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  1. Alec_t

    Driving a ring of LEDs in strobe mode

    If LED current is 13mA and each LED is lit for only 0.1ms I don't think they will appear very bright.
  2. Alec_t

    rotate encoder volume problem

    Nope. :)
  3. Alec_t

    rotate encoder volume problem

    Can't you make a new spring from some suitable springy material?
  4. Alec_t

    rotate encoder volume problem

    Welcome to maker.pro. Clearly the replacement encoder is not an exact match for the original, so perhaps the pinout is different?
  5. Alec_t

    Oscilloscope always showing Sine Wave

    Does pressing the 'Waveform generator' key remove/affect the sine display?
  6. Alec_t

    Resetting Latching Relay with Momentary Button

    What type of latching relay? One with two coils (one for Set and the other for Reset) or one with a single coil (energised with one polarity current for Set and the opposite polarity for Reset)?
  7. Alec_t

    Ignition for moped

    Which FET are you using (I can't read the text on your schematic)? If it's not a logic-level type you will have problems.
  8. Alec_t

    E-Bike front light Power supply question

    The light you have clearly isn't in accordance with its advertised ratings. That is contrary to Consumer Law in Europe and the UK (at least).
  9. Alec_t

    making two half bridges a "whole" h-bridge ir2103 and 55v bidirectional current

    As a side issue, why do you have all the coils commoned as shown in the schematic? That bottom left diode could get overloaded if energised by more than one coil at a time.
  10. Alec_t

    Is it possible to build an homemade mobile signal amplifier?

    Good luck finding one. But did you read the legality warning in post #3 ? Illegal acts are contrary to the site's Terms & Conditions which you signed up to.
  11. Alec_t

    Google plans to scrape everything you post online to train its AI

    I recall the Daleks shouting something similar.:) But perhaps mankind will be exterminated, if AI ever gets control of critical infrastructure systems or weapons.
  12. Alec_t

    is it possible to build wireless tags

    Whatever a 'wireless tag' actually is, it will almost certainly be a lot cheaper to buy one than to pay for components and build one.
  13. Alec_t

    small transmitters

    If you make it, how will you ensure it complies with legal requirements?
  14. Alec_t

    I want to make a speed limiter for my motorcycle

    Do you have a schematic for your CDI ignition module? Have you checked with your insurer that your proposed modification won't invalidae your insurance cover?
  15. Alec_t

    Need help about switch power supply circuit

    What is the transformer core material? Are you sure the coil phase relationship is correct, to ensure oscillation? Are you aware the secondary is not mains-isolated, so there is a shock risk?
  16. Alec_t

    problem with 48vdc motor destroys relay

    Is it the relay coil that fails or the relay contacts?
  17. Alec_t

    Mini Quadcopter As a web camera or FPV

    There's nothing in the manual in the post #4 link to suggest that camera images can be sent any where except to the SD card.
  18. Alec_t

    DC 12 V to AC 220 V

    The circuit is a classic "Royer oscillator". Since its operation is very dependent on the saturation characteristics of the transformer core, I'd be surprised if you could find a simple equation for calculating oscillation frequency.
  19. Alec_t

    DC 12 V to AC 220 V

    Harald, L1 and L2 would be coupled, since they are the original secondaries on a re-purposed back-to-front mains transformer.
  20. Alec_t

    I have question marks about my power supply circuit anyone can help?

    I was wondering about that.
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