In the paragraph just above the third image on this page the second appearance of the word oscillator should be transistor. Boldface below...

http://www.allaboutcircuits.com/vol_3/chpt_7/8.html

The relaxation oscillator in Figure below is an application of the unijunction oscillator. RE charges CE until the peak point. The unijunction emitter terminal has no effect on the capacitor until this point is reached......

 

The relaxation oscillator in Figure below is an application of the unijunction oscillator. RE charges CE until the peak point. The unijunction emitter terminal has no effect on the capacitor until this point is reached. Once the capacitor voltage, VE, reaches the peak voltage point VP, the lowered emitter-base1 E-B1 resistance quickly discharges the capacitor. Once the capacitor discharges below the valley point VV, the E-RB1 resistance reverts back to high resistance, and the capacitor is free to charge again.

Unijunction transistor relaxation oscillator and waveforms. Oscillator drives SCR.

Is this where you are talking about?

Border line, but it would probably be clearer with your correction. Dennis, our editor, will judge.

 

yes, thats what i was talking about. i see how it can go both ways, so whatever the editor says...