Hi
My understanding is that Z70U and & Z700U (and Z70W/Z700W) are identical
parts labelled by Mullard and Philips respectively. Ref: pages 49 & 65
Dance Electronic Counting Circuits.
Dance shows them together in the data tables and electrically
identical. When I get a beast (in the post) I can check the Z700U
physically but I'd be very suprised if they are different.
The Z70W/Z700W appears a direct substitute for the Z70U/Z700U except it
has twin trigger electrodes (U vs W perhaps a pun?)
The Neale that I'm scanning this morning has additional circuit examples
for trigger tubes (and dekatrons, nixies etc).
Grahame
On 23/03/2011 23:26, threeneurons wrote:
Are you really talking about the Z70U & Z70W, and there's...
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