Karl,
Don't be tempted to build a clock based on the XC18 tube as it will
prove very unreliable in the dark.
Nowadays I use the Z700U trigger tube as it has a primer electrode so
works in the dark. Plenty available from a UK seller.
Grahame
On 26/09/2016 06:10, karl welty wrote:
@Grahame Marsh - I have been going back over your rather detailed PDF
on the trigger tube clock, as well as the J B Dance info. Downloaded
the stuff over a year ago, making much more sense these days. The
split resistors after the cathode are really rather critical, as I now
see and have more personal experience hands-on with the circuits. That
voltage divider is really keen.
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