The Unijunction emitter current vs voltage characteristic curve figure(a) shows that as VE increases, current IE increases up IP at the peak point. Beyond the peak point, current increases as voltage decreases in the negative resistance region. The voltage reaches a minimum at the valley point. The resistance of RB1, the saturation resistance is lowest at the valley point.
Ip and Iv, are datasheet parameters; For a 2n2647, IPpand IVvare 2µA and 4mA, respectively. Vp is the voltage drop across RB1 plus a 0.7V diode drop; see Figure (b). Vv is estimated to be approximately 10% of VBB.
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If the intrinsic standoff ratio (η) of a Unijunction Transistor (UJT) is doubled, it will alter the operating characteristics of the device. Specifically, a higher η indicates a greater proportion of the total voltage across the device that can be used for triggering the UJT. This will result in a wider range of trigger voltages and may affect the stability and sensitivity of the device in applications such as oscillators or timing circuits. Overall, the performance and response characteristics of the UJT will change, potentially allowing for different operational behavior in electronic circuits.
Explaine operation of UJT .
by connecting the ujt with proper biasing resistors
The On/OFF action in UJT is controlled by emitter current
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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.
The characteristics of a UJT are: stable triggering voltage, negative resistance, high pulse current capability and low value of triggering current.
If the intrinsic standoff ratio (η) of a Unijunction Transistor (UJT) is doubled, it will alter the operating characteristics of the device. Specifically, a higher η indicates a greater proportion of the total voltage across the device that can be used for triggering the UJT. This will result in a wider range of trigger voltages and may affect the stability and sensitivity of the device in applications such as oscillators or timing circuits. Overall, the performance and response characteristics of the UJT will change, potentially allowing for different operational behavior in electronic circuits.
why ujt used as amplifier
Explaine operation of UJT .
list and explain some important characteristics of a computer?
UJT is known as Uni Junction Transistor
explain the category and characteristics of netreprenurship
by connecting the ujt with proper biasing resistors
For many people the letters UJT stand for Unitary Junction Transistor.
The On/OFF action in UJT is controlled by emitter current