I've been planning on doing something about losing the energy absorbing resistors I presently use to hold the filament voltage at 2.45V on the IV-17 Smartsocket
Here's an idea which might be of interest. Putting two filaments in series produces a requirement for 4.9V. I have a 5v supply and if i apply that to the filaments i am in the ballpark. Except, there is quite a large gradient across 2 tubes. Apologies if this has already been suggested, but I can't see much of a problem with connecting the 2 series filaments to the output of an H- bridge being switched in both directions at a few hundred Hertz. Although I can use a microcontroller output to drive the H-bridge, any switching signal could be used. No need for AC or a transformer like this. Chris -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
