UJT TRANSISTOR

Thread Starter

aragon1971

Joined Apr 7, 2008
83
hi
i want a help to solve this problem
1603528043365.png


the n=0.65 and the equivalnce resistance RBB=7kΩ the question is to find the Vp (the volage to turn on the ujt) fisrt
i find the RB1=n RBB and RB2=RBB-RB1 and the equivalance circuit is


1603529474404.png

the Vp= Vs*(RB1+R1)(/(RBB+R1+R2) ??

Thank you

George
 

ericgibbs

Joined Jan 29, 2010
11,156
hi a,
This is an LTSpice simulation of your original transistor UJT.
I would say for demonstration the results are close enough.

E
BTW: You should allow for the lower voltage on B2, due to the 400R, when calculating 'n'
 

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