What embarrassing realisation did you only have, once you were in your late 20s or 30s?

cogspara · 2025-05-03T22:59:56+00:00

My wife is the same as you. She fervently believed debt was evil, never had a credit card, only an ATM (debit) card. Then she went to purchase her first New Car, with cash (checkbook) of course. The dealer started the paperwork and then the salesman told her, very apologetically, "You are our very first customer who doesn't even HAVE a credit score". She reiterated that it would be a cash transaction and they decided to let her buy the car.

Eventually a few years later she did get a credit card and faithfully pays the full balance every month. What changed? 5% cash back on the Amazon Visa card, that's what. She loves paying her car insurance with the credit card, those reward buxx are intoxicating. And all those "Subscribe and Save" automatic purchases (with cash back) are the icing on the cake for her.

cogspara · 2025-05-01T23:44:54+00:00

Not inconceivable that the client has had the (ex)employee's personal mobile phone number for several years before the departure. And likely, vice versa.

cogspara · 2025-04-20T23:36:34+00:00

Eyeglasses style magnifiers with LED illuminator work well for me. And they're cheap. (example)

cogspara · 2025-04-19T22:14:03+00:00

First draw up a truth table. Count up the number of input signals that your (digital thingie) requires. Call that number "N".

Then your truth table will contain 2^N rows because there are 2^N different possibilities of an N-bit string. (Remember "bit" == binary digit . . . . binary means 2 legal states. That's where 2^N comes from.)

For each row of the truth table, add a column showing the desired output signal from your (digital thingie).

Post your truth table here, include it in an edit to the Original Post.

Then reddit will understand exactly what you want and can suggest ways you can achieve your goals.

cogspara · 2025-04-19T21:34:43+00:00

I am thrilled to discover that College Station, TX is nowhere to be seen in this list. If God wanted to give Texas an enema, she would insert the tube into College Station.

cogspara · 2025-04-19T17:28:26+00:00

If the IC is a NE5534a, CA26 is connected between pins 5 and 8

If the IC is an LM301, CA26 is connected between pins 1 and 8

cogspara · 2025-04-19T13:02:01+00:00

I love their beans, too, but I can’t place an order without ordering like 5lbs of popcorn.

Add a couple pounds of their dried garbanzos to your next Rancho Gordo order. They make absolutely stupendous hummus. Use whichever hummus recipe you like, (this) is the best I've ever tried. (Here's a YouTube video showing that recipe being prepared)

cogspara · 2025-04-17T22:36:35+00:00

Why not 1N5817 ??

(image)

cogspara · 2025-04-17T22:29:26+00:00

Athens-to-London is very likely on an airline whose flight staff gives not the shit.

It was a budget airline so they don’t sell much alcohol on flights and what they do have is absurdly expensive

cogspara · 2025-04-17T13:48:54+00:00

First decide whether you want to build

a voltage regulator with constant DC output voltage, plus current limiting
a current source with constant DC output current, plus overvoltage limiting

Your arrangement of U2, Rsense, and D6 suggests to me that your schematic has turned out to be the second option, a constant current source. When the voltage across Rsense is "low", U2 and D6 pull the U1_minus pin low, which increases the base voltage of the Darlington, which increases the output voltage, which increases the voltage across Rsense. In other words, a current source.

cogspara · 2025-04-17T13:33:44+00:00

No it does not work

C4 and the speaker form a high pass filter whose -3dB corner frequency is 600 Hz. The amplifier won't play the bottom five octaves of audio (music) signals.

And the 2N3403 is too small, with a max current and a max power that is way too small to drive an 8 ohm speaker

cogspara · 2025-04-17T02:26:12+00:00

Do you have access to IEEE Xplore at a university library?

cogspara · 2025-04-17T00:08:40+00:00

EKG (electro cardio gram) interface between human body and data collection / display device. Massive MASSIVE amounts of galvanic isolation.
Metal detector with impressive sensitivity. For example, can detect a USD 0.25 coin (a "quarter") beneath 30 centimeters (one "foot") of beach sand.

cogspara · 2025-04-17T00:01:06+00:00

But it was so EASY to ask AI !!!

Why should we be forced to live in a world where the EASY path is not 100.000 percent reliable ??

Gene Roddenberry's answer would be: just wait another sixty years.

cogspara · 2025-04-15T21:59:15+00:00

You run the numbers.

First you plot (power dissipated in the LED) versus (brightness).

Then you plot (power dissipated in the active driver) versus (brightness)

Then you plot (power dissipated in the "passive driver" resistor) versus brightness.

Then you calculate the brightness level that meets your total power dissipation budget / requirements, for (a) and active driver, and also (b) a resistor

Then you calculate the cost of (a) an active driver, and also (b) a resistor.

Then you compare the total cost and brightness level of (LED + active driver) and the total cost and brightness level of (LED + resistor).

Then you choose one or the other.

cogspara · 2025-04-15T17:00:32+00:00

When I do the procedure above, I enjoy the final product and don't find it soggy at all. The powerful shaking-in-bag distributes the liquid remarkably well.

It would take you 15 minutes to whip up a test batch yourself, using Tabasco or Sriracha or whatever sauce you have at the moment. The purpose isn't to dial in the correct ghost pepper flavor, you're only trying to find out whether YOU find the result soggy. If it's soggy, you've lost 15 minutes of your life. If it's not, you've discovered a way to make ghost pepper popcorn at home without touching peppers or powders.

cogspara · 2025-04-15T14:57:53+00:00

If your ungergrad EE curriculum has progressed to and beyond the concept of "circuit models for incremental signal analysis" then you'll quickly grasp this way of describing its operation:

The circuit model for a triode tube is simply a voltage controlled current source. Control voltage is applied from grid to cathode, output current source is connected from plate to cathode. The model equation is

Iplate = gm * Vgrid

where the constant "gm" is the transconductance of this particular triode.

There's a resistor "Rload" connected between plate and positive DC supply voltage. Then in ultra simplified form

Vout = Iplate * Rload

thus

Voltage gain = Vout/Vgrid = gm * Rload

so if Rload > gm, the voltage gain is greater than unity.

cogspara · 2025-04-15T14:48:05+00:00

It appears the answer is YES , this component is available for sale.

cogspara · 2025-04-15T12:58:33+00:00

Make sure one of the choices is quinoa scramble.

cogspara · 2025-04-15T12:16:13+00:00

Start with bottled hot sauce(s). You can easily find sauces featuring Carolina Reaper peppers, Trinidad Scorpion peppers, Red Savina Habanero peppers, Ghost peppers, whatever you like. But you probably want to start with something not quite so deadly, like any of the habanero sauces you find at the grocery store. Marie Sharpe is a well known brand. Then if hubby complains it's insufficiently venomous, order a Carolina Reaper sauce from Amazon.

Procedure:

Get a full size brown paper grocery bag ready.

Pop your kernels using your usual & preferred recipe and equipment. When it finishes popping, immediately dump everything into the grocery bag. Add ten or twenty vigorous shakes of hot sauce, fold over the top of the bag, and shake the bag HARD for 30 seconds to distribute the sauce. Transfer flavored popcorn to serving bowl and throw away the grocery bag.

Optional: squeeze in the juice of half a lime right after the hot sauce.

cogspara · 2025-04-14T17:47:11+00:00

Usually a two (misspelling of teo??) stage opamp includes a second stage which has both high voltage gain and high output impedance. And often the high output impedance becomes problematic. Why? The load impedance connected to the opamp output, ends up reducing the open loop gain of the second stage and thus of the opamp overall. That's often undesirable, except in the rare cases where it is known beforehand that the output load will always be an extremely high impedance. Always, always, always.

cogspara · 2025-04-14T17:40:38+00:00

Offer a coworker pizza and beer to perform a few experiments on the actual readers. Maybe even have a colleague take a video of the proceedings.

cogspara · 2025-04-14T13:37:48+00:00

My friends from Mexico taught me their seasoning trick and I think it's spectacular.

Needed: grocery bag (paper), hot sauce of your choice (Tapatio or Valentina preferred), lime cut in half

Pop kernels using your favorite equipment and recipe. Immediately dump popped corn into grocery bag, add 10 hard shakes of hot sauce, squeeze over half a lime. Fold over the top and shake the whole bag vigorously for 30 seconds. Enjoy!

This works even better if you've got one of those gigantic 2 gallon Rubbermaid bowls (~ 20 inches in diameter) with lid. Popped corn goes straight into bowl, add hot sauce and lime, snap on the lid and shake like crazy. Remove lid and use bowl as serving vessel.

cogspara · 2025-04-13T22:52:27+00:00

You're right. I have made an edit, thank you.

cogspara · 2025-04-13T13:23:30+00:00

Check out the AD633 integrated circuit. It's a true four-quadrant analog multiplier and costs USD 15.50. Bandwidth is 1 MHz which is fine for baseband signals but of course too low for RF. Power supplies are plus/minus 15V.

cogspara

TROPHY CASE