the best way i have found to DRIVE the projection displays is a cd4028 decade counter decoder driver & 2x uln2003 transistors in 16 pin dip, it take's BCD code also a good trick is to drive the lamps at 12volts if thats what there design is? and use a 12vdc to 5 vdc voltage converter and run the logic on the 5 vdc and the lamps at 12vdc
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-----Original Message-----
From: Mike Harpe <mike@...>
To: neonixie-l@...
Sent: Wed, Jul 14, 2010 6:01 am
Subject: [NEONIXIE-L] "Projection" displays
I am interested in learning more about the so-called "projection"
displays that were used in a lot of 1970s industrial rack-mount type
clocks.
Does anyone on here have a reference or source for them?
Thanks!
Mike Harpe
Sellersburg, IN USA
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Please note my new email address:
mike@...
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