Latest threads in Electronics Designshow only best voted threads
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Value of Time
I visited a medical office web site and tried to get information on where t hey are and who practices in which office. I tried three different ways on their web site and none of them returned any...
8
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4 years ago
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8 | |
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T904 board
Here's another big board. This is the main part of a test set to production test a laser controller. Upper-left is a MicroZed, which is the compute/FPGA and communications bit. Upper right are a...
5
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4 years ago
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5 | |
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Re: Petty White Nationalists
Whoey Louie wrote in news: No. That is what you said in your post. What you apparently did not do is actually read the thread and the discussion, while you are clearly and merely still on your...
15
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4 years ago
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15 | |
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Harvesting energy from 3-phase
A customer has a three-phase supply drawing from 50A to 100A at nominally 60Hz. He wants to tap some power from this without any electrical contact, so probably using say three current transformers...
20
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4 years ago
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20 | |
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Low voltage negative resistance oscillator design, lessons learned
Don't bother with discretes if you want a negative resistor when you have low psu headroom, all the discrete negative resistance topologies, lambda diodes, foldback limiters, etc. are bad at a couple...
119
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4 years ago
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119 | |
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Amplification factor for common emitter amplifier
Is it possible to calculate the amplification factor for an amplifier,, e.g., a common emitter amplifier. This is because the amplification depends very much on the biasing condition, and so without a...
37
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4 years ago
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37 | |
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OT: Repeated calls
"Microsoft Refund Department please". Do not hang up. You have paid for your computer technical support a few months ago. We are calling because we have been ordered to refund your money as the...
13
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4 years ago
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13 | |
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Bipolar Semiconductor and SMD Ident database update190807
The smd marking code data base is updated, to include two- terminal devices, power supervisory circuits, GaAs mmic devices, transient suppression devices. Many typos and redundancies are addressed....
3
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4 years ago
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3 | |
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600MHz controller board, Teensy 4.0, $20
Hardworking uP genius, Paul Stoffregen, has introduced a new 600MHz 32-bit ARM Cortex-M7 controller board, in a compact 1.4 by 0.7- inch Teensy form factor (like Teensy 3.2). I imagine running one at...
11
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4 years ago
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11 | |
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Rigol DSO question
Is there a way to set up a Rigol scope, DS1102E in this case, to check for longer term frequency stability of some signal? It seems to display frequency of signals sometimes when it can figure it out,...
3
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4 years ago
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Cap labeled 100 16F, is 16F the voltage?
Here's a picture of two caps, one labeled 100 16F and the other 22 16F. Is the F the voltage? Thanks, Mikek
12
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4 years ago
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12 | |
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AoE x-Chapters 3x.18, audio power transistors
I've been too busy lately, working on the book, to look at the conversations around recent x-Chapter draft postings, but will get time soon. Meanwhile, an email from our editor prompted a post this...
3
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4 years ago
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3 | |
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Another Ceramic Cap Anecdote
Anecdote, since the plural of "anecdote" is not "data". It is suggestive though... 0.47uF 16V X7R 0603, Samsung CL10B474KO8NNNC. Withstands over 120V without breakdown. Tested in a LLC resonant...
2
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4 years ago
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Microcap is now free
I used to use verion 5 I think it was until LTspice came along...
6
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4 years ago
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6 | |
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Second source horror stories
Way down the 2SK3018 thread, >> WARNING. Be advised that every manufacturer of a given part (the >> 2SK3018 in this case) runs their fab differently, and you may find that >> those particular specs...
30
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4 years ago
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30 |