Activity for TonyStewart
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Comment | Post #279493 |
Dear Olin, I think you are using bit rate efficiency with overhead to define effective data rate, both which have nothing to do with the bit/s baud compression technology
Symbols can stuff more bits per symbol such as the Baud symbol in a modem after Émile Baudot who invented the Baudot code (Bodo... (more) |
— | almost 4 years ago |
| Edit | Post #279442 |
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— | almost 4 years ago |
| Edit | Post #279442 |
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— | almost 4 years ago |
| Edit | Post #279442 |
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— | almost 4 years ago |
| Edit | Post #279442 |
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— | almost 4 years ago |
| Edit | Post #279442 |
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— | almost 4 years ago |
| Edit | Post #279442 |
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— | almost 4 years ago |
| Edit | Post #279442 |
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— | almost 4 years ago |
| Edit | Post #279442 | Initial revision | — | almost 4 years ago |
| Answer | — |
A: How to estimate time of completion while developing an electronic product? In my 15 yrs of intense deadline R&D for new state-of-the-art design in my 45yrs experience, estimation of time is inversely proportional to the number of mini failures from bad assumptions from which you learn to expand your understanding of everything. You don’t have to be brilliant, that helps imm... (more) |
— | almost 4 years ago |
| Comment | Post #279010 |
The cap must be low ESR type as there is also an R ratio from arc negative resistance to cap ESR voltage divider. The. Common mode series R and TVS diodes provide secondary clamping with current limiting R chosen for 1kV to TVS Rs. The arc -ve Rs was proven by Faraday to be inverse to current densi... (more) |
— | almost 4 years ago |
| Comment | Post #279010 |
Erhm When the resistor arcs it will become a capacitance transformer, 200pF/100nF = 0.2% of 15kV
so move the caps to the shunt R and make the current loop small and close to the injection PT. The cap must be low ESR type as there is also an R ratio from arc negative resistance to cap ESR voltage di... (more) |
— | about 4 years ago |
| Comment | Post #279010 |
With 0 tolerance parts this amplifier acts with open loop gain as the feedbacks are equal and cancel. Olin is correct, and the tolerance stack up would make this an unpredictable outcome. This design fails because of unstated assumptions for designs specs, yet intuition and experience tells it won’t ... (more) |
— | about 4 years ago |
| Edit | Post #279413 |
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— | about 4 years ago |
| Edit | Post #279413 | Initial revision | — | about 4 years ago |
| Answer | — |
A: How to plot the I-V curve of a tunnel diode? How to test a Tunnel diode in 25 words or less. - With DC bias = 490mV with fine tuning and a small signal swing of 60mV you can generate a IV negative slope of -16 Ohms. (more) |
— | about 4 years ago |
| Comment | Post #279280 |
Don’t take down vote personally, it means some jerk thinks you made a bad assumption or statement. If they give no feedback or value added comment , ignore those trolls who have communication issues. You seem competent enough to make intelligent questions, but watch out for unstated assumptions. (more) |
— | about 4 years ago |
| Edit | Post #279388 |
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— | about 4 years ago |
| Edit | Post #279388 | Initial revision | — | about 4 years ago |
| Answer | — |
A: Using FET based followers and design rules Allow me to address the MOSFET only as a source follower. - this has very unpredictable linear use without voltage = current feedback as the RdsOn at threshold has a wide tolerance.(>20%) (Many wider than the next example). However it is extremely popular in dual N ch. designs for a Half Bridge ... (more) |
— | about 4 years ago |
| Comment | Post #279228 |
That’s the spec on the tightening of the connectors to achieve desired low loss without removal of excessive gold plating. (more) |
— | about 4 years ago |
| Comment | Post #279302 |
@Lundin. Low value added readers who fail to communicate and downvote are called Trolls (more) |
— | about 4 years ago |
| Comment | Post #279016 |
have fun learning.. maybe I'll make a Youtube or Zoom or any forum to train a group if there is interest. But I need motivation to do this. (more) |
— | about 4 years ago |
| Comment | Post #279016 |
This article has value to share your method that works for you. I learned 45 yrs ago when we had no tools except paper and pencil and experiments. So it worked for me too. But now I can do so much more using Falstad's simulators, that its amazing as long as you know to make ideal parts real C+ESR,... (more) |
— | about 4 years ago |
| Edit | Post #279302 |
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— | about 4 years ago |
| Comment | Post #278856 |
@Olin's assertion to resonant frequency is totally bogus. Water has absorptive properties over many decades of f without this resonance. http://www1.lsbu.ac.uk/water/microwave_water.html#loss This is a good reference but fails to discuss the ionic behaviors of contaminants.
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— | about 4 years ago |
| Comment | Post #279302 |
IF you are an experienced EE and down vote this without comments you are in contempt of your own ego issue and have no business here. (more) |
— | about 4 years ago |
| Comment | Post #278856 |
false assumption on resonant frequency of water. -1 (more) |
— | about 4 years ago |
| Edit | Post #279302 |
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— | about 4 years ago |
| Edit | Post #279302 |
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— | about 4 years ago |
| Edit | Post #279302 | Initial revision | — | about 4 years ago |
| Answer | — |
A: Microwave oven interfering with WiFi on the 2.4GHz band Microwave Materials, Spectrum then EMI effects on SNR of WiFi, BT. There are a lot of measurable parameters in microwave dielectrics which affect; - Dielectric Constant , Dk between conductors and thus Impedance , Zo - scattering parameters in a transmission path from mismatch and losses ... (more) |
— | about 4 years ago |
| Comment | Post #279016 |
For professional development, it is important to define the performance and assumptions desired before starting the design. I have some doubts on this design but then there are missing assumed values (more) |
— | about 4 years ago |
| Comment | Post #279016 |
TL;DR but very well-prepared WTG and image readability can be improved with Irfanview/Gimp with contrast+brightness (more) |
— | about 4 years ago |
| Comment | Post #279228 |
Then s21 losses in the connector threads of 0.1dB is good 0.5dB is bad, so calibrated torque is important.
(more) |
— | about 4 years ago |
| Comment | Post #279228 |
Now that you grasp the basics, the geometry is a big factor moving towards 5% of the wavelength and beyond. Although video SA's are 75 Ohms the std versions are 50 Ohms. But the only difference in coax is the ratio of the conductor radius for outer/inner.
In your example the small solder gap add... (more) |
— | about 4 years ago |
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