RE(updade): thru zero VCO questions

[Haible Juergen]

	>I wonder if you really need a flipflop and the pulse / toggle
stuff. The input
	>of the OTA already carries your up/down information. - why not
switch the
	>polarity of the modulation signal directly from that point ?
(should work
	>with a schmitt trigger - no flipflop needed at all ...)
	>
	>JH.

No - it's getting stuck at the thresholds, too.

JH.