Latest threads in Electronics Designshow only best voted threads
| Subject | Author | Posted | Replies | |
|---|---|---|---|---|
|
|
Laser communitions in space
Anyone hae any additional info? Excerpt from a Register article ( <> ) The Deep Space Optical Communications (DSOC) experiment will head off into the void with Psyche, an asteroid-chasing probe that...
—
|
8 months ago
|
— | |
|
|
filled vias?
Has anyone used filled vias? Epoxy? Copper? I need thermal conductivity, as in a D2PAK on one side of a board and a heat sink on the other.
22
|
8 months ago
|
22 | |
|
|
7x20mm relay tests
I'm going use an insane number of 7x20mm SPST relays, so I'm testing relays and drivers. Here's a start. waveforms are drain voltage and source current. Two surprises: that little 100 volt logic-level...
5
|
8 months ago
|
5 | |
|
|
EV charging on GFCI
I am using the portable charger on friend's house, but it's tripping the GFCI circuit. How is that possible if the vehicle is isolated from the ground with four rubber tires? The 15A power extension...
72
|
8 months ago
|
72 | |
|
|
2023 Released Goldshell KD BOX II 5TH/s 400W Asic
Buy Goldshell KD BOX Ⅱ KD-BOX 2 from Goldshell mining 2 algorithms (Kadena) with a maximum hashrate of 5Th/s for a power consumption of 400W. Get informed about new Miners and exclusive...
—
|
8 months ago
|
— | |
|
|
lunar contradictions
think that NASA just wants to spend money. As NASA aims to stay on the moon, private firms are racing to be the first to go where no company has gone before. Scientists are studying the possible...
22
|
8 months ago
|
22 | |
|
|
drum core polarity
Unshielded drum cores are cheap and have lots of L*I^2 for their size. But they leak mag fields. Maybe I can put two side-by-side and have their far fields mostly cancel. I need two anyhow. Most are...
10
|
8 months ago
|
10 | |
|
|
Need substitute for old Siliconix FET to replace Thyratron
I have a circuit to replace a 2050 Thyratron tube with a FET and an SCR C106, but I am having trouble sourcing the FET as I am not sure how to translate the only specs on it that I can find to...
33
|
8 months ago
|
33 | |
|
|
Controlled Resistor emulator / process meter
Hi I need to fool a heat pump into controlling the output temperature. Normally the heat pump is controlled with an external NTC resistor (from 1kohm to 15kohm). I will control it with USB from a PC...
17
|
8 months ago
|
17 | |
|
|
Bob Parker's Blue ESR Meter - query
Apart from capacitor ESR checking, I use this meter for checking and tracking battery ESRs. Can anyone give me a safe upper voltage level opinion for not damaging the meter in this use? I have used it...
3
|
8 months ago
|
3 | |
|
|
The Dims want to jam EVs down our collective throats
cars would have to achieve 66.4 miles a gallon in 2032, up from 44.1 mpg last year. The ramp-up for trucks and SUVs is even steeper—to 54.4 mpg from 32.1 mpg. Auto makers will have no way to comply...
9
|
8 months ago
|
9 | |
|
|
addon functions
Lewin Edwards in his dosfs file system uses the ldiv() functions shown below: sector = ldiv(offset, SECTOR_SIZE).quot and offset = ldiv(offset, SECTOR_SIZE).rem Anybody know how this is declared or,...
1
|
8 months ago
|
1 | |
|
|
LT Spice exporting a waveform
Imagine a 14-bit ripple counter driving an R-2R DAC, to make a stairstep waveform. I can clean up the glitches with a sample/hold. I'm clocking at 1 Hz. That works. I can export the waveform, but...
2
|
8 months ago
|
2 | |
|
|
How is IEEE 802.11 bb different from IrDA ?
Very recently, IEEE released the standards for the IEEE 802.11bb, for line-of-sight, secure communications between devices at near infrared. How is this different from IrDA, the standards for which...
3
|
8 months ago
|
3 | |
|
|
Ambient Temperature and Pressure Superconductor
I'm surprised no one else has mentioned this here. web site is often down from the high traffic volume. The visit counter is reset at 10AM KST or 9PM EDT. The long and the short of it is, they appear...
17
|
8 months ago
|
17 |