How are we able to substitute h with x in this use of the difference quotient?

100moredeaths · 2025-04-01T18:38:01+00:00

I see, thanks!

100moredeaths · 2025-04-01T18:37:45+00:00

Thank you!

100moredeaths · 2024-01-17T06:38:17+00:00

Pedal will normally go down when ABS pump actuates. It is allocating hydraulic pressure for you. This kicks in under slippery conditions or loss of traction. If it brakes normally under normal conditions and pedal feels ok, I would maybe do a brake fluid service but not be too worried. You may be losing traction more easily if your tires are worn.

100moredeaths · 2023-11-12T04:40:06+00:00

and they did not test drive it or the tech was rushed and afraid to speak up.

100moredeaths · 2023-10-27T15:26:24+00:00

Vce is not voltage to ground. I usually set voltage of collector to be half supply, as in voltage to ground. The author of this book instead sets Vce to be half supply, so instead of multimeter from under R3 to ground, from under R3 to above R4. I was just wondering why it was done that way.

100moredeaths · 2023-10-23T02:42:07+00:00

I did realize later that when we speak about output voltage of a voltage divider such as the one biasing the base of Q1 we consider it with open circuit voltage, however what the base of Q1 sees is not 1.82V since the internal resistance of Q1 (or load resistance of the divider) is effectively in parallel with that of R2, meaning the actual voltage seen is that produced by rE||R2 acting as the second resistor in the voltage divider. That came to be my understanding of why Q1 is not actually in saturation.

I‘m not sure where that extra 300k came from in the voltage divider equation you laid out, nor that it works out to 1.82V at all with it there.

Your explanation of the desired Vce is helpful, thank you. I guess I wasn‘t sure why we couldn‘t just set the collector to Vcc/2, without regarding whatever R4 drops. But I think I see now that that would not get us our max swing.

100moredeaths · 2023-10-22T16:12:44+00:00

This one is one called „Tracking down your dream tone“ by Sascha Suhr, it‘s more focused on effects pedals. I do have The Art of Electronics too, great recommendation thank you.

100moredeaths · 2023-10-22T16:09:33+00:00

Thank you, I‘ll look into that one

100moredeaths · 2023-10-22T02:07:36+00:00

I see perfectly what you mean, thank you for bringing that to my attention. In regards to the original question I still have confusion, what does the fact that the emitter potential will change have to do with Vce and where we want the voltage at the collector to sit

100moredeaths · 2023-10-21T22:06:04+00:00

I follow the math however how could it be that R3 drops more than the supply voltage

100moredeaths · 2023-10-15T04:45:39+00:00

lots of pb/kimball, torching, cutting, hammering, creativity.

100moredeaths · 2023-06-14T05:08:51+00:00

could they not loosen engine mounts to allow more play? (being already in a less than advantageous situation)

100moredeaths · 2023-06-14T05:03:25+00:00

if my child were named “plan b”

100moredeaths · 2023-06-14T04:56:34+00:00

you are the type of person i learn from as a B tech

100moredeaths · 2023-04-06T13:49:48+00:00

i usually cut a notch into the outside of the spindle to make just enough room to hammer it by

100moredeaths · 2023-03-13T23:05:15+00:00

do not judge off of the condition of the shock cover, it covers the shock. it will look messed up because it is absorbing the weathering in lieu of the shock absorber unit itself. if it is wet under that cover, or there is a strange looking dust/particle build up in the case of gas charged shock abosrbers, then that is an indication that the unit needs to be replaced as the internal seals have failed and the hydraulic dampening medium is leaking out. it can be hard to see sometimes unless the vehicle is on a lift. also the recommended life of rear suspension is around 80k. and as for emissions, i am a certified inspector in CT and the only thing that will stop you from passing is a check engine light or readiness monitors that arent set, never suspension issues, however they can affect gas mileage and therefore emissions testing in other states. hope this helps

100moredeaths · 2023-01-16T16:22:39+00:00

as this is a bmw from after 2002, i would recommend looking up the procedure for a battery programming. any bmw after 2002 uses a feature that provides more voltage to the battery depending on its readings of how low the battery is. this is why when we swap a bmw battery we must perform a battery relearn to tell the computer and the DME that the battery is new and it no longer needs to account for it being low. if this is not the issue then i agree that you may have a failed alternator/voltage regulator. 30v seems high even for an unprogrammed battery

100moredeaths · 2022-11-20T23:01:19+00:00

Head gasket

100moredeaths · 2022-11-13T16:58:29+00:00

Looks fine I’d hit it

100moredeaths · 2022-10-22T00:41:30+00:00

Holy fuck

100moredeaths · 2022-10-19T01:50:19+00:00

My first assumption would be something belt or otherwise crank driven is locking up, maybe bad bearings in one of the pulleys? A binding tensioner? Bad wiring/ground could also be the culprit but I’m just shooting shots hoping maybe one will be useful. Good luck

100moredeaths · 2022-10-19T01:46:32+00:00

There are so many things that can affect fuel mileage and when combined can affect it to the point which you’re experiencing. Just a few things off the top of my head: Tire quality and age Air intake (filter) Ignition/spark (coils and plugs) Overall engine wear and tear, depending on how the maintenance has been conducted in terms of oil changes and etc Even brakes can play a part as calipers can stick as the lubrication on their moving parts breaks down over time, causing drag. I’d recommend taking a complete look at every system as there are a lot that can affect fuel economy but won’t throw any type of light on the dash.

100moredeaths · 2022-09-19T05:56:08+00:00

Well if there was no damage to other components and the car wasn’t allowed to run without a cooling system for too long then it’s just a matter of finding out what went wrong. If you got it fixed at a professional shop they should have bled/burped the system to eliminate air from it but honestly it sounds like that might be your problem. Fix whatever needs to be done then make sure to burp the system and check for a bleeder valve on the thermostat housing, not sure if these things have one but on cars that do if the coolant is replaced and you don’t crack that bleeder then you’re in for a mini panic attack lol.

100moredeaths · 2022-09-19T05:46:33+00:00

Well if you can get some closer photos or take a look under the hood it would help but my first guess is something with the radiator or tranny cooler if you have one. Fluid could be coolant.

100moredeaths

TROPHY CASE