Manel and I had been working on a project together for many months. In the
close to two years I knew him I'd come to know him as a very talented and
engaging engineer, but more than that a genuinely fine individual and a
good friend. Shared values, shared views of the world... Conversations
abo
Hi folks,
Let's see what happens at $750 plus actual cost of shipping tracked, fully
insured and signature required on delivery.
Best regards,
Bob
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Hi Isaac,
Yes... still available.
One other person has just expressed interest as well. Nothing for days,
then two within an hour of each other. Go figure?
Please contact me on my e-mail and we can take this offline. "reply
privately to author"
Best regards,
Bob
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Hi folks,
The clock is sold...
Many thanks!
Bob
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I also like the simple current sink circuit approach, but it usually takes
just a few more parts to get a stable circuit... the most basic design with
just a resistor, transistor and op amp tends to "sing"!
See Linear Tech Application Note 105, figure 200 on page 108:
https://www.analog.com/me
Hi Paul,
I also like the "simple" current sink circuit approach, but it usually
takes a few more parts to get a stable circuit... the most basic design
with just a resistor, transistor and op amp tends to "sing"! And there's
also some parts selection to be done.
See Linear Tech Applicati
For instance... On Semi FDD3N40 or FDU3N40... 400V / 2 A / 30W in DPAK or
TO-251... I usually have a few FDD3N40 on hand and have used them in
multiple designs. There are of course many good alternatives!
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Hi Paul,
Jeff very accurately describes how I replace most SOIC and similar low lead
count parts... What he describes works and works well! I also really like
hot air...
That said, here's another technique that I sometimes use and may be a bit
easier for you if you don't have tiny diagonal cut
My ears leave something to be desired these days... Singing? What singing!
OK. My wife and animals hear it. It's real.
I use a small microphone and PC based spectrum analyzer to explore sounds I
can't hear. The mic is at the end of a bit of heat shrink tubing close to a
preamplifier on a longer
ing on a PCB? Not clear from your photos.
>
> It seems unlikely that ink used on a PCB would be conductive.
>
>
> On Thursday, January 27, 2022 at 2:52:25 PM UTC-6 Robert L wrote:
>
>> Hi folks,
>>
>> A friend received a rather nasty shock from one of his Mr. Nixi
AM UTC-8 Robert L wrote:
> Hi Terry,
>
> I guess I could have been more clear... The label plate ink is only
> *moderately* conductive; black ink on a somewhat flexible white
> substrate... the label is not FR4 pcb material and there are no metal
> layers. I have no experience u
If this uses an isolated supply (such as from a wall-wart), you need to
> touch 2 circuit nodes at different voltages in order to get shocked.
> Any chance this was from electrostatic discharge (ESD) ?
>
>
> On Friday, January 28, 2022 at 1:26:31 AM UTC-8 Robert L wrote:
>
>>
Hi folks,
Prompted by Johns DMM post, I have a mostly working Heathkit 1103 nixie
counter in fair cosmetic condition.
All display elements and annunciators light up, all switches seem to be
working as well. Counter goes out of lock over significant portions of the
input range so definitely so
Hi folks,
Counter sold and on the way to a local UPS store.
Many thanks neonixie!
Bob
On Thursday, September 8, 2022 at 10:42:17 AM UTC-7 Robert L wrote:
> Hi folks,
>
> Prompted by Johns DMM post, I have a mostly working Heathkit 1103 nixie
> counter in fair cosmetic conditi
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