A good article about signal distortion in a Butterworth low pass opamp filter using C0G and X7R MLCCs. https://www.edn.com/signal-distortion-from-high-k-ceramic-capacitors/
Archive for the ‘Errors’ Category:
2023-12-04 CR Car Reliability Report Explained – Important Details
One issue Consumer Reports had was the EVs and PHEVs were a smaller sample size, leading to one ‘bad apple’ skewing the overall results. So read this article for a better explanation before jumping to conclusions. Also, Tesla models 3 and Y are recommended by CR. Adding Context To That Consumer Reports Electric Car Reliability
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2023-10-06 The Grass Is Blue Said The Donkey
It’s very unwise to argue with a fool. But I still do it on occasion. https://www.facebook.com/reel/3195935264047649?mibextid=Q6uVi7
2023-08-30 The Apple //e Memory Is Not Tested For Errors
Long ago, I was typing away on my Apple //e and Applewrite, and I noticed that one of the words was misspelled – instead of garden it said farden. So I corrected it and went on. Then later, I noticed it was still misspelled! So I corrected it, and went on. Just out of curiosity,
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2023-07-10 If Only Hillary Had Been Elected, We Wouldn’t Be In This Mess
So, so true, and so sad. I’ve been saddened by this thought many times. If only…
2023-07-07 Tesla Sudden Acceleration Due To Voltage Spikes
This could affect all models. The heavy power could have caused a negative voltage spike that mimics a pressed accelerator. https://www.notebookcheck.net/Sudden-Tesla-acceleration-attributed-to-voltage-spikes-that-may-have-tricked-NHTSA-into-ruling-it-driver-error.732407.0.html
2022-01-05 Electric Dryer And 240 VAC Line
From my reply in FB group I Take Pictures… Steve Spence Said, “your electric stove, water heater, and dryer use the full 240.” I don’t *have* any of those appliances; they’re all natural gas. My coworker asked me to fix her electric dryer that she had just had installed. She said the dryer ran but
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2020-06-23 LM386 1W Mono Amplifier Input Jack Reconfig
A year or so ago I bought a few 1W mono amplifiers from a Chinese eBay seller for cheap – see the attached photos. The only marking on the PC board is YX-1667 but I’m not sure if that’s the potentiometer or the PC board itself. . I found that if I pushed the 3.5mm
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2018-09-02 Mims Mistakes In Audio Amplifier
From FB group Building Transistor Radios, 2018-09-02 I already see one mistake. On p.27, Audio Mixer. The R6 is only 1k. The voltage divider R5 and R6 will give a voltage less than 0.6 at Q1’s base, which means Q1 will not be forward biased enough and the circuit won’t work or else sound distorted.
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2017-08-07 Low Quality Goods
From FB comment There are many factors that affect price. One part is getting things assembled by underpaid and child (illegal) labor. Most discounters have been caught buying their goods from these illegal sweatshops, and they still turn a blind eye to these abuses. The net result is that the quality of the components may
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