22 Dec
2007
22 Dec
'07
11:47 p.m.
On Dec 22, 2007, at 2:35 PM, Alexandre Souza wrote:
Good heavens, man. There are gazillions of them on eBay on any
given day.
-Dave
--
Dave McGuire
Port Charlotte, FL
Farewell Ophelia, 9/22/1991 - 7/25/2007
To actually
drive the tubes. you need something that
can handle the volage/current. Use MPSA42 transistors
- they're cheap, about 8 cents each. One transistor
per cathode. Tie the anode of the tube to the power
source of 200v or whatever. Connect each cathode to
the collector of a MPSA42, tie the emitters all to
ground. To drive a segment, drive the base high
through a 33k resistor.
Now if only I could find some nixie tubes... :o)