> I once saw a method for getting BOTH halves of the NE-2 to light up. > > img503. imageshack. us /img503 /4753 /neondrivetj5.gif > > I have never gotten it work. Anyone have any suggestions on making it > work right?
It attempts to derive the drive for the second transistor by phase shifting the pulses with the capacitor. It would tend to work well only at one frequency. Here's the approach I use: http://www.vitriol.com/images/tech/ne2both.gif High input lights one side, low lights the other side, a square wave oscillates between them. At one hertz, this makes a nice colon indicator, hopping back and forth visibly between the electrodes. At a hundred hertz or higher, both appear to be lit. You can use a transistor as the inverter, or drive both transistors directly from microcontroller I/O pins - if you do it that way, if you turn both transistors on or off at the same time, the light will go out. If one is on and one is off, you light one electrode. - John -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
