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Answer Posted / c.kumaresan
A unijunction transistor (UJT) is an electronic
semiconductor device that has only one junction. The UJT
has three terminals: an emitter (E) and two bases (B1 and
B2). The base is formed by lightly doped n-type bar of
silicon. Two ohmic contacts B1 and B2 are attached. A
voltage-controlled switch that controls current.
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