Posts by Elleanor Lopez
It was a firmware issue. SDS1xx4X-E Firmware Revision History And Update Instructions The hardware delay between ADC acquisitions was not accounted for. I flashed the scope with new firmware and ...
I was watching a video from EEVBLOG about bypass capacitors, and he presented a theory that randomly connecting different values of capacitors in parallel can create unexpected impedance spikes: ...
First I noticed that clock begins before chipselect gets pulled low on SPI. After eliminating potential sources I started to suspect the scope. I connected all 4 channels to function generator at d...
You have mentioned a few points yourself, so I will try to comment on those points and perhaps suggest some reasons to add or not to add a ground plane. You mentioned twisting (I suppose warping) ...
Do micro-RF connector mating crimp connectors are ever sold separately together with a crimp tool? For example this I have looked through a lot of pages, and can only find PCB connectors + cable a...
I was looking for guidelines of how to select appropriate cables for applications (I am interested in DC), I found IEC 183 standard which talks about high voltage cable selection for AC. Also, the ...
Some gentlemen decided to throw a hook with wire over 750kV lines in Belarus. They survived, however, I find in interesting to find out why. Assuming the connection to Earth was solid, there would...
Looking at Texas Instruments opamp OPA2211it mentions GBW of 80MHz at a gain of 100, and 45MHz at gain of 1: Looking at the bandwidth graph from Figure 10 in datasheet: It looks like 80MHz is...
The submarine built by OceanGate went missing on 18th June 2023. A lot of online criticism was directed towards the control hardware of the submarine - Logitech F710 controller. However, why i...
Rosenberger 23C25D-40ML5 specifies 500V RMS rating: Looking at the recommended landing pattern you can see that the distance between the signal landing pad and housing of the connector is 0....
Noise can be coupled between signal lines through parasitic capacitance formed between these signal lines, as $i = C\frac{dv}{dt}$ where C is the capacitance between the signal lines. Another wa...
For my own understanding I tried modelling switching off an inductive load without a freewheeling diode to observe ringing. This is the model I used: 1.) Are the two main components of the reson...
I am looking at this RF connector. I see that insulation resistance and breakdown voltage are specified, but no voltage rating: I have two questions, one functional and one safety. Functionally...
I was experimenting with a transimpedance amplifier and a photodiode, the circuit was the following: Input current was initially calculated to be 500nA, which would produce -2V output. Current s...
I have a bed for which the headrest can be adjusted. There are 2 separate power inputs for each side like in the picture: In addition, there is a set of 9V batteries on each side, presumably for...
We have ESD tables in the laboratory with Earth Bonding Points: These are directly connected to PE (I measured). It is my understanding that equipment has to be connected to PE directly and ESD m...
