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Can someone help me solve the following please:
I'm trying to measure the time between the rising edges on two equal frequency, slow (~2Hz), almost in phase square waves. They are within about 500nS but can go down to almost 0ns. One has a random jitter of +/-25ns, the other <<1ns and signal 1...
Yes, it really uses heating to shape the beam, replacing a phased array method. More information here:
https://spectrum.ieee.org/automaton/robotics/drones/metamaterial-radar-is-exactly-what-delivery-drones-need
I can't be much help, but I doubt the 9-pin connector is RS232 serial. The patent describes using an Arcnet LAN for communication with the central computer. No mention is made of RS232 as an external interface. Arcnet is a token-passing bus network and not something you can just plug into a PC...
Have you checked the cell manufacturer's recommendations for parallel connection? Some cells are better made (closer tolerances and more stable) than others, and that impacts parallel connection. Should be OK if they are a major brand and from the same batch, I guess.
Really, without detailed...
Does your amplifier give full output down to 10V? If so, why do you need a dc-dc booster? are you connecting the cells in series (I hope so) or parallel?
Li-ion cells should not be discharged below around 3V or they suffer damage. So, even discharged this low they will still be providing 12V...
I've often heard that while hot melt glue is fine for temporary mechanical bonding during manufacture, it's not good for long term use.
It can become brittle after a few years, can soften if something gets hot (and the repeated cycling can cause creep and bond failure) and does not necessarily...
I've used AA cells for years in high power flashlights for caving and other outdoors pursuits, also in GPS units etc. I tend to also have kit that sits for long periods of time unused, but when I need it, I need it now!
The best rechargeable AAs I've ever found are Eneloops. I don't know if...
So it does... I think that article is misleading (i.e. wrong).
Wiki's article on Silicone Rubber mentions one part or two part RTV:
https://en.wikipedia.org/wiki/Silicone_rubber
as does its article on Vulcanisation:
https://en.wikipedia.org/wiki/Vulcanization
At the end of the day, RTV just...
Re: Rubbery &quot;Goo&quot; needed to stop capacitors vibrating against PCB
Two-part RTV... I think Dow Corning do some, or maybe something like this one...
**broken link removed**
Any silicone should have a degree of 'rubberiness'; that's its nature.
- - - Updated - - -
The...
I would not recommend that particular silicone. It's acid-setting (releases acetic acid during curing). Might cause corrosion.
What you want is neutral-cure that usually release alcohol instead. Like this one:
https://www.intertronics.co.uk/product/rtv-silicone-adhesive-sealants/
I'm sure...
If it's an inductor it will give you a low resistance reading, unless it is failed open circuit.
I agree it looks different to the other resistors. That doesn't mean much though.
My money's on the 20µF capacitor.
:popcorn:
You do not need an 'operating system' to read a file system. You just need a function library that understands the file system and how to access the SD. It's quite common to do this without an operating system. In fact, for FAT16 and an SD card (which does a lot of the hard work for you itself)...
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