that
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he name is still the little mermaid after the fairy tale by H.C. Andersen ; )
she has been lighter at times, in '64 and '98 someone cut her head off, in '84 her arm
588029;)
-Lasse
But one never knows whether it's really a girl :-)
-- Regards, Joerg http://www.analogconsultants.com/
Got some ribbon cable?
Best regards, Spehro Pefhany
-- "it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com
I think someone even blew her off the rock once and she had to be repaired and cemented back on. I'll never understand how people can be so stupid and destroy art just for "fun".
[...]-- Regards, Joerg http://www.analogconsultants.com/
o that
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pped
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en ;)
yep she was found in the water with a few holes
The first time she lost her head it was allegedly a famous artist who did as an artist/political happening, though it hasn't been proven
second time a photographer made a bit of money off the pictures of her headless but it was never proven that it was him who did it
though I'm sure some would say the worst that has been done to her was that she was shipped to the Danish pavilion in Shanghai for Expo 2010
-Lasse
Small diode like BAV99 used as varicap?
Vladimir Vassilevsky DSP and Mixed Signal Designs
Well, that's a problem. I like small, slim women and, from behind, sometimes you can't tell if she's interesting, or if she's a guy.
-- John Larkin Highland Technology, Inc jlarkin at highlandtechnology dot com http://www.highlandtechnology.com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom laser drivers and controllers Photonics and fiberoptic TTL data links VME thermocouple, LVDT, synchro acquisition and simulation
It's like hair. You can cut it shorter but you can't cut it longer.
-- John Larkin Highland Technology, Inc jlarkin at highlandtechnology dot com http://www.highlandtechnology.com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom laser drivers and controllers Photonics and fiberoptic TTL data links VME thermocouple, LVDT, synchro acquisition and simulation
That's where the fudge margin comes in. Snip off at a steep angle instead of perpendicular, 60-70 degrees or so. Then when you just blew past the optimum you can do a "comb-over" with the slightly longer wire. Another trick is not to twist tightly, at least not the first couple of turns. That way you can tighten it up some more and the capacitance goes up again.
-- Regards, Joerg http://www.analogconsultants.com/
That's my hometown. Right on the seawall walk at Stanley Park. The thing that looks like an amusement park ride in the background is a loading conveyor for yellow sulphur.
Cheers
Phil Hobbs
-- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 USA +1 845 480 2058 hobbs at electrooptical dot net http://electrooptical.net
Nah, the one in Vancouver doesn't need the parka because she's on the Canadian Riviera.
Cheers
Phil Hobbs
-- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 USA +1 845 480 2058 hobbs at electrooptical dot net http://electrooptical.net
But then (like me) you're long married, so it isn't such an issue.
Cheers
Phil Hobbs
(Married 30 years last month)
-- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 USA +1 845 480 2058 hobbs at electrooptical dot net http://electrooptical.net
No, but when you get close you can slide the insulation back and forth on the wires. PVC has a dielectric constant of about 3.
Best regards, Spehro Pefhany
-- "it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com
A varicap would work; the signal swing will be small. There's a great Skyworks diode kit full of diodes... varicaps, schottkies, pins, like that.
-- John Larkin Highland Technology Inc www.highlandtechnology.com jlarkin at highlandtechnology dot com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom timing and laser controllers Photonics and fiberoptic TTL data links VME analog, thermocouple, LVDT, synchro, tachometer Multichannel arbitrary waveform generators
Well, I'm long married, about the same, but that doesn't stop women from looking good. Hormones and all that. They won't miss a few photons bounced off their envelopes.
-- John Larkin Highland Technology Inc www.highlandtechnology.com jlarkin at highlandtechnology dot com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom timing and laser controllers Photonics and fiberoptic TTL data links VME analog, thermocouple, LVDT, synchro, tachometer Multichannel arbitrary waveform generators
I have some old pots that have the capacitor built in. I'll let you have them cheap. :)
Le Fri, 20 Sep 2013 16:05:35 -0700, John Larkin a écrit:
The usual trick for this would be a T capacitor bridge. Put your high capacitnce gimmick either in the output or ground branch and keep a
0.3/0.5pF at the minus input...-- Thanks, Fred.
Le Sat, 21 Sep 2013 06:31:41 +0000, Fred Bartoli a écrit:
....
Well, read all the thread correctly... Obviously it should be more than
0.6pF. Maybe 1pF with a 2.2 or 4.7pF to the output and the gimmick in the branch to ground...-- Thanks, Fred.
I used to build adjustable low value capacitors using two parallel lengths of Teflon insulated wire and some clear shrink tube. The wires were arranged in an axial arrangement (like a resistor), not radial, like a gimmick. Just slide the wires in and out of the shrink tube to adjust the capacitance. The wires had to be Teflon insulated because the insulation had to be slippery enough to slide freely. Once trimmed, I used hot melt glue to secure the assembly.
C = 1 / 3.6 ln[(d-r)/r] where: c = pf/cm r = wire radius cm d = distance between wire centers cm
For #24 AWG solid PTFE insulated wire wire diameter = 0.0511 cm OD = 0.145 cm
d = 0.145 - 0.0511 = c = 1 / 3.6 ln[(0.0939-0.0256)/0.0256] c = 0.284 pf/cm However, that's for air dielectric. For PTFE at c= 2.5, it would be: c = 0.284 * 2.5 = 0.071 pf/mm
So, you need an overlap between 2.8 mm to 11.3 mm for 0.2 to 0.8 pF.
-- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558
Interesting... Can you give some guidance on: How do you maintain mechanical stability with 2.8 mm overlap of two 1.45mm wires == ~8mm of extra wire when you stick it on the shake table? Dielectric effects of hot melt? Series inductance as a function of capacitance compared to a classical radial gimmick?
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