Re: [neonixie-l] Re: Need help with a tubehobby clock overheating

2015-04-12 Thread Charles MacDonald
On 15-04-12 10:53 AM, Kiran Otter wrote: I can't find the 2SA1266 transistor. Tried a cross-ref site and it gave me 213 choices. x.x http://www.futurlec.com/Transistors/2SA1266pr.shtml It is a Japanese type. but their are probably hundreds that would work... use the specs in the link above

[neonixie-l] Re: Special sauce in Russian Nixie Drivers?

2015-04-12 Thread gregebert
Since this is a TTL device, the transistors will be reverse-biased with the supply reversed (power pins are typically in opposite corners, so reverse-installation reverses power). With reverse-bias, there will be almost zero current, therefore the device wont get damaged. Bulk CMOS devices

[neonixie-l] Re: Need help with a tubehobby clock overheating

2015-04-12 Thread Kiran Otter
Thanks Niek.. I'll try replacing those parts you mentioned. The IN-18s are socketed.. I wouldn't expect to have much trouble moving them to a new clock. I'd hope not, anyway. MichaelB.. I replaced C6 first, when I was having a problem with all of the tubes lighting up all sorts of numbers

Re: [neonixie-l] Re: Need help with a tubehobby clock overheating

2015-04-12 Thread Nicholas Stock
Kiran, PM me...I have all the parts you need and can send them to you for the price of postage only. Cheers, Nick Sent from my iPhone On Apr 12, 2015, at 07:53, Kiran Otter kiranot...@gmail.com wrote: Ok, I need some help to know which parts to order.. The inductor; I know it's

[neonixie-l] Re: Need help with a tubehobby clock overheating

2015-04-12 Thread Kiran Otter
Ok, I need some help to know which parts to order.. The inductor; I know it's 'inductance' is 270uh.. but what current rating? There's about 330 choices. :D I wish I could tell these things by looking at the schematic. Is