AW: sync problems:soft

[Haible Juergen]

	>Paul Perry wrote:
	>> Is it possible to replace with a CMOS version of the 555?
	>> I understand this has no glitch....
	>
	>I once built the Elektor "Theremin". It uses two TLC555 (CMOS 555)
for
	>its HF oscillators. They do sync each other at similar frequencies,
so
	>the lowest possible audio frequency is quite high. Things are
better
	>when two separate power supplies are used.
	>
	>Ingo

This sounds reasonable - every CMOS device I know draws a
rather high current when switching from one state to the other.
I haven't checked with the CMOS timers, but I would be
surprised if they were an exception.
The EDP WASP users RC-Filters in both, VCC and GND,
to achieve some decoupling. Does anybody know how good
(or bad) this works ? I. e. does the WASP suffer from unwanted
sync, too ??

JH.