AW: AW: SCR VCO?

[Haible Juergen]

	>Their major problem is one of
	>temperature drift--it's serious. Especially in the case of the
	>UJT, which is often referred to as a "junk part" by analog
	>design engineers.

Ok, the UJT may be crap. But the thyristor structure
(composed of a discrete npn and pnp) is widely
used in Korg synths and apparetly doesn't cause too 
much problems (?).

	>Both devices are not very
	>linear V/F converters, unless many schemes are undertaken to
make
	>them linear.

I don't understand this. Nonlinear V/F, or better I/F, would mean
that the trigger point would depend on frequency. Just curious ...

JH.
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