Can a JFET be used as a UJT?

The structure of a junction field effect transistor seems to be very
similar to that of unijunction transistor. Schematically, the main
difference seems to be that the JFET is run wit back bias and modulates
the impedance of the semiconductor channel while the UJT is also back
biased but finally becomes forward biased as the as the emitter junction
voltage increases. Typically, that is achieved by charging a capacitor
connected to the emitter. The result is a regenerative build-up of
carriers which quickly discharge the capacitor.
Are there any reasonably priced JFETs that can work as UJTs? What part
numbers are there? Are there any precaution to use to prevent damage to
the device?
Reply to
Salmon Egg
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You may get a jfet to function as a ujt, I can see where you may have difficulty. Why do you want to do this?
Reply to
Tom Biasi
For the hell of it. The same reason as for climbing mountains.
Reply to
Salmon Egg
Do you need someone to climb to the summit and throw you down a rope?
Reply to
Tom Biasi

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