Re: typing Greek letters or math symbols
You can use synonyms in the program aText. For example, if I write oohm with a capital first O, the word is replaced with the ¦¸ symbol. Fra: [email protected] <[email protected]> P?
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Hans Chr. Aaleje
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#99564
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A company that offeres every RF connector in the universe
A company that offeres every RF connector in the universe, if they don't have it, it doesn't exist. I've been collecting RF adaptors since my first hamfest, 1966, and, we used an ungodly mess to adapt
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wn4isx <wn4isx@...>
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#99563
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typing Greek letters or math symbols
I normally type in a special font for dyslexics, Dyslexie. I can go to character map and snag Greek letters and other symbols, like those used in math, but it is a royal pain while typing. For serious
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wn4isx <wn4isx@...>
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#99562
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Re: Peak crossing switch......
Hi Mikek, I am sorry for your headaches. The symbol shows up fine on Windows, even on the received email. I typed ¡°Alt +230¡± for the Greek micro symbol. I am curious what system you are using.
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Bertho
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#99561
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Re: Peak crossing switch......
Do you mean this ¡ø (hold alt while typing 30) or this ¦Ä (hold alt while typing 235)?? AKA, alt +30 and alt+235 ¦¸ = alt+234, ? = alt+230,? ¦Ð = alt+227?? ¦Â = 6Alt+225 Mikek
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Mikek
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#99560
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Re: Peak crossing switch......
If we arbitrary guess on a total series resistance of 100 Ohm and 0.5?F and 150V, you ought to see a peak current of 1.5A and an RC pulse duration of 50 ?seconds. To make the setup much easier and
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Bertho
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#99559
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Re: High Voltage Probes
I just checked a non contact voltage detector on our ancient series Christmas tree lights. [They were my wife's family, I'd toss them if it were left to me. I hate series lights!] Anyway, the string
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wn4isx <wn4isx@...>
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#99558
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Re: High Voltage Probes
To check LED light strings make a hi-z JEFT front end for an AF amp, slide along the cord and the hum should drop when you reach the open bulb. I once had a commercial device called a or the "Ticker"
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wn4isx <wn4isx@...>
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#99557
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Re: Peak crossing switch......
The series resistance will be the AC Mains wiring and triac. The resistor goes from the triac to neutral to insure the triac behaves. There is also a 1M resistor across the 0.5uF capacitor and a push
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wn4isx <wn4isx@...>
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#99556
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Re: High Voltage Probes
I call it the genie was released. Problem with all these electronics is that once the genie escapes, it does not work its magic. BTW, I designed up a zener diode checker using an LED driving circuit.
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Derek Koonce
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#99555
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Re: Peak crossing switch......
For product testing/approval I did a circuit years ago that allowed me in software to turn it on at any point. Basically, an opto to get line sync, a variable delay and a heavy-duty relay. The
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Bertho
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#99554
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2 files uploaded
#file-notice
The following items have been added to the Files area of the [email protected] group. * /Bertho's Folder/Sync Pulse R0.pdf (
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Group Notification <noreply@...>
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#99553
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Re: High Voltage Probes
Oooo mushroom cloud...so cool, my favorite man made cloud. My first attempt at a quasi comp amp based on 2N3055 worked fine with Jefferson Airplain White Rabbit...right up until " Tell 'em a
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wn4isx <wn4isx@...>
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#99552
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Peak crossing switch......
Does anyone have any idea how difficult it is to arrange a circuit to apply power to a DUT (Device Under Test) only at peak voltage? On both halfs of the 60Hz waveform? It is an imperial PITA on
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wn4isx <wn4isx@...>
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#99551
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Re: High Voltage Probes
Fifty+ years ago , I tried using my Simpson 260 series 3 on the 5000V range to measure a microwave oven. When the mushroom cloud dissipated there wasn't much left other than the bakelite case. At
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Hugh Gilbert
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#99550
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Re: High Voltage Probes
For very interesting reading, see the works of Marie Curie. She was measuring nA currents 130 years ago. It is incredible to see the detailed work done with the quadrant electrometer and piezo
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Bertho
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#99549
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Re: High Voltage Probes
Roy, The capacitor had an internal short. It measured 240nF with a Q of zero. It is supposed to be 1?F +/- 3%. This was a very well-done service manual, 34 pages of pictures, schematics, disassembly
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Bertho
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#99548
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Re: High Voltage Probes
My 260-8 has these DC ranges: 0-1-2.5-10-25-50-250-500-1000V I like the solution to the wrong termination resistance....in some ways I wish my HV probe was like yours, I own a Pomona Electronics Model
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wn4isx <wn4isx@...>
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#99547
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Re: High Voltage Probes
I have never seen the need to measure that. And I've worked on a few of those. Nope. But surprisingly a Simpson 260, at least as old as the one I have, will measure up to 5000V. I've never used those
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Roy J. Tellason, Sr.
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#99546
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Re: PI controller time domain responce in PLL from AC responce
I could swear you said it was a phase locked loop. I get the feeling you do not seem to know what you are doing.? Am I mistaken? Andy
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Andy
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#99545
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