Wait...what. That won't work. Needs an inverter or something. I have some flip-flops that needs a use.
On Jan 9, 9:12 pm, Thomas Kreschollek <tk109...@gmail.com> wrote: > I like that, thanks! > > Should also work with a 555 since it will source and sink? I'm > looking to add it to All Spectrum's uC kit. Somehow I never got into > uC programing, so I end up buying it from someone else. > > On Jan 9, 9:03 pm, John Rehwinkel <jreh...@mac.com> wrote: > > > > > > > > > > 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.
