Discuss the applications of UJT?
The most common application of a unijunction transistor is as a triggering device for SCR’s and Triacs but other UJT applications include sawtoothed generators, simple oscillators, phase control, and timing circuits. The simplest of all UJT circuits is the Relaxation Oscillator producing non-sinusoidal waveforms.
In a basic and typical UJT relaxation oscillator circuit, the Emitter terminal of the UJT is connected to the junction of a series connected resistor and capacitor, RC circuit as shown below.
How to Calculate Emitter current for UJT based Thyristor firing circuit?
Emitter current for UJT based Thyristor firing circuit calculator uses Emitter current = (Emitter Voltage-Diode voltage)/(Emitter resistance base 1+Emitter Resistance) to calculate the Emitter current, The Emitter current for UJT based Thyristor firing circuit formula is defined as the magnitude of the current that flows through the emitter when it is in conducting mode. Emitter current is denoted by I_{e} symbol.
How to calculate Emitter current for UJT based Thyristor firing circuit using this online calculator? To use this online calculator for Emitter current for UJT based Thyristor firing circuit, enter Emitter Voltage (V_{E}), Diode voltage (V_{D}), Emitter resistance base 1 (R_{B1}) & Emitter Resistance (r_{e}) and hit the calculate button. Here is how the Emitter current for UJT based Thyristor firing circuit calculation can be explained with given input values -> 0.083333 = (10-5)/(10+50).