A unijunction transistor (UJT) is a three-lead semiconductor device with only one junction The UJT is not usually used as a linear amplifier. It is used in free-running oscillators, and pulse generation circuits at low to moderate frequencies (hundreds of kilohertz). It is also used in the triggering circuits for silicon controlled rectifiers. You can find handwritten notes on my website in the form of assignments. http://www.electronicassignments.com/ Other stuff on this site is Lab manuals and question Papers. फिजिक्स से सम्बंधित इक वैब्बसाईट है www.electronicassignments.com जिस पर हज़ारों questions पेपर solved ते unsolved लैब मैनुअल बचों के नोट्स असाईनमैंटस लैब टैटोरियलस यू ट्यूब वीडोअस, Popular Foreign Author Books ... नीचे दिये लिंक को विद्यारथियां तक पहुंचाओ www.electronicassignments.com Address # 105, Sirhindi Gatem street no. 1m Patiala (PB) phone 9888169226