... What f i told you, you can still buy 3 1/2 inch floppy drives? <http://www.newegg.com/Product/Product.aspx?Item=9SIA1PU0MG0458&Tpk=3%2012%20floppy> ...
82130
Andy
ingrahama
May 23, 2013 4:48 am
... You can still get them. They just don't bother putting them into computers anymore. I think you can even still get a combo 3.5" / 5.25" drive. Andy...
82131
Stefan Trethan
stefan_trethan
May 23, 2013 5:28 am
Floppy disks are still widely used in machine control, CNC, embroidery machines, test equipment, etc.. You don't throw that stuff out just because of the...
82132
Dave C
davec2468
May 23, 2013 10:44 am
That makes me exhausted just looking at ALL those gears. All that energy & resources spent to do what now is done with a few encoders, a PC, and a couple of...
82133
Derward Myrick
derwardmyrick
May 23, 2013 1:05 pm
Jim, The output was a square wave and can source and sink about 200 ma. I fed that to a tuned power amp and it had a pretty good sine wave out. The reason I...
82134
Jong Kung
jongkung01
May 23, 2013 1:25 pm
That would be pin 5 (control). Basically it is access into the internal voltage divider that says when the timing capacitor has charged enough (default = 2/3...
82135
Jim
jimpurcell2001
May 23, 2013 2:43 pm
Howard, ... Good point, I have lots or 3.5" flippiees, but I do have a USB flippy drive. Jim [Non-text portions of this message have been removed]...
82136
Jim
jimpurcell2001
May 23, 2013 2:46 pm
Andy, ... Not so, I have a USB external fllppy drive. I got it because I have so many flippies, some are commercial software. Every so often I used to reformat...
82137
Jim
jimpurcell2001
May 23, 2013 2:50 pm
Andy,m ... I don't think that square waves could be modulated without distortion, but then I never tried. :-) Jim [Non-text portions of this message have been...
82138
Derward Myrick
derwardmyrick
May 23, 2013 5:19 pm
Jung I did this back in the late 70s. If you remember from some writing to you before that I am in my eighties so I do not remember things that far back as...
82139
Dave C
davec2468
May 23, 2013 5:53 pm
That squarewave oscillator would have to have been heavily filtered to have been used on a transmitter in USA. FCC regulations to enforce "sanitary"; output are...
82140
jongkung01
May 23, 2013 5:57 pm
Oh I looked up the pin number too. I knew what the pin does but everything else had to be looked up too. And I'm just creeping into my 50. So you are doing...
82141
Jim
jimpurcell2001
May 23, 2013 7:50 pm
Derward, Been therem done that, as in having aged some, now 76. And not rememberins some details about the technoledgy that I worked on. :-) Jim ... [Non-text...
82142
Jim
jimpurcell2001
May 23, 2013 7:53 pm
Derward, You no doubt remember the TV guy Derward Kirby. [not certain whether he spelled his name the same, but suspect he did. Jim...
82143
Jim
jimpurcell2001
May 23, 2013 8:01 pm
Dave, I'm wondering whether carrier currnt 'broadcasting' would have drawn much attention though. It's range was very isolated. I recall that it was often used...
82144
Derward Myrick
derwardmyrick
May 23, 2013 8:41 pm
Jim I remember him. Most spell it Derwood, Durward or Durwood Very few Derward. Derward ... From: Jim To: Electronics_101@yahoogroups.com Sent: Thursday, May...
82145
Jim
jimpurcell2001
May 23, 2013 9:59 pm
Derward, As I recall the TV guy's name was pronounced, or sounded like ''Derwerd'. But the problem with us English speakers is that we have so many sounds for...
82146
alienrelics
May 23, 2013 10:32 pm
I would imagine the coupler to the powerline would provide quite a bit of filtering. It should be something like a parallel tuned transformer with an untuned...
82147
Derward Myrick
derwardmyrick
12:00 am
Steve that was almost how I did it. I had these on drilling rigs that were offshore or in the swamps of Texas or LA. I did not worry about filtering too much...
82148
alienrelics
12:07 am
Commercial carrier current allows a lot more power than residential is allowed. Of course if you are on an oil rig, I think you can do what you like as long as...
82149
alienrelics
12:11 am
One of my coworkers just traded a 16Gig USB thumb drive to another coworker for his old 1Gig, because his wife's sewing machine is old enough that it won't...
82150
Jim
jimpurcell2001
3:20 am
Steve, ... SEWING MACHINE? WHAT HAS A THUMB DRIVE GOT TO DO WITH A SWEING MACHINE, OR VICE VERSA? Jim [Non-text portions of this message have been removed]...
82151
Stefan Trethan
stefan_trethan
4:48 am
Probably stitches on patterns, like embroidery. CNC for girls..... ST...
82152
jongkung01
5:07 am
Ha ha ha... That's called sewing machine. In all seriousness modern day sewing machine have the kinds function thats only possible with computer control. Jong...
82153
Andy
ingrahama
7:21 am
... Sure they can. The fact that they are square has nothing to do with it. In essence they are switching signals; that feed the power amp and make it switch...
82154
alienrelics
12:47 pm
The first punchcards were for looms, after all. Yes, it is a sewing machine that will do simple embroidery. She has a program to make up that embroidery....
82155
Kerry Wentworth
kerry_8643
12:54 pm
We spent a week on the subject in Fire Control School back in 1973. Wow, that was 40 years ago! They were phasing out analog computers, at least for missile...
82156
Kerim F
ahumanbeing2000
1:41 pm
Could we see a rechargeable battery as being a big capacitor? If we could, what would be the main differences in defining them as an element in a circuit? ...
82157
ebiz_59
2:09 pm
I am thinking about starting an arduino home energy project with a current transformer on the mains. I found a device ($130)...
82158
chuck merja
ebiz_59
2:10 pm
i left out these... http://www.magnelab.com/products/Current-Voltage-Sensors/Split-Core-AC-Current-Sensor-SCT-0750 Chuck Merja GO NERDS! FIRST Robotics YouTube...
