Some XC24 did go on Ebay - perhaps a year ago now - I missed the auction
totally but did ask the vendor if he had more but alas not. However,
your suggestion Nick, of using a pair back to back does work fine. In
fact mullard documentation suggest that - i.e. using two Z700U rather
than a single Z700W (has two triggers).
GTE175M does appear on Ebay - I've bought about a dozen.
My focus is now on the Z700U - this can be used in ring counters and
also as an interstage dekatron link. I usefulness of the Z700U is it
has a keep alive cathode and so works in complete darkness. My XC18
trigger tube clock is for demonstration use only - it dies in complete
darkness (a 8W UV lamp over it does keep it operating). I also want
to try using a Z700U as a relaxation oscillator driving a dekatron as a
variable speed spinner a la three neurons.
Grahame
On 23/03/2011 16:41, Nick wrote:
I'm still looking for some XC24s... never even detected a hint of any
anywhere...
Nick
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