Activity for Andy aka
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Answer | — |
A: Transformer design for a Series Resonant Converter > The website that I mentioned before mentions the max flux density in ferrites at 400 kHz as being close to 0.04 T. Is this correct? No, you have misinterpreted the graph. The graph shown is flux density (not maximum flux density) and is only telling you one thing; that if you increase the frequ... (more) |
— | 4 months ago |
| Comment | Post #290448 |
The graph on the website you linked doesn't tell you anything other than current reduces in an inductor by a factor of ten when the frequency rises by a factor of ten. In other words it's useless padding by Magnetics to make their page look impressive. When current reduces by ten, flux density reduce... (more) |
— | 4 months ago |
| Comment | Post #290448 |
**I think this calculation is wrong. The website that I mentioned before mentions the max flux density in ferrites at 400 kHz as being close to 0.04 T. Is this correct?** That is not correct and neither do I see that being mentioned on the link to the magnetics website. Also, why are you using an LLC... (more) |
— | 4 months ago |
| Comment | Post #290284 |
Maybe your capacitors are acting microphonically and some (that are more microphonic) take longer to get a settled reading. It's a long shot but, it's all I could think of. I think it might also be related to the triboelectric effect. (more) |
— | 5 months ago |
| Comment | Post #290231 |
It's too broad. Any answers will become out of date. What the OP asks for may be country specific. It shows virtually no details of what the OP may have done already. (more) |
— | 6 months ago |
| Comment | Post #290047 |
Links within your link show how they work and should answer your question. Please explain what it is that you don't understand after working your way through those links. (more) |
— | 6 months ago |
| Edit | Post #289850 |
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— | 7 months ago |
| Edit | Post #289850 |
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— | 7 months ago |
| Edit | Post #289850 | Initial revision | — | 7 months ago |
| Answer | — |
A: What are some best practices for library management? There is no definite answer to this but, if you want my advice, you store all symbols and footprints locally with your project. Of course you may begin by using standard parts from a global (comes-with-the-installation) location that isn't under your control but, as soon as you can migrate the ones y... (more) |
— | 7 months ago |
| Comment | Post #289574 |
Please provide a link to the **pdf** data sheet for the supply (more) |
— | 8 months ago |
| Comment | Post #289570 |
What does this mean --> open the gate (more) |
— | 8 months ago |
| Comment | Post #287196 |
Tony, why would I want to do what you did? It's a formulaic solution I require and not numbers. (more) |
— | 8 months ago |
| Comment | Post #289473 |
A different way to mine and the other solved answer (in fact all 3 are different) but, I guess it's telling me that there is no insightful method to solve this. Thanks for your hard work. (more) |
— | 8 months ago |
| Comment | Post #276295 |
That's a bit of a bugger but, you can't always rely on external websites!!! (more) |
— | 9 months ago |
| Comment | Post #276200 |
Lorenzo, I just drew the pictures by hand in word or paint or both. (more) |
— | 9 months ago |
| Comment | Post #289186 |
Thanks. That's cleared it up. (more) |
— | 9 months ago |
| Comment | Post #289186 |
Are you saying that previous accumulated votes gained on meta have now been deducted? (more) |
— | 9 months ago |
| Edit | Post #289183 | Initial revision | — | 9 months ago |
| Question | — |
Apparent loss of reputation in last 24 hours Has anyone else noticed a loss of reputation recently. I thought I checked yesterday and my reputation was a hundred points higher at 1889. Now it is at 1789. My vote summary doesn't indicate a loss. I also reckon that Olin and Lundin have also suffered, particularly Lundin (if suffered is the right ... (more) |
— | 9 months ago |
| Comment | Post #288688 |
Low audio is not 5000 kHz; neither is it 5 kHz. 0 Hz is impossible too so, be reasonable on this vital specification. (more) |
— | 10 months ago |
| Comment | Post #288222 |
The block diagram is meaningless. The words that follow it appear to describe a circuit; don't do that; draw it. Where is the link to the product's data sheet or manual? (more) |
— | 11 months ago |
| Comment | Post #288159 |
How can you do an open circuit test of a motor or any device that acts as an electrical load. It doesn't make sense. (more) |
— | 11 months ago |
| Comment | Post #288153 |
Your upper picture of the phasors shows \$I_2\$ and \$I'_2\$ <-- they don't appear in the equivalent circuit shown below. Consistency is needed to give an answer. Neither do the loads (if I read the phasor diagrams correctly), match truly capacitive or truly inductive loads. The resistive load scenar... (more) |
— | 11 months ago |
| Edit | Post #288115 |
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— | 12 months ago |
| Edit | Post #288115 | Initial revision | — | 12 months ago |
| Answer | — |
A: Role of C2 (bypass capacitor) > Is C2 here to protect the voltage source from thermal noise? There's absolutely no chance that any level of thermal noise produced by a resistor will be sufficient to cause any reasonably designed power supply (voltage source) any problems whatsoever. Even badly designed power supplies will c... (more) |
— | 12 months ago |
| Edit | Post #288093 |
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— | 12 months ago |
| Edit | Post #288093 | Initial revision | — | 12 months ago |
| Answer | — |
A: DC offset correction loop (DC servo loop). What's its advantage, compared to a high-pass RC filter? > What are the advantages of such DC offset removal loop, compared to an RC high-pass filter? The primary advantage is that it keeps the front-end amplifier output centred in its DC operating region. If you used an external RC filter after the front-end amplifier and, sufficient offsets develop... (more) |
— | 12 months ago |
| Comment | Post #288027 |
A CDCS is an ideal component. A current mirror is a real circuit with real flaws and errors. (more) |
— | about 1 year ago |
| Edit | Post #287956 |
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— | about 1 year ago |
| Edit | Post #287956 |
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— | about 1 year ago |
| Edit | Post #287956 | Initial revision | — | about 1 year ago |
| Answer | — |
A: What does it mean for a signal to have impedance? > What does it mean for signals to have impedance? I expect that what it means is that a particular signal source has an effective series resistance (for a voltage source) or, an effective parallel resistance for a current source. Typically, a signal generator might have an output impedance ... (more) |
— | about 1 year ago |
| Comment | Post #287801 |
I'm not buying it. Anyone who gets deleted should have their questions closed to prevent further new answers or comments and thus benefit the original (but now deleted) user. If you want to keep them as records in the question list (as per other closed questions) then so be it but, closing is needed... (more) |
— | over 1 year ago |
| Comment | Post #287801 |
In "another place", when this happens, the question gets locked pretty immediately when a fake ID is reported. [This one](https://electronics.stackexchange.com/questions/651563/can-a-50mm2-cable-handle-350-amps) was locked within 20 minutes of the question being flagged. Olin, you have the ability to... (more) |
— | over 1 year ago |
| Edit | Post #287788 |
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— | over 1 year ago |
| Edit | Post #287788 |
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— | over 1 year ago |
| Edit | Post #287788 | Initial revision | — | over 1 year ago |
| Question | — |
Should a fake user's posts be deleted if the fake user has subsequently been deleted by the site The question below was raised by a "new user". The identity of the "new user" was deleted because it was found to be an alias of an already suspended user: - Image alt text So, why is the question still active? It's a fake user created by a suspended user!! Shouldn't the question be "locked"... (more) |
— | over 1 year ago |
| Comment | Post #287746 |
Draw a schematic of what you tried. How did you measure 350 amperes? This sort of current requires very specialized equipment and power supplies. Maybe you meant 350 mA? (more) |
— | over 1 year ago |
| Comment | Post #287728 |
That is NOT the circuit you posted initially. How can you expect decent help when you post half a circuit? What Olin said about your original circuit being a mess is very true. (more) |
— | over 1 year ago |
| Comment | Post #287726 |
Except for the very useful case of the flyback converter!! (more) |
— | over 1 year ago |
| Comment | Post #287678 |
The AD9850 module is eveywhere on google: https://www.google.com/search?q=ad9850&rlz=1C1ONGR_en-GBGB999GB999&oq=AD9850&aqs=chrome.0.0i512l10.1043j0j15&sourceid=chrome&ie=UTF-8 (more) |
— | over 1 year ago |
| Edit | Post #287628 | Initial revision | — | over 1 year ago |
| Answer | — |
A: How to check realistic specs of small solar panel? All good designs and design testing is based on information contained in the component data sheets. A solar panel is no different so, you need to establish the operating conditions for measuring voltage and current based on the information provided by the supplier of the product. It's quite likely... (more) |
— | over 1 year ago |
| Comment | Post #287532 |
There is no formula because what you expect to happen actually does not happen. (more) |
— | over 1 year ago |
| Edit | Post #287537 | Initial revision | — | over 1 year ago |
| Answer | — |
A: How to calculate the voltage of a coil? The magnetic field will always be strongest in the middle of the solenoid. It will be slightly less at the ends of the solenoid and, it will be a lower value on the outside of the coil half way between the ends of the solenoid. In other words, no amount of voltage present on the coil will change ... (more) |
— | over 1 year ago |