开云体育

Pearson and Ion Physics make CT’s suitable for RF applications. Some have a rise time as short as 2ns (=>500MHz). Some are expensive though. See Pearson’s website at www.pearsonelectronics.com Not

wrote: Agreed That requires making and calibrating an RF volt meter. I don’t know the what sort of accuracy one could achieve with that, but I don’t have any obvious ways of checking that. If that

:) -- Prof. Thomas H. Lee Allen Ctr., Rm. 205 350 Jane Stanford Way Stanford University Stanford, CA 94305-4070 http://www-smirc.stanford.edu

No, I only paid for five minutes. Orin.

It would be interesting to try these IR photodiodes with a very small lightbulb as the current sensor, where the measured current just brings the filament to the dull red glowing range. Wonder if the

Following this thread with interest. I would probably try a low value chip resistor epoxied to a thermistor. The resistor would be in series with the center lead of the coax. With a little thermal

And the character map has been around quite a long time, at least since windows 98SE. --Tom -- Prof. Thomas H. Lee Allen Ctr., Rm. 205 350 Jane Stanford Way Stanford University Stanford, CA 94305-4070

Interesting. I counted 159 pages of characters. There seems to be anything that I could imagine and quite a few I couldn’t. 73 (Regards). Max K 4 O D S. I've Never Lost the Wonder. Sent: Thursday,

We use a LISN is to provide isolation from other devices on the power system (low pass filter) and present a repatable power system line impedance so devices (both emitters and susceptors) can be

Richard Brown was not a linguist. 'Philosophy' comes from Greek: 'philo' to love and 'sophos', wisdom. Today, philosophy means 'love of wisdom / knowledge'. 'Metrology' also comes from Greek: 'metro'

I’d use a current transformer, with a suitable detector. The detector could be a simple rectifier, or a nice logarithmic power meter, such as one based on an AD8307. The article below includes the

Even if you could get accurate measurements with the limited contact area, you would still be faced with the slow response time of a glass thermometer. Makes adjustments difficult. I like the idea of

wrote: Yes, in principle. although only a small area would be in contact with the glass. The other problem is that its not possible to easily get the data in a electronic (digital or analog) format. I

Today I found: https://www.npl.co.uk/resources/q-a/metrology-and-measurement-difference Specifically, Richard Brown, NPL’s Head of Metrology explains: “If philosophy is ‘thinking about

In OS X the equivalent feature exists, if you enable it in System Prefs -> Keyboard. ("Show keyboard and emoji viewers in menu bar") Then click the icon in top right of the menu bar, leading to Emoji

The sensors that Barry Chambers is using for 30 THz comms testing are relatively low cost Melexis single pixel IR bolometers.? The 90614 is good enough to detect the thermal radiation from the Moon

Sigma Aldrich sell quantum dots in various sizes, mostly in the optical range though. CdSe/ZnS core-shell type quantum dots, stabilized with octadecylamine ligands, fluorescence λ_em ?540?nm, solid

Vary the size of the quantum hole? You call Heisenberg. Or maybe Schr?dinger, I forgot. ?

Actually, puff is quite common here in the Netherlands. So we align with the Brits here ? Wilko

While it is not beneath me to castigate Mr. Gates and his pox called Windows, there is one redeeming quality they do not discuss openly, or at least do not seem to publicize all that frequently. In