Unijunction Transistor
Unijunction Transistor
Unijunction Transistor
UJT
whose value lies b/w 4 k & 10 k 2. If a voltage VBB is applied b/w the bases with emitter open (IE =0), the voltage across RB1 is
whose value usually lies between 0.51 & 0.82 Therefore voltage across RB1, V1 = VBB with IE = 0
Cont
Application of UJT
Used as a trigger device for SCR & triacs Used as Non-sinusoidal oscillator Used as Sawtooth generator Used in phase control & timing circuits
Reference
Electronic Devices & Circuits by David A Bell Electronic devices by Floyd