The coding I do for a paycheck mostly consists of web backends, high
performance graphics stuff, hardware control (device drivers), or data
conversion.
Any particular language or were you using one of the mathematics
packages?
Banged the whole thing out in C. It modeled
The 2SB54 was one of the standard setup in 6-transistor radios for many
years in my country.
As far as I can recall (and I salvaged many of them in my teen years) the
usual layout was:
1 x 2SA52 1st Converter/Oscillator
2 x 2SA49 1st and 2nd IF stages (@455KHz)
1 x 1N34 (or 1N60) AM Detector
1
Back to blinking neon lamps. Here's the circuit used in that old Radio
Shack kit:
https://lh6.googleusercontent.com/-tU3_rsWns3U/U0O3mXeFwEI/MOI/lJm9nsEYYcM/s1600/Neon_Blinker1.gif
Only needs 5 resistors, 5 caps, and 5 neon bulbs. Can be powered with as
little as 90V, but a nixie 180V
Back to blinking neon lamps. Here's the circuit used in that old Radio Shack
kit:
There's a great resource of the old Radio Shack P-Box kits here:
http://my.core.com/~sparktron/pbox.html
The 28-130 Goofy Lite is there, along with all its instructions. The page
with the schematic is here:
Great to see the Radio Shack P-Box kits again!
But, where's the intercom? I guess by that time
it was discontinued. I used that one more than any
of the others.
Chuck
Original Message
From: jreh...@mac.com
To: neonixie-l@googlegroups.com
Subject: Re: [neonixie-l] Re: Whatbox
Date
Bookmarking that P-Box link ! Memories of my early teen years. Thanx !
I wouldn't use that variation of a blocking oscillator, they use as their
boost supply. That's a favorite circuit of theirs. Anytime they need a
pulse train, out comes a center-tapped xfmr, and a xstr. You see it a lot
in
On Tuesday, 8 April 2014 16:22:36 UTC+1, threeneurons wrote:
Good luck finding those Japanese germaniums ...
On eBay at the moment - Toshiba 2SB54s at about USD 5
eachhttp://www.ebay.com/itm/2SB54-Transistor-x-1-pieces-/160937398278...
(from Littlediode)
Nick
--
You received this message
On 14-04-08 11:38 AM, Nick wrote:
On Tuesday, 8 April 2014 16:22:36 UTC+1, threeneurons wrote:
Good luck finding those Japanese germaniums ...
On eBay at the moment - Toshiba 2SB54s at about USD 5 each
http://www.ebay.com/itm/2SB54-Transistor-x-1-pieces-/160937398278...
(from
Well, how about that ! A few months ago, I was searching for 'em, but it
only came up with the Russian jobs. Though, I'm not looking to replicate
that kit exactly, so I'll pass on them. For someone who feels more
nostalgic, that'll be good.
All I Know, as a kid, that it was tougher to kill a
The folks on this board know way more than I do about what was used to
power historical equipment. I only worked with batteries for a year (25
years ago) as a technician (go there, do that) with the small watch cells
and the only high-voltage work we did was a 5 cell pack of 1.5V AgMnO cells
the only high-voltage work we did was a 5 cell pack of 1.5V AgMnO cells that
was boosted by a customer's device to higher voltage (think of what the
Invisible Fence collar unit does and you get the idea).
I was thinking of nixies, for some reason.
My interest is in the physical processes
On 14-04-06 04:12 PM, Tidak Ada wrote:
Hi Charles,
Can you tell me the type Zn-O2 Cell that could be used for camera's and
exposure meters? I am still preserving some PX625's in the fridge, but once
they will be empty.
Do they stand longer as those for hearing aids? Or can you even stop the
Hi Charles,
Thanks, great information.
eric
-Original Message-
From: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] On
Behalf Of Charles MacDonald
Sent: zondag 6 april 2014 22:26
To: neonixie-l@googlegroups.com
Subject: Re: [neonixie-l] Re: Whatbox
On 14-04-06 04:12
Can you tell me the type Zn-O2 Cell that could be used for camera's and
exposure meters? I am still preserving some PX625's in the fridge, but once
they will be empty.
Just get a MR-9 adapter and then you can use common cells and not have to
recalibrate your camera like you would with a
Can you tell me the type Zn-O2 Cell that could be used for camera's and
exposure meters? I am still preserving some PX625's in the fridge, but once
they will be empty.
For a lot of solid data on battery replacements, this is a worthwhile document:
I love the orange glow of Nixies, and a do-nothing box would distract me
for hours. I only have one Nixie device, a clock (from Taylor Electronics)
that sits in the bedroom and also serves as a nightlight. Currently out of
commission as it took a tumble off the ledge and the power plug pulled
Let's apply some engineering to see what kind of battery would do the job.
Assuming a neon strikes at 90V and extinguishes at 60V, the average voltage
across the resistor would be 15V. Initially, I arbitrarily choose the
series resistor to be 1M and the capacitor to be 2.2nF. The flash rate
My kids call me Buzz Killington when I remind them of the safety
implications. Still, maybe a gentle reminder that a)any size cell in
series at these voltages magnifies the results when any individual cell
exhausts the reactants within it. b)the electrolyte in Lithium cells is
I used to work for one of the major battery producers in their RD facility
and because I am rampantly curious, asked many questions
You sound like me!
This is a long-winded explanation that says, if you assemble a 90V cell, use
the chemistry they did back then with the type of cells they
I'm no battery geek, but that last pdf was fun to look at ;-)
Cheers, Frank
-Oorspronkelijk bericht-
From: John Rehwinkel
Sent: Saturday, April 05, 2014 4:06 PM
To: neonixie-l@googlegroups.com
Subject: Re: [neonixie-l] Re: Whatbox
I used to work for one of the major battery producers
I always heard them referred to as an Idiot Box. Neon relaxation
oscillators are fun. Such a device can be built where the lights blink in
random patterns, or they can be configured to flash in sequence.
90 volts worth of 9v batteries is expensive, and a true B battery cost even
more. I
Speaking of batteries. I don't know how many of you buy batteries
(cells) at Harbor Freight Tools, but be aware that they sell several
different cells with different chemistries. Alkaline, which I've bought
lots of and had no problems, and some VERY INEXPENSIVE cells, that I've
been told by
Wow, it's been a while since I saw one of those.
These are better value - 75V in this pack for $3. But you'd have to make a
holder.
http://www.ebay.com/itm/50pcs-x-AG13-G13-L1154-LR44-SG13-357-A76-303-GP76-Button-Cell-Coin-Battery-T7-/121208181765?pt=US_Single_Use_Batterieshash=item1c38921405
On Friday, 4 April 2014 09:30:19 UTC+1, petehand wrote:
Wow, it's been a while since I saw one of those.
These are better value - 75V in this pack for $3. But you'd have to make a
holder.
How about these? 120v for $6.04. You'd only need to use 8 of them to get to
96v. With a little metal spacer they'd probably fit in a AA battery holder.
http://www.ebay.com/itm/10-pcs-GP23A-12V-Alarm-Remote-Alkaline-Batteries-GP-23AE-21-23-A23-23A-23GA-MN21-/300692052849
On Friday, April 4,
On 14-04-04 04:41 AM, Nick wrote:
On Friday, 4 April 2014 09:30:19 UTC+1, petehand wrote:
LR44 are only 150mAh - PR44 (Zn/air) are 600mAh - somewhat better - the
Hg ones, MR44, are now banned.
What about the SR44 (Camera Batteries - silver Oxide 1.55V) I was told
they were more powerful
How about these? 120v for $6.04. You'd only need to use 8 of them to get to
96v. With a little metal spacer they'd probably fit in a AA battery holder.
They're only about 55mAh, but yeah, that's cheap for a bunch of volts. I use
one or two of them in series to replace 22.5V batteries in
I remember the circuit, but not that box. RadioShack even had a kit with 5
neon bulbs. I remember that one 'cause I bought one.
Couple of power options. (1) 10 9V batteries, in series. With simple relax
oscillators, those should last forever.
(2) eBay a nixie supply. Some go down to 90V. I'd
On 14-04-03 12:07 PM, threeneurons wrote:
I remember the circuit, but not that box. RadioShack even had a kit with
5 neon bulbs. I remember that one 'cause I bought one.
Couple of power options. (1) 10 9V batteries, in series. With simple
relax oscillators, those should last forever.
(2) eBay a
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