berkeman's latest activity
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berkeman reacted to Jaziel's post in the thread High School Lunar Orbit Issues & Lunar Clocks with
Like.
PS. Good news! I've just contacted the supplier and they confirm that the clock is definitely at fault and that they're perfectly happy... -
South Carolina nuclear test? :oldtongue:
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berkeman reacted to ojitojuntos's post in the thread Undergrad Question about discussions around quantum interpretations with Like.
Thank you! Now, these past weeks I’ve tried to take some time off work to read a bit, but in afraid that I’m far from being able to...
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berkeman replied to the thread Should The Lounge Content Be Excluded from Trending?.I think this is the key point here. We are asking the Xenforo developers to give us more control over which threads are featured at the...
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Any SPICE will do with that code, but LTspice, now from ADI, is probably the best at the moment, and is free. Also, subscribe to...
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Looks like I am going to have to get LT Spice downloaded.
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Employing my usual infallible social radar I'm sure this is the right place for one my disjointed anecdotes: At the age of ~10 I got...
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Here is an LTspice model for the uA/LM709. At the end it defines the transistors used as all having the same specifications. * LM709...
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berkeman replied to the thread I thought it was only Amazon that sold unsafe junk.Yes, we call them "suicide cords" or "widowmakers" because they don't obey safe practices of keeping AC Mains live wire connections...
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berkeman replied to the thread I thought it was only Amazon that sold unsafe junk.Wow, that's not good. Are there any certification markings on the box or the cord? Anything like UL or similar?
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berkeman reacted to Averagesupernova's post in the thread I thought it was only Amazon that sold unsafe junk with
Wow.
I grabbed an under cabinet LED light today at a big box store. Nothing special. 18 inches in length and made to plug several lights... -
berkeman replied to the thread General principle of turbomachinery: true also for rocket turbopumps?.Using AI as a technical reference at PF is not allowed. Thread is done.
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berkeman reacted to Dale's post in the thread Undergrad Reference frames, center of rotation, etc with Like.
Excellent, except that you will want those as vectors, not just the magnitudes. So for the rotating $$v_l(t)=(-\omega l \sin(\omega...
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berkeman replied to the thread Distance between a Clock's hands when the distance is increasing most rapidly.@haruspex -- minute hand or hour hand as stationary?
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berkeman replied to the thread uA709 op amp compensation.So you have the opamp schematic entered into SPICE and are looking for the transistor model data?
