Re: [neonixie-l] A "small" project

2013-11-26 Thread Michel van der Meij
Nice. At that time, I thought it would be "safer" to use the MOS driver rather than a controller output. It was for a 2 phase unipolar stepper motor, a big one, 10A per winding maximum current and up to 200V per winding (100V each side of the center tap). I never actually tried to do without the MO

Re: [neonixie-l] A "small" project

2013-11-25 Thread petehand
On Monday, November 25, 2013 1:15:31 PM UTC-8, Michel wrote: > > > Is that FET not warming up too much when you drive it directly from the > AVR output? > The FET doesn't warm up at all. The only reason it would warm up is slow turn-off time - the turn-on time is already limited by the inducto

Re: [neonixie-l] A "small" project

2013-11-25 Thread AlexTsekenis
Since you are doing a gated oscillator switching converter, you could consider using the on-board comparator of this particular MCU instead of the ADC. Might save you some code/CPU time. Alex On Monday, November 25, 2013 7:55:12 PM UTC, petehand wrote: > > > > On Monday, November 25, 2013 7:13:

Re: [neonixie-l] A "small" project

2013-11-25 Thread Michel van der Meij
> The inductor is a Coilcraft MSD-1278-224 – this is a 220uH SEPIC choke with dual coils.> In my application the coils are connected in series. The FET drain is connected> to one end of the pair, the other end to the rectifier, and 12VDC comes in at the> junction. With this arrangement the FET only

Re: [neonixie-l] A "small" project

2013-11-25 Thread petehand
Oops, I meant the 12V comes in one end and the FET is connected to the junction. The schematic is correct. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixi

Re: [neonixie-l] A "small" project

2013-11-25 Thread Chris Stalin
LOL, Love it. Great work! Are you PWMing a FET for power from the atmega158? Thanks On Monday, November 25, 2013 7:45:50 AM UTC-7, Michail wrote: > > Pretty. > > I didn't see the order form. :) > > Michail Wilson > 206-920-6312 > > In a message dated 11/25/2013 3:00:40 A.M. Pacific Sta

Re: [neonixie-l] A "small" project

2013-11-25 Thread Michail1
Pretty. I didn't see the order form. :) Michail Wilson 206-920-6312 In a message dated 11/25/2013 3:00:40 A.M. Pacific Standard Time, peteh...@gmail.com writes: (https://lh4.googleusercontent.com/-LS5WWI-ky2c/UpMk2OK4BrI/AEc/yf_bxteNyBE/s1600/Altoid+Nixie1.jpg) I put this

[neonixie-l] A "small" project

2013-11-25 Thread petehand
I put this little guy together recently - I always wanted to see if it could be done. I figure the audience here will appreciate it. It has multiplexed IN16 tubes, driven by an ATmega1