I no longer breadboard projects, because PC boards are so inexpensive and
their quality/neatness far exceeds anything I could do on a perfboard. I
recently did a small HV supply for nixies; for $21 US I got 3 high-quality
PCBs from OSH Park. They charge $5 US per square-inch, which is great for
The only components in there were resistors and the breadboard itself. Voltages
were nixie level. I would say it was either a resistor or the breadboard
itself. I am pretty religious about measuring stuff before I turn the power on
(and after), and if there had been anything more complicated in
Sweet, thanks guys! I plan on putting the high-voltage portion of the
circuit on a separate breadboard to keep things on the "safe" side. I'm
pretty anal about making sure my connections are correct before I power any
circuit up.
Paul, are you sure it wasn't a resistor, diode, or even a cap?
Subject: RE: [neonixie-l] Re: IN-14 and Mystery Tube?
It wasn’t the circuit. And just bread-boarding stuff, so if something breaks
it gets junked!
From: 'Terry S' via neonixie-l
Sent: Monday, March 13, 2017 9:27 AM
To: neonixie-l
Subject: [neonixie-l] Re: IN-14 and Mystery Tube
It wasn’t the circuit. And just bread-boarding stuff, so if something breaks it
gets junked!
From: 'Terry S' via neonixie-l
Sent: Monday, March 13, 2017 9:27 AM
To: neonixie-l
Subject: [neonixie-l] Re: IN-14 and Mystery Tube?
Seems unlikely. If it smoked, you did damage. Nothing in the semi
Seems unlikely. If it smoked, you did damage. Nothing in the semi world
gets hot enough to cause smoke without some damage.
Revisit your circuit. If it hasn't failed yet, it will.
Terry
On Sunday, March 12, 2017 at 10:19:55 PM UTC-5, Paul Andrews wrote:
>
> Tell me about it :-/ I had smoke
Tell me about it :-/ I had smoke coming out of something the other day.
Amazingly nothing was damaged. Live and learn!
On Sunday, March 12, 2017 at 10:17:17 PM UTC-4, gregebert wrote:
>
> *If everything is properly connected*, even an internal short in the
> 74141 that leaked high-voltage back
*If everything is properly connected*, even an internal short in the 74141
that leaked high-voltage back to the Arduino, which seems unlikely, would
be limited to a few mA so it's unlikely to cause damage.
Your biggest risk is a hookup error, or possibly ESD damage to the Arduino
from
Thanks! It looks like the leads were clipped, so I believe no desoldering
was done. The cathodes look extremely shiny/polished, so my hunch is that
this calculator just sat in some Ukrainian basement collecting dust, maybe
used every once in a while.
Another question, I bought a six pack of
