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  1. (*steve*)

    Particles in a Field

    It's only been done that way for at least the last 40 years, and all you ever see are units so m is always metres not milli. If you want to confuse things I am happy to remove your posts.
  2. (*steve*)

    Particles in a Field

    Consider that the proton is under constant acceleration. This acceleration first reduces the velocity to zero then increases it in the other direction.
  3. (*steve*)

    Particles in a Field

    I know it's hard, but please try to use the same notation that chopnhack is required to use.
  4. (*steve*)

    Particles in a Field

    kg.m.s-2
  5. (*steve*)

    Particles in a Field

    And even an acceleration of 1ms-2 can't be sustained for too long.
  6. (*steve*)

    Particles in a Field

    Yes. But acceleration is not velocity. I could be continuously subject to that acceleration but never reach a significant velocity (I would be pulled apart into my constituent particles, but none of them might move very fast). It's the time that this acceleration applies which is the issue...
  7. (*steve*)

    Particles in a Field

    Yes. (I read that as misinterpreted) An acceleration is not a velocity. So what is an equation with 2 velocities, acceleration, and time?
  8. (*steve*)

    Particles in a Field

    Yep, then what is the acceleration? (I want to see working)
  9. (*steve*)

    Simple LED circuit burning out

    Apart from electrical tape being a crap product to insulate wires (and that's mostly in the long term) I can't see why the LED fails when it goes into the wood.
  10. (*steve*)

    Particles in a Field

    Correct. The field strength is in Newtons per coulomb. But what do you need to multiply this by to get the force? Then what is the acceleration? Then I would solve for time the simple Newtonian equation involving initial and final velocity, acceleration, and time. Where is the particle now...
  11. (*steve*)

    Amplify signal from piezoeletric

    The first one is just a non-inverting buffer. What comes out is the same as what goes in. The difference is there limiter at the input. The resistor limits the current (which again, is probably only needed if you accidentally connect the input to something inappropriate life a battery) and...
  12. (*steve*)

    help please

    I have no idea. Maybe you need a combination of earplugs and over the ear heating protection. Maybe just one is sufficient. Maybe it's not even safe with heating protection to be in the same room. It all depends on the SPL.
  13. (*steve*)

    Hantek scope keeps ticking and wont turn on.

    The 400V capacitor is rarely the problem. Look at the output caps. Leaky, swollen, high ESR?
  14. (*steve*)

    Multitasking with Arduino

    Are you bit banging your pwm?
  15. (*steve*)

    (Open for advices) using the nrf52832 module MDBT42Q

    Have you googled "St link V2 Arduino"?
  16. (*steve*)

    Hopefully this has a simple answer. Concerning grounding Boost converters.

    I think the answer is "yes".
  17. (*steve*)

    Particles in a Field

    They can't, but using those equations they can. If you start getting into higher velocities you need to use more complex equations. But equally, you're not going to be given problems that get you into that sort of problem.
  18. (*steve*)

    Hantek scope keeps ticking and wont turn on.

    No, but you can always create a resource. Go ahead, it sounds useful.
  19. (*steve*)

    tip120 driving led array

    If the circuit requires 2.4A then I would be looking for a power supply capable of at least 3A (maybe more if it will be on continuously).
  20. (*steve*)

    tip120 driving led array

    Yes, you need some resistance between the signal source and the supply rail the emitter is connected to. In your initial configuration with the load connected between the emitter and ground (of an NPN transistor), the load itself is that resistance. However this results in the transistor not...
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