EMAGS Study Guide - Quiz Guide: Unijunction Transistor, Breadboard, Resistor
8 Jan 2022
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To be able to demonstrate the turn on (firing) and turn off (reset) methods of a programmable unijunction transistor (put). Construct the experimental circuit as shown in figure 1. Set switches s1 and s2 as indicated in table 1. Measure and record the values of va and iak in the data table according to the position of the switches. Before firing, the voltage from the anode of the put to ground is equal to. When the gate is made more negative, the put is off. Once the put is fired, the current continues to flow through the put. When the put is conducting, va is equal to 779. 193 mv. The put can be reset by reducing the current through it below its. Observations: if i replace the power source with a negative polarity dc source after performing this experiment, the put will not be triggered and will not fire.
