
Explaine operation of UJT .
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 ujt called current controlled negative resistance device?
The On/OFF action in UJT is controlled by emitter current
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 the basic applicatjon of a ujt?
oscillator
Can ujt be used to trigger scr?
no
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.
Why UJT triggering circuit is superior?
DPE?
Characteristiccs of UJT?
The characteristics of a UJT are: stable triggering voltage, negative resistance, high pulse current capability and low value of triggering current.
