IBM ps/2 P70 Plasma screen voltages

From: Paul Koning <pkoning_at_equallogic.com>
Date: Fri Apr 30 08:40:33 2004

>>>>> "Tony" == Tony Duell <ard_at_p850ug1.demon.co.uk> writes:

>> I only know plasma panels from earlier days, when they were
>> applied by their original inventor to the terminals of the PLATO
>> system. Those

 Tony> [...]

>> addressing in core memories. So those plasma panels had inherent
>> memory, no refresh needed.

 Tony> I have a plasma display on my HP Intyegral, and I am darn sure
 Tony> it gets continuosuly refreshed, The video controller, on logic
 Tony> board B, is an HP custom chip with some DRAM hung off it. The
 Tony> signals to the display itself are very similar to those used to
 Tony> drive a dot matrix LCD panel -- there seems to be a dot clock,
 Tony> horizontal sync (start of a new line), vertical sync, and a
 Tony> number of data lines.

Yes, that certainly makes sense. I didn't mean that PC type plasma
panels would use the inherent memory feature. But it still wouldn't
surprise me to see the complicated high voltage AC main power supply
just as on the original design.

     paul
Received on Fri Apr 30 2004 - 08:40:33 BST