AW: Osc reset time

[Haible Juergen]

	>If you have a dual two-way analogue switch, with very low on
resistance, you
	>could connect the capacitor so that you can reverse its polarity in
the
	>circuit - ie a comparator detects the peak level and toggles the
switches so
	>that the connections from the cap to the ref voltage and the
current source
	>are swapped. At the next peak, they are swapped back. This should
give near
	>instant reset times.
	>I would expect this has been done before if it's workable.
	>Is this likely to have any advantage over discharging the cap ?
	>Disadvantages ?

That's brilliant !

And now, connect two high impedance buffers and a differential
amplifier directly to the capacitor, and you have a triangle wave
without extra conversion as well.

I haven't checked for disadvantages yet, but it looks very promising !

JH.