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Calculate the intrinsic standoff ratio eta H of a UJT circuit where Rb1 is 1500 ohms and Rb2 is 265 ohms?
5.6 isn't the stand off ratio calcutaled by ===== Rb1/(Rb1+Rb2)
Describe the difference between a UJT and a PUT?
i. Constructional structures The UJT is made up of a lightly doped n-region known as the base region onto which is joined a small heavily doped p-region called the emmitter. The PUT on the other hand is a four layer device similar to an SCR except that the gate terminal of the PUT is connected to the n-region adjacent to the anode. ii.Operation The intrinsic stand-off ratio of a UJT is fixed hence operating characteristics can not be alterd. The PUT, on the other hand has operating characteristics that can be altered. These include base-base resistance,intrinsic stand-off voltage, valley current and peak current and all these can be altered by setting the values of two external resistors
Can UJT be used as an amplifier?
No we can not use it as amplfire .... it is used for switch on and off ... and frequency generator oscelator
Why does the soldering stand have a wet sponge in it?
The soldering stand has a wet sponge on it so you can wipe off and clean the soldering iron!
What is off nominal tap ratio off transformer?
It occurs when Vbase rotio of both side of the Transformer is not the same as the Rated Voltge rotio.
