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Recent content by Alec_t

  1. Alec_t

    Magnetostriction.

    I don't have that experience, but others here will likely need to know how far you need to move the table, and in how many dimensions?
  2. Alec_t

    My controller outputs square waveforms in 5 volts PWM SIGNAL. I want to change the waveforms into current waveforms with some circuits.

    Any load resistance higher than 500 Ohms will need a higher supply voltage.
  3. Alec_t

    My controller outputs square waveforms in 5 volts PWM SIGNAL. I want to change the waveforms into current waveforms with some circuits.

    Welcome to maker.pro! Constant-current circuits are well-known. What are your different loads? What is the PWM frequency? Is your "10 milliampere square current waveform" one which goes from 10mA to 0mA, or from +10mA to -10mA?
  4. Alec_t

    Can HDR cameras be effectively used for macro photography?

    There's no good reason why not, with appropriate subjects. What macro subjects do you have in mind?
  5. Alec_t

    Op Amp Circuit Gain Does not Match LTSpice Simulation

    How were you measuring that? At only 8Hz, any AC-coupled instrument may be having difficulty in giving an accurate reading.
  6. Alec_t

    Solderable paint?

    @funyunbreath Did you check the age of this thread? The thread starter hasn't been here for >11 years!
  7. Alec_t

    Motor or solenoid

    I would definitely go with a linear system rather than your 'digital' version. Switching valves on and off quickly and repeatedly to get a chosen flow rate/quantity at a chosen temperature would be noisy and result in rapid valve wear.
  8. Alec_t

    help with IR2110 chips

    It's actually a tad more than 50cm circumference, because the magnet diameter is a chord rather than an arc.
  9. Alec_t

    Buffer to delay a signal

    Does your sim software allow for specifying the buffer delay amount?
  10. Alec_t

    Mystery component in motor speed controller

    +1 for diac. If that hasn't solved the problem there must be some other component faulty. The triac is the most likely culprit.
  11. Alec_t

    Recharging 7.2V 700mAh battery circuit

    Welcome to maker.pro. Is this a school/college project? Where did you get that incomplete schematic? What current and voltage control is it intended to provide?
  12. Alec_t

    help with IR2110 chips

    I agree. Those eddies would create additional minor modifications to the magnetic fields. Everything seems to interact.
  13. Alec_t

    help with IR2110 chips

    I think it does. If the coin is between the magnet and the coil surely it will experience the vector sum of the coil-generated field and the magnet's field? That sum is changing because the coil-generated field is changing. The change in the sum won't be much though, if the magnet's field is a...
  14. Alec_t

    help with IR2110 chips

    If you draw current from your coil, that will produce a changing magnetic flux through the coil. Since the penny would experience that flux change there would be eddy currents in it (albeit perhaps not significant in the grand scheme of things).
  15. Alec_t

    help with IR2110 chips

    In that case perhaps you could experiment with an air-cored coil for comparison?
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