Unusual functions of cheap parts

clifto wrote...
Michael A. Terrell wrote:
I appreciate the
offer of the parts, but I am to the point that I don't feel well enough
to do anything at my workbench. It has been about 18 months since I felt
like trying to do anything, and most of my test equipment was water
damaged in the 2004 hurricanes. Its just too depressing to try to work
with what little is left.

That sucks. Sorry it happened to you.
Click to expand...
Yeah. I have some extra instruments not doing anything, if you feel
well enough not to use that as an excuse. I get stuff real cheap on
eBay, and sometimes Harvard types are too proud to use it. And they
also give me stuff nobody wants. A perfectly-fine HP oscilloscope,
for example. Before anybody makes a remark, yes I've used HP scopes,
used them in EE lab years ago, and have a 500MHz 4-channel Infinium
plus an Agilent's 300MHz MSO on my bench now, so hide that smirk. :)


--
Thanks,
- Win
 
Winfield Hill wrote:

Yeah. I have some extra instruments not doing anything, if you feel
well enough not to use that as an excuse. I get stuff real cheap on
eBay, and sometimes Harvard types are too proud to use it. And they
also give me stuff nobody wants. A perfectly-fine HP oscilloscope,
for example. Before anybody makes a remark, yes I've used HP scopes,
used them in EE lab years ago, and have a 500MHz 4-channel Infinium
plus an Agilent's 300MHz MSO on my bench now, so hide that smirk. :)
Click to expand...
People are funny. I had a 2 MHz scope once, did lots with it. You can
use scopes well above their f_max with a simple envelope detector.


NT
 
In article <1137980825.259214.123510@g47g2000cwa.googlegroups.com>,
<meow2222@care2.com> wrote:
[....]
People are funny. I had a 2 MHz scope once, did lots with it. You can
use scopes well above their f_max with a simple envelope detector.
Click to expand...
I had one with about a 30KHz bandwidth. The nice thing about it was that
you could switch to driving the plates externally.

It got lost in a flood :<

--
--
kensmith@rahul.net forging knowledge
 
On Sun, 22 Jan 2006 13:57:58 +0000, Michael A. Terrell wrote:
Winfield Hill wrote:
Michael A. Terrell wrote...
Winfield Hill wrote:
Michael A. Terrell wrote...

How many do you need, and can you use ones pulled from PC boards?
I may have some left that I pulled from damaged boards.

One or two may be enough for proof-of-principle measurements.

I'll see if I can find a couple for you.

OK, I'll trade you some 1500V damper diodes, with datasheets.
They should be interesting additions to your parts inventory.


Win, I did a lot of digging and the best I can find is five glass
1N4004s.
Click to expand...
As reluctant as I am to contradict a fart who's even older than me, if
it's glass, it isn't a 1N4004:
http://www.datasheetcatalog.com/datasheets_pdf/1/N/4/0/1N4004.shtml

Cheers!
Rich
 
On Sun, 22 Jan 2006 15:14:11 -0800, Winfield Hill wrote:

clifto wrote...

Michael A. Terrell wrote:
I appreciate the
offer of the parts, but I am to the point that I don't feel well enough
to do anything at my workbench. It has been about 18 months since I felt
like trying to do anything, and most of my test equipment was water
damaged in the 2004 hurricanes. Its just too depressing to try to work
with what little is left.

That sucks. Sorry it happened to you.

Yeah. I have some extra instruments not doing anything, if you feel
well enough not to use that as an excuse. I get stuff real cheap on
eBay, and sometimes Harvard types are too proud to use it. And they
also give me stuff nobody wants. A perfectly-fine HP oscilloscope,
for example. Before anybody makes a remark, yes I've used HP scopes,
used them in EE lab years ago, and have a 500MHz 4-channel Infinium
plus an Agilent's 300MHz MSO on my bench now, so hide that smirk. :)
Click to expand...
Well, I've been known to disdain HP scopes because their sync sucks,
and their knobs have terrible backlash, but at that price, hey, beggars
can't be choosers!

You already have my snail mail address - third or fourth class can't
be that expensive - I've gone some years without a scope - a couple more
weeks certainly isn't going to do me any harm! <hint, hint>

Thanks!
Rich
 
Winfield Hill wrote:
Before anybody makes a remark, yes I've used HP scopes,
used them in EE lab years ago, and have a 500MHz 4-channel Infinium
plus an Agilent's 300MHz MSO on my bench now, so hide that smirk. :)
Click to expand...
I've used H-P scopes, too. They're perfectly fine scopes if you don't need
triggered sweep[1]. Some of them even play games.


[1] even those old Telequipment units would trigger on *some* waveforms.
--
If John McCain gets the 2008 Republican Presidential nomination,
my vote for President will be a write-in for Jiang Zemin.
 
Rich Grise wrote:
On Sun, 22 Jan 2006 13:57:58 +0000, Michael A. Terrell wrote:
Winfield Hill wrote:
Michael A. Terrell wrote...
Winfield Hill wrote:
Michael A. Terrell wrote...

How many do you need, and can you use ones pulled from PC boards?
I may have some left that I pulled from damaged boards.

One or two may be enough for proof-of-principle measurements.

I'll see if I can find a couple for you.

OK, I'll trade you some 1500V damper diodes, with datasheets.
They should be interesting additions to your parts inventory.


Win, I did a lot of digging and the best I can find is five glass
1N4004s.

As reluctant as I am to contradict a fart who's even older than me, if
it's glass, it isn't a 1N4004:
http://www.datasheetcatalog.com/datasheets_pdf/1/N/4/0/1N4004.shtml

Cheers!
Rich
Click to expand...
So, you think that a single datasheet covers all manufacturers, and
all production runs? Once again, you show a great lack of
understanding. I have several glass 1N4004 diodes in front of me.


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida
 
"Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
news:43D57129.5EFD1EB8@earthlink.net...

So, you think that a single datasheet covers all manufacturers, and
all production runs? Once again, you show a great lack of
understanding. I have several glass 1N4004 diodes in front of me.
Click to expand...
400 PIV?
 
Rich Grise wrote...
As reluctant as I am to contradict a fart who's even older than
me, if it's glass, it isn't a 1N4004:
http://www.datasheetcatalog.com/datasheets_pdf/1/N/4/0/1N4004.shtml
Click to expand...
You're probably wrong, of course, as Michael Terrell points out,
but I'll have to admit that's an impressive list, and I love the
manufacturer's logos, 26 of them, all lined up. Sigh, I only have
datasheets from 20, stored in my computer. But, I have them from
Won-Top, Leshan Radio, Gulf Semi, Formosa Micro, Dachang, and
Bytesonic, to name a few they don't have, SFAICS. Plus, I have
multiple versions from several of the companies. So there!

So many files, so little time.


--
Thanks,
- Win
 
Winfield Hill wrote...
Rich Grise wrote...

As reluctant as I am to contradict a fart who's even older than
me, if it's glass, it isn't a 1N4004:
http://www.datasheetcatalog.com/datasheets_pdf/1/N/4/0/1N4004.shtml

You're probably wrong, of course, as Michael Terrell points out,
but I'll have to admit that's an impressive list, and I love the
manufacturer's logos, 26 of them, all lined up. Sigh, I only have
datasheets from 20, stored in my computer. But, I have them from
Won-Top, Leshan Radio, Gulf Semi, Formosa Micro, Dachang, and
Bytesonic, to name a few they don't have, SFAICS. Plus, I have
multiple versions from several of the companies. So there!

So many files, so little time.
Click to expand...
Correction, they had Leshan Radio, listed as LRC. What a great
site,** now I have 1n4000-series data from 35 manufacturers.
That's got to be a record. Maybe I can stop now. [smile]

** They do append their own announcement page, "This datasheet
has been download from: www.datasheetcatalog.com - Datasheets
for electronics components." but at least it's on the last page.


--
Thanks,
- Win
 
Homer J Simpson wrote:
"Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
news:43D57129.5EFD1EB8@earthlink.net...

So, you think that a single datasheet covers all manufacturers, and
all production runs? Once again, you show a great lack of
understanding. I have several glass 1N4004 diodes in front of me.

400 PIV?
Click to expand...

Sure. Why not? They are as big as the plastic versions.

--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida
 
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