A programmable unijunction transistor (PUT) is a three-lead electronic semiconductor device which is similar in its characteristics to a unijunction transistor (UJT), except that its behavior can be controlled using external components. In a UJT, the base region is divided into two parts by the emitter. The two parts of the base form a voltage divider, which sets the operating point of the UJT. That voltage divider can be programmed with two physical resistors connected to the gate terminal of the PUT. This allows the designer some control over the operating point of the PUT.[2]
In construction, the programmable transistor is similar to the silicon controlled rectifier. It consists of four layers, two p-type layers and two n-type layers in equal proportion.[1]
programmable, unijunction, transistor, programmable, unijunction, transistor, three, lead, electronic, semiconductor, device, which, similar, characteristics, unijunction, transistor, except, that, behavior, controlled, using, external, components, base, regio. A programmable unijunction transistor PUT is a three lead electronic semiconductor device which is similar in its characteristics to a unijunction transistor UJT except that its behavior can be controlled using external components In a UJT the base region is divided into two parts by the emitter The two parts of the base form a voltage divider which sets the operating point of the UJT That voltage divider can be programmed with two physical resistors connected to the gate terminal of the PUT This allows the designer some control over the operating point of the PUT 2 Programmable unijunction transistorTypePassiveInventedGeneral Electric 1 Pin configuration anode gate and cathodeElectronic symbolGraph of PUT characteristic curve similar to UJTConstruction editIn construction the programmable transistor is similar to the silicon controlled rectifier It consists of four layers two p type layers and two n type layers in equal proportion 1 Applications editIt is used to trigger thyristors It is also used as a relaxation oscillator As of 2012 ON Semiconductor manufactured a part 2N6027 2N6028 was also made in the past 1 References edit a b c Jim Keith Programmable Unijunction Transistor Flasher PUT Programmable Unijunction Transistor Working Construction Biasing D amp E notes www daenotes com nbsp This electronics related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Programmable unijunction transistor amp oldid 1198274221, wikipedia, wiki, book, books, library,
